-------
APPENDIX D

-------
City
90
91
89
150
93
109
40
20
74
120*
152
61
41
199
64
11*
32
8
121
142*
1
130
174
162
86
100
295
71
147
308
168
175
105*
101
111
217
62
73
122
139*
159
165
Sample
Size
206
195
117
81
78
72
70
62
59
54
51
46
41
41
30
23
22
19
IB
17
16
16
13
12
10
9
9
8
8
8
7
7
5
5
5
5
4
4
4
4
4
4
q
0.717917
0.677301
1.625189
0.209461
0.553427
1.341256
1.874561
1.301950
0.256774
00
1.102640
0.112547
0.441110
1.953953
00
0.880435
2.707007
0.570479
00
00
2.038864
1.355463
5.520679
2.272272
0.254426
376.89806
1.446761
0.294975
2.346651
OB
0.914368
0.621825
00
1.653133
OB
3.696419
2.932655
00
0.281353
00
50.514247
OB
m
9.527345
10.028699
10.619969
11.264430
278.938986
6.579215
7.781179
5.592729
46.231592
1.500000
19.489594
6.507630
13.936982
7.351698
4.833013
13.500000
4.302894
17.162917
3.519917
10.000000
15.809209
10.995573
40.699701
12.213228
1.811588
38.499536
6.684823
5.006120
17.580409
15.999823
10.568594
10.508781
102.000000
198.003206
1.633307
6.163064
30.968027
0.326039
117.737349
0.000000
21.498798
46.979735
£
0.874538
0.8487S1
0.760072
0.304341
0.749330
0.693713
0.477132
0.758171
0
0.962963
0.510031
0
0.628038
0.821713
0.800007
0.913043
0.849712
0.381082
0.885147
0.941176
0.557102
0.543141
0.626873
0.577371
0
0.775875
0.765451
0.358253
0.251390
0.874989
0.420023
0.487783
0.800000
0.402287
0.752298
0.383741
0.510882
0.222424
0.488077
1.000000
0.515855
0.750057
Note: * denotes starting values for these parameters. Nonlinear algorithm
failed to detect any optimum parameter estimates away from the starting
values.

-------
APPENDIX E

-------
ACTUAL CITY 109 GIARDIA OBSERVATIONS
(N=72)
1.0 -i
W
W
o
o
0.8 -
0 0.6 -

-------
APPENDIX F

-------
SIMULATION BASED ON THE DELTA-NEGATIVE BINOMIAL. MODEL
PARAMETERS FOR CITY 109 (N=10,000)
w
w
OS
o
fa
1.0 n
0.8 -
PQ
m 0.4
o
PS
a,
a
w
0.2 -
0.0
•M'f f-f-f-T-T-TT-T-T-TT-TT
T
o i z :i 4 s «
10 II 12 IJ 14 Ifi IB IT IB I!) <»

-------
APPENDIX 6

-------
Application of a Binomial Removal Process to a
Delta-Negative Binomial Distribution
Let X - number of cysts in raw water
and K - number of cysts in finished water.
For k-0 and x-0, Pr(K-0)-6.
For k>0 and xX> (x£k) :
.TUN* -.I-,, £ ^.^-.^.a-p,".^^^)'.^
Lee J - x-k
P* J a\'J a \4f* l.(1-
flXfl) A g*«j \^«) js '
V-flL\*» r^^ [l-f {1-P^|rtri> (see note
lo>*/ *t»r

-------
APPENDIX H

-------
ESTIMATION OF r IN EXPONENTIAL DOSE-RESPONSE FUNCTION 14:32 Thursday, February 20, 1992
BASED ON HUNAN INFECT1VITT STUDY AS CITED IN ROSE ARTICLE
Method: Gauss-Newton
Non-Linear Least Squares Iterative
Iter
0
1
2
3
4
5
6
7
8
9
10
11
12
13
Phase Dependent variable RESP
R Sum
0
0.0000014043
0.00000434*0
0.0000110043
0.0000259919
0.0000837003
0.000190
0.000343
0.001451
0.012521
0.017625
0.017917
0.017907
0.017907
of Squares
21.000000
16.593611
14.226365
12.735403
11.781231
10.500940
.928268
.755801
.036939
.940740
.729831
.729345
.729345
.729345
NOTE: Convergence criterion net.
Non-Linear Least Squares Suwasry Statistics Dependent Variable RESP
Source DF SIM of Squares Mean Square
Regression
Residual
Unconnected Total
1 15.270655199
39 5.729344801
40 21.000000000
15.270655199
0.146906277
(Corrected Total) 39 9.975000000
Parameter Estimate
Asysptotfc Asysptotfc 95 X
Std. Error confidence interval
Lower Upper
0.0179074539 0.00502972826 0.00773391748 0.02808099039
Asymptotic Correlation Matrix
Corr R
R 1

-------
APPENDIX I

-------
Variance of the Exponential Dose-Response Function where Dose (K)
Ha* a Delta-Negative Binomial Distribution (continued)
Now, E(X2) - E(XZ) - [E(X)]Z
So'EiX*) - (1-*)
1 -
- (I-*)1
2 r*
m-p) •(!-«•'•»;
-( 2 rf
lo>«m.p)« J J
, „ / «. \t „ .., / <(fli«p>»(l-e-**}); )

-------
Expected Value of the Exponential Dose-Response Function Where
Dose (K) Has a Delta-Negative Binomial Distribution
-e<-*-»] [8-1 „(*) +(i-6)
I
-8.(l-exp(0)) * VHi-e <-'••*'] (1-8)
(1 expiujj tl • j i o>
g \»
(1-8) - (1-8) •
-8) -
o;
«7*(in»p}
(!-*) - (1-8) •(
\
(1-«4-[ - 2 -
I [gMfli-PMl-e -'*))
• (1-8) - (1-8) •( 3—p\TC JT/yJj! •fffl'p.'e'i.
From Jolley, 1961, formula 1015:
^ ^ MM-L^^^»*I •••^^•^WB J » 1 *^*|
2!
_f gi>p»e -*')'. f ar*(in»p) -

-------
Variance of Che Exponential Dose-Response Function where Dose (K)
Has a Delta-Negative Binomial Distribution
(from derivation of the expected value of the exponential dose-xesponse function)
(l-8)-2«(l-«)«f - 2 - )%{!-«) 4 - 2 - ._]'
\

-------
APPENDIX J

-------
exdr = 11
-a,U
I L
<7+

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-60
WITHOUT ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 252
SOX
OX
90th Xile 25X
50Z
OX
99th Xile 25X
SOX
Removal is Reduced bv 1*
OX
124
16S
248
245
326
490
1,098
1,464
2,196
5X 10X
180 235
239 313
359 470
355 464
473 619
709 928
1,586 2,070
2,115 2,760
3,172 4,139
Percentage of Time Log
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 2SX
SOX
Removal is Reduced bv 1*
OX
00
00
GO
00
1.17xl09
32.S68
0.007
0.004
0.003
5X 10X
00 00
oo 13.4xl09
502,984 84.384
70.6x10* 697.352
212.089 0.700
0.098 0.014
0.004 0.003
0.003 0.003
0.003 0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-50
WITHOUT ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
SOZ
Secondary
Infection
Rate
OZ
Mean 25Z
SOZ
OZ
90th Zile 2SZ
SOZ
OZ
99th Zile 25Z
SOZ
Removal is Reduced
OZ 5Z
129 187
172 250
259 375
312 451
416 602
623 903
1,098 1,586
1,464 2,115
2,196 3,172
Percentage of Time
Removal is Reduced
OZ SZ
0 OD
CO 00
24.7xl012 94,107
249x10' 1,754
13,775 1.091
0.442 0.016
0.007 0.004
0.004 0.003
0.003 0.003
bv 1*
10Z
245
327
491
591
788
1,181
2,070
2,760
4,139
Log
bv 1*
10Z
00
1.02x10'
30.900
1.910
0.043
0.006
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-40
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25Z
SOZ
OZ
90th Zile 2SZ
SOZ
OZ
99th Zile 25Z
SOZ
Removal
OZ
139
186
278
322
429
644
1,098
1,464
2,196
is Reduced
SZ
202
269
404
466
621
932
1,586
2,115
3,172
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 2SZ
SOZ
OZ
90th Zile 2SZ
SOZ
OZ
99th Zile 2SZ
SOZ
Removal
OZ
00
00
224x10'
is Reduced
SZ
GO
00
6,746
27.1x10' 616.588
4,392
0.290
0.007
0.004
0.003
0.658
0.014
0.004
0.003
0.003
bv 1*
10Z
264
352
529
610
813
1,220
2,070
2,760
4,139
Log
bv 1*
10Z
oo
17.7xl06
6.498
1.089
0.033
0.005
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-30
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25Z
SOZ
OZ
90th Zile 2SZ
50Z
OZ
99th Zile 25Z
SOZ
Removal
OZ
163
217
326
355
474
710
1,098
1,464
2,196
is Reduced bv 1*
5Z 10Z
236 309
315 412
472 618
514 673
686 897
1,029 1,346
1,586 2,070
2,115 2,760
3,172 4,139
Percentage of Time Log
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
SOZ
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 25Z
SOZ
Removal
OZ
is Reduced bv 1*
52 10Z
co to 457x10'
« 10.8x10' 18,872
38.9x10*
64.5xl06
202. 563
0.096
0.007
0.004
0.003
77.375 0.496
37.963 0.249
0.174 0.017
0.009 0.004
0.004 0.003
0.003 0.003
0.003 0.003
*Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-20
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25X
50Z
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal
OX
203
271
406
420
561
841 1
1,642 2
2,189 3
3,284 4
is Reduced bv 1*
5X 10X
294 38S
392 514
588 770
609 796
812 1,062
,217 1,593
,367 3,082
,155 4,110
,733 6,165
Percentage of Time Log
Average Number
of Years for
an Outbreak
Secondary
J
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Removal
OX
« 12.
is Reduced bv 1*
5X 10X
3xl012 1.02xl06
« 130,966 25.222
5,548
23,236
3.861
0.024
0.003
0.003
0.003
1.018 0.046
1.127 0.041
0.034 0.008
0.005 0.004
0.003 0.003
0.003 0.003
0.003 0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
-10
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal is Reduced bv 1*
OX
255
339
509
548
731
1,096
3,736
4,982
7,473
5X
369
492
738
793
1,057
1,586
5,344
7,126
10,689
Percentage of Time
Removal is Reduced
OX
00
127x10*
13.848
8.591
0.086
0.007
0.003
0.003
0.003
5X
8.69x10*
73.707
0.067
0.-043
0.008
0.004
0.003
0.003
0.003
10X
483
644
966
1,037
1,383
2,074
6,909
9,212
13,818
Log
bv 1*
10X
212.187
0.394
0.011
0.009
0.004
0.003
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-60
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal
OX
0.129
0.172
0.258
0.342
0.455
0.683
0.702
0.936
1.404
is Reduced
5X
0.187
0.249
0.374
0.495
0.660
0.991
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
OX
00
00
00
GO
09
00
OB
00
CD
5X
09
00
00
00
00
00
00
00
00
by 1*
10X
0.245
0.327
0.490
0.649
0.865
1.298
1.334
1.779
2.668
Log
by 1*
10X
00
00
00
00
00
OB
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-50
WITHOUT ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25Z
50Z
OX
90th %ile 25Z
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OZ
90th Zile 25Z
SOX
OX
99th Xile 25X
SOX
Removal
OZ
0.134
0.179
0.268
0.346
0.461
0.692
0.702
0.936
1.404
is Reduced
SZ
0.195
0.259
0.389
0.502
0.669
1.003
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
•
OX
00
00
00
00
CD
OB
00
OP
00
5X
00
00
00
00
00
00
00
00
00
by 1*
10Z
0.255
0.340
0.510
0.657
0.877
1.315
1.334
1.779
2.668
Log
by 1*
10Z
00
00
00
00
00
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-AO
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
02
Mean 25X
SOX
02
90th Xile 25Z
50Z
01
99th Xile 25Z
502
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
Removal is
OX
0.141 0.
0.188 0.
0.282 0.
0.346 0.
0.461 0.
0.692 1.
0.702 1.
0.936 1.
1.404 2.
Percentage
Removal is
OX
00
00
00
00
00
09
CO
00
oo
Reduced
5X
205
273
410
502
669
003
018
358
036
of Time
Reduced
5X
00
00
00
00
00
00
m
00
00
bv 1*
10X
0.268
0.358
0.537
0.657
0.877
1.315
1.334
1.779
2.668
Log
by 1*
10X
00
00
CD
CO
to
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-30
WITHOUT ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 252
SOX
OX
90th %ile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 2SX
SOX
Removal
OX
0.162
0.216
0.324
0.372
0.496
0.745
0.702
0.936
1.404
is Reduced
5X
0.235
0.313
0.470
0.540
0.720
1.080
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
OX
09
09
00
oo
as
00
00
00
00
5X
a
00
00
09
09
09
09
09
09
by 1*
10X
0.308
0.410
0.615
0.707
0.943
1.415
1.334
1.779
2.668
Log
by 1*
10X
03
00
00
to
CO
00
CD
03
'03
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-20
WITHOUT ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Removal
OX
0.164
0.218
0.328
0.355
0.473
0.710
0.702
0.936
1.404
is Reduced
5X
0.238
0.317
0.475
0.514
0.686
1.029
1.018
1.358
2.036
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal
OX
CO
00
00
00
00
OB
00
00
00
is Reduced
5X
00
00
OB
CD
00
00
OB
00
00
by 1*
10X
0.311
0.415
0.622
0.674
0.899
1.348
1.334
1.779
2.668
Log
by 1*
10X
CO
00
00
00
a
00
00
00
CD
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-10
WITHOUT ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
50Z
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
50Z
OZ
99th Xile 25Z
50Z
Removal is Reduced
OZ 5Z
0.164 0.237
0.218 0.317
0.327 0.475
0.356 0.517
0.475 0.689
0.712 1.033
0.710 1.029
0.946 1.372
1.419 2.058
Percentage of Time
Removal is Reduced
OZ 5Z
00 CO
00 00
00 00
00 -00
00 OD
OD OD
GO 00
OB 00
00 00
by 1*
10Z
0.311
0.415
0.622
0.677
0.902
1.354
1.348
1.797
2.696
Log
by 1,*
10Z
CO
OB
CO
OB
00
00
OD
CD
OB
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-60
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Secondary
Removal is Reduced bv 1*
Infection
Rate
Average Number
of Cases per Mean
10,000 per Year
90th Xile
99th Xile
OX
25X
SOX
OX
25X
SOX
OX
25X
SOX
OX
107
143
214
224
299
449
793
1,058
1,587
5X
155
207
310
325
434
650
1,147
1,529
2,294
10X
203
271
406
426
568
851
1,499
1,998
2,997
Average Number
of Years for
an Outbreak
Mean
Secondary
Infection
Rate
OX
25X
SOX
Percentage of Time Log
Removal is Reduced bv 1*
OX
OD
GO
5X
00
448xl06
10X
00
5,380
90th Xile
OX
25X
SOX
287xl09
280.611
13.6xlO»
3,089
0.2S6
14,402
3.052
0.022
99th Xile
OX
25X
SOX
0.043
0.008
0.004
0.006
0.004
0.003
0.004
0.003
0.003
*Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-50
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases' per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal is Reduced
OX 5X
120 173
159 231
239 346
297 430
396 574
594 861
793 1,147
1,058 1,529
1,587 2,294
Percentage of Time
Removal is Reduced
OX 5X
GO 00
00 00
» 2.27xl06
8.23x10" 9,557
86,925 2.496
0.873 0.021
0.043 0.006
0.008 0.004
0.004 0.003
bv 1*
10X
227
303
454
563
751
1,127
1,499
1,998
2,997
Log
by 1*
10X
00
137x10'
209.821
4.796
0.066
0.007
0.004
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-40
WITH ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Elate
OX
Mean 25Z
SOZ
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
SOZ
Removal
OZ
142
190
284
322
429
644
1.101
1.468
2,202
is Reduced
5Z
206
275
412
466
621
932
1.590
2.120
3,180
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 25Z
SOZ
Removal
OZ
00
is Reduced
5Z
CD
c» 24.7x10"
61.5xl09
3,422
27.1x10' 616.588
4,392
0.291
0.007
0.004
0.003
0.658
0.014
0.004
0.003
0.003
bv 1*
10Z
270
360
540
610
813
1,220
2.075
2.767
4,150
Log
bv 1*
10Z
00
6.26x10*
4.369
1.089
0.033
0.005
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
S¥TR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-30
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal is Reduced bv 1*
OX
163
218
326
355
474
710
1,101
1,468
2.202
5X
237
315
473
514
686
1,029
1,590
2,120
3,180
Percentage of Time
Removal is Reduced
OX
OD
CD 9
34.7x10*
64.5x10'
202.563
0.096
0.007
0.004
0.003
SX
CO
.26x10'
72.955
37.927
0.174
0.009
0.004
0.003
0.003
10X
310
413
619
673
897
1,346
2,075
2,767
4.150
Log
bv 1*
10X
386xlO»
17,249
0.480
0.249
0.017
0.004
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-20
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal
OX
208
277
415
463
617
925
1,642
2,189
3,284
is Reduced
SX
301
401
601
669
893
1,339
2,367
3.155
4,733
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Removal
OX
oo 3
24.7x10"
2,730
785.963
0.740
0.014
0.003
0.003
0.003
is Reduced
5X
.53x10"
53,577
0.730
0.268
0.018
0.005
0.003
0.003
0.003
by 1*
10X
394
525
787
876
1,168
1,752
3,082
4,110
6,165
Log
by 1*
10X
368,842
15.173
0.039
0.021
0.006
0.003
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-10
WITH ALTERNATE DISINFECTION
JANUARY 2. 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 2 52
SOX
OX
90th Xile 25X
50Z
OX
99th Xile 25X
SOX
Removal is Reduced bv 1*
OX
290
386
580
593
790
1,186
4,405
5,873
8,810
5X
420
560
840
858
1,144
1,715
6,285
8,380
12,571
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SZ
SOX
OX
99th Xile 25X
SOX
Removal is Reduced
OX
24.7xl012
244,127
1.284
1.795
0.042
0.006
0.003
0.003
0.003
5X
24.844
3.991
0.025
0:024
0.006
0.003
0.003
0.003
0.003
10X
549
733
1,099
1,121
1,495
2,243
8,107
10,809
16,213
Log
bv 1*
10X
8.092
0.084
0.007
0.007
0.004
0.003
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-60
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
Removal is
OX
0.132 0.
0.176 0.
0.26S 0.
0.342 0.
0.455 0.
0.683 0.
0.702 1.
0.936 1.
1.404 2.
Percentage
Removal is
OX
CO
CO
00
CD
00
CO
CD
CO
00
Reduced
5X
192
2S6
384
495
660
991
018
358
036
of Time
Reduced
5X
00
00
00
00
00
CD
00
CD
00
by 1*
10X
0.251
0.335
0.503
0.649
0.865
1.298
1.334
1.779
2.668
Log
by 1*
10X
CO
00
00
00
00
00
CO
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-50
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
50Z
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 2SX
50X
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal
OX
0.136
0.182
0.272
0.346
0.461
0.692
0.702
0.936
1.404
is Reduced
5X
0.197
0.263
0.395
O.S02
0.669
1.003
1.018
1.3S8
2.036
Percentage of Time
Removal is Reduced
OX
OB
00
00
00
00
00
00
00
00
SX
CO
CO
00
00
00
00
00
00
00
by 1*
10X
0.259
0.345
0.517
0.657
0.877
1.315
1.334
1.779
2.668
Log
bv 1*
10X
00
00
09
00
00
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-40
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
SOZ
OZ
90th Zile 25Z
50Z
OZ
99th Zile 2SZ
SOZ
Secondary
Infection
Rate
OZ
Mean 2SZ
SOZ
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 2SZ
SOZ
Removal
OZ
0.143
0.190
0.285
0.346
0.461
0.692
0.702
0.936
1.404
is Reduced
5Z
0.207
0.276
0.414
0.502
0.669
1.003
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
OZ
00
00
00
00
00
00
00
OB
00
5Z
CO
00
00
09
CO
CO
CD
00
09
bv 1*
10Z
0.271
0.361
0.542
0.657
0.877
1.315
1.334
1.779
2.668
Log
by 1*
10Z
00
00
00
00
00
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-30
WITH ALTERNATE DISINFECTION
JANUARY 2; 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25Z
50Z
OX
90th Zile 2SX
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Zile 25X
SOX
OX
99th Zile 25Z
50Z
Removal is Reduced
OZ SZ
0.162 0.235
0.216 0.313
0.324 0.470
0.368 0.533
0.491 0.711
0.736 1.067
0.702 1.018
0.936 1.358
1.404 2.036
Percentage of Time
Removal is Reduced
OZ 5Z
09 00
00 00
00 00
00 00
00 00
00 00
00 09
OD GO
00 09
by 1*
10Z
0.308
0.410
0.615
0.699
0.932
1.398
1.334
1.779
2.668
Log
by 1*
10Z
00
00
00
00
09
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-20
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25Z
502
OX
90th Zile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile *" 25X
SOX
OX
99th Xile 2SX
SOX
Removal
OX
0.162
0.216
0.325
0.349
0.46S
0.698
0.702
0.936
1.404
is Reduced
SX
0.235
0.314
0.471
0.506
0.675
1.012
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
OX
00
00
00
OB
00
GO
OB
00
00
5X
CD
00
00
CO
00
DO
00
00
00
by 1*
10X
0.308
0.411
0.617
0.663
0.884
1.326
1.334
1.779
2.668
Log
by 1*
10X
00
00
03
00
00
00
to
at
a
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- HAAs-10
WITH ALTERNATE DISINFECTION
JANUARY 2, 1992 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 25Z
SOZ
Secondary
Infection
Rate
OZ
Mean 2SZ
50Z
OZ
90th Zile 2SZ
SOZ
OZ
99th Zile 25Z
SOZ
0
0
0
0
0
0
0
0
1
Removal is
OZ
.159 0.
.212 0.
.318 0.
.350 0.
.467 0.
.701 1.
.693 1.
.925 1.
.387 2.
Percentage
Removal is
OZ
09
CD
CO
OB
CO
GO
00
00
IB
Reduced
5Z
230
307
461
508
677
016
006
341
Oil
of Time
Reduced
5Z
a
00
00
00
00
00
00
00
00
by 1*
10Z
0.302
0.403
0.604
0.666
0.888
1.331
1.318
1.757
2.635
Log
by 1*
10Z
00
00
00
00
00
00
00
00
00
*Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-100
WITHOUT ALTERNATE DISINFECTION
DECEMBER 12, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 252
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal
OX
174
233
349
312
416
623
3,723 5
4,964 7
7,445 10
is Reduced bv 1*
5X 10X
253 331
337 441
506 662
451 591
602 788
903 1,181
,325 6,885
,100 9,179
,650 13,769
Percentage of Time Log
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 2SX
SOX
Removal
OX
00
00
1.67x10*
252xl09
13,775
0.442
0.003
0.003
0.003
is Reduced bv 1*
5X 10X
oo 4.27x10'
187x10* 1,706
16.058 0.206
1,754 1.912
1.091 0.043
0.016 0.006
0.003 0.003
0.003 0.003
0.003 0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-75
WITHOUT ALTERNATE DISINFECTION
DECEMBER 12, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
02
Mean 252
SOX
OX
90th Zile 25*
SOX
OX
99th Xile 25X
SOX
Secondary
J
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
OX
194
2S8
387
354
472
707
3,723
4,964
7,445
OX
GO
00
28,134
Removal is Reduced
5X
280
374
561
512
683
1,025
5,325
7,100
10,650
Percentage of Time
Removal is Reduced
5X
bv 1*
10X
367
490
735
670
894
1,341
6,885
9,179
13,769
Log
bv 1*
10Z
o> 10.7x10*
1.02xl06 81.852
2.199
Sl.OxlO6 42.112
227.327
0.100
0.003
0.003
0.003
0.182
0.009
0.003
0.003
0.003
0.070
0.263
0.018
0.004
0.003
0.003
0.003
*Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-50
WITHOUT ALTERNATE DISINFECTION
DECEMBER 12, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Removal is Reduced
OX
240
320
480
419
559
838
3,723
4,964
7,445
5X
348
463
695
607
809
1,213
5,325
7.100
10,650
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 2SX
SOX
bv 1*
10X
455
607
910
794
1,058
1,587
6,885
9,179
13,769
Log
Removal is Reduced bv 1*
OX
00
3 . 84xl09
51.775
26,626
4.132
0.025
0.003
0.003
0.003
5X
220xl06
376.753
0.120
1.195
0.035
0.005
0.003
0.003
0.003
10X
1,333
0.955
0.015
0.043
0.008
0.004
0.003
0.003
0.003
*Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-25
WITHOUT ALTERNATE DISINFECTION
DECEMBER 12, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
OX
257
343
Removal is Reduced
5X
372
496
514 744
548
731
1,096
3,736
4,982
7,473
OX

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-100
WITHOUT ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25Z
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
Secondary
J
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile * 25X
SOX
OX
99th Xile 2SX
SOX
Removal is
OX
0.132 0.
0.175 0.
0.263 0.
0.342 0.
0.455 0.
0.683 0.
0.702 1.
0.936 1.
1.404 2.
Percentage
Removal is
OX
00
CO
00
CO
OB
CD
CO
00
00
Reduced
5X
191
254
381
495
660
991
018
358
036
of Time
Reduced
5X
00
00
CO
00
00
00
00
00
00
by 1*
10X
0.250
0.333
0.500
0.649
0.865
1.298
1.334
1.779
2.668
Log
by 1*
10X
00
00
00
00
00
00
00
00
OB
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-75
WITHOUT ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
SOX
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
50Z
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 2SZ
SOZ
Removal
OZ
0.144
0.193
0.289
0.346
0.461
0.692
0.702
0.936
1.404
is Reduced
SZ
0.209
0.279
0.419
0.502
0.669
1.003
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
OZ
00
00
00
CD
00
CD
00
OR
00
5Z
00
CO
CD
-00
OR
00
CD
CO
OB
bv 1*
10Z
0.274
0.366
0.549
0.657
0.877
1.315
1.334
1.779
2.668
Log
by 1*
10Z
00
00
CO
00
00
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-50
WITHOUT ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 252
SOX
OX
90th Xile 25X
50X
OX
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
0.
0.
0.
0.
0.
0.
0.
0.
1.
OX
CD
00
00
00
CD
00
OD
00
OD
Removal is Reduced
OX SX
157 0.227
209 0.303
313 0.454
346 0.502
461 0.669
692 1.003
702 1.018
936 1.358
404 2.036
Percentage of Time
Removal is Reduced
5X
00
00
CD
00
00
00
00
00
00
by 1*
10X
0.298
0.397
0.595
0.657
0.877
1.315
1.334
1.779
2.668
Log
by 1*
10X
00
00
00
00
00
00
CD
00
CO
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-25
WITHOUT ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25X
SOX
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
50Z
Secondary
Infection
Rate
OZ
Mean 25Z
50%
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 25Z
SOZ
0.
0.
0.
0.
0.
0.
0.
0.
1.
OZ
GD
00
00
00
00
00
00
00
00
Removal is Reduced
OZ 5Z
165 0.240
221 0.320
331 0.480
358 0.519
477 0.692
715 1.037
702 1.018
936 1.358
404 2.036
Percentage of Time
Removal is Reduced
5Z
00
00
00
00
00
00
00
n
00
bv 1*
10Z
0.314
0.419
0.629
0.680
0.906
1.359
1.334
1.779
2.668
Log
by 1*
10Z
OB
09
09
09
00
to
00
09
09
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-100
WITH ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Removal is Reduced
OX
171
228
343
294
392
588
3,723
4,964
7,445
5X
248
331
497
426
568
852
5,325
7,100
10,650
Percentage of Time
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Removal is Reduced
OX
00
00
3.65xl06
12.3x10"
129,871
1.014
0.003
0.003
0.003
5X
by 1*
10X
325
434
650
SS8
744
1,116
6,885
9,179
13,769
Log
bv 1*
10X
* 13.6xl09
510x10*
23.657
13,851
2.994
0.022
0.003
0.003
0.003
3,084
0.255
5.870
0.072
0.007
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-75
WITH ALTERNATE DISINFECTION
DECEMBER 16. 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
50%
OX
90th Xile 2SX
SOX
OX
99th Xile 2SX
SOX
Secondary
Infection
Rate
OX
Mean 25X
50X
OX
90th Xile 25X
SOX
OX
99th Xile 25X
SOX
OX
196
261
392
354
472
707
3,723
4,964
7,445
OX
CD
00
17,841
Removal is Reduced bv 1*
5X 10X
284 372
379 496
568 744
512 670
683 894
1,025 1,341
5,325 6,885
7,100 9,179
10,650 13,769
Percentage of Time Log
Removal is Reduced bv 1*
5X 10X
o 5.52xl06
573,404 58.721
1.769 0.062
81.0x10* 42.112 0.263
227.327
0.100
0.003
0.003
0.003
0.182 0.018
0.009 0.004
0.003 0.003
0.003 0.003
0.003 0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-50
WITH ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
Secondary
Infection
Rate
OX
Mean 2SX
SOX
OX
90th Xile 2SX
SOX
OX
99th Xile 25X
SOX
Removal is Reduced bv 1*
OX
239
318
477
419
559
838
3,723
4,964
7,445
OX
5X 10X
346 453
461 604
692 906
606 794
809 1,058
1,213 1,587
5,325 6,885
7,100 9,179
10,650 13,769
Percentage of Time Log
Removal is Reduced bv 1*
5X 10X
» 293xl06 1,574
5.21x10' 436.376 1.035
58.281 0.126 0.016
26,626
4.132
0.025
0.003
0.003
0.003
1.195 0.043
0.035 0.008
0.005 0.004
0.003 0.003
0.003 0.003
0.003 0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-25
WITH ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 25Z
SOZ
OX
90th Xile 25Z
SOZ
-ox
99th Xile 25X
SOX
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Zile 25X
SOZ
OZ
99th Zile 25Z
SOZ
Removal is Reduced bv 1*
OZ
2S8
344
S16
549
733
1,099
3.7M
4,982
7,473
5Z-
-^^••"
374
499
747
795
1,060
1,590
3,344
7,126
10,689
10Z
489
652
978
1,040
1,386
2,079
6,909
9,212
13,818
Percentage of Time Log
Removal is Reduced bv 1*
OZ
5Z
CD 4.45xl06
62.8x10' 52.690
10.547
8.112
0.084
0.007
0.003
0.003
0.003
0.060
0.042
0.008
0.004
0.003
0.003
0.003
10Z
145 . 502
0.329
0.011
0.009
0.004
0.003
0.003
0.003
0.003
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-100
WITH ALTERNATE DISINFECTION
DECEMBER 16. 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OX
Mean 252
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 25X
50X
Secondary
Infection
Rate
OX
Mean 25X
SOX
OX
90th Xile 25X
SOX
OX
99th Xile 2SX
SOX
Removal
OX
0.134
0.179
0.268
0.342
0.455
0.683
0.702
0.936
1.404
is Reduced
SX
0.195
0.259
0.389
0.495
0.660
0.991
1.018
1.358
2.036
Percentage of Time
Removal is Reduced
OX
CD
00
00
00
OB
00
00
00
00
5X
00
00
CD
00
00
00
00
00
00
by 1*
10X
0.255
0.340
0.510
0.649
0.865
1.298
1.334
1.779
2.668
Log
by 1*
10X
00
00
00
00
00
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SVTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-75
WITH ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
502
OZ
90th Zile 25Z
50Z
OZ
99th Zile 2SZ
50Z
Secondary
Infection
Rate
OZ
Mean 2SZ
SOZ
OZ
90th Zile 25Z
SOZ
OZ
99th Zile 25Z
SOZ
0.
0.
0.
0.
0.
0.
0.
0.
1.
OZ
00
CD
CD
CO
CO
00
CO
CD
CD
Removal is Reduced
OZ 5Z
148 0.214
197 0.286
295 0.428
346 0.502
461 0.669
692 1.003
702 1.018
936 1.358
404 2.036
Percentage of Time
Removal is Reduced
52
CD
CD
CO
CO
CD
CO
00
CD
CD
bv 1*
10Z
0.281
0.374
0.561
0.657
0.877
1.315
1.334
1.779
2.668
Log
by 1*
10Z
CD
CD
CD
CD
CD
00
00
CD
CO
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -- SURFACE: NO SOFTENING -- TTHMs-50
WITH ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
50Z
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 25Z
50Z
OZ
99th Zile 25Z
50Z
0.
0.
0.
0.
0.
0.
0.
0.
1.
Removal
OZ
156
208
311
346
461
692
702
936
404
is
0.
0.
0.
0.
0.
1.
1.
1.
2.
Percentage
Removal is
OZ
00
00
00
00
GO
OB
CO
00
00
5Z
GO
00
00
00
00
a
00
00
00
Reduced
5Z
226
301
452
502
669
003
018
358
036
of Time
Reduced
by
1*
10Z
0.
0.
0.
0.
0.
1.
1.
1.
2.
Log
by
10Z
00
00
00
00
00
00
00
00
00
296
395
592
657
877
315
334
779
668
1*
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------
ENHANCED SWTR DATA -- FIRST CUSTOMER -• SURFACE: NO SOFTENING -- TTHMs-25
WITH ALTERNATE DISINFECTION
DECEMBER 16, 1991 VERSION
Percentage of Time Log
Average Number
of Cases per
10,000 per Year
Average Number
of Years for
an Outbreak
Secondary
Infection
Rate
OZ
Mean 25Z
50Z
OZ
90th Zile 2SZ
SOZ
OZ
99th Zile 25Z
SOZ
Secondary
Infection
Rate
OZ
Mean 25Z
SOZ
OZ
90th Zile 2SZ
SOZ
OZ
99th Zile 2SZ
SOZ
0.
0.
0.
0.
0.
0.
0.
0.
1.
OZ
09
CO
CD
OB
GO
09
00
00
OB
Removal is Reduced
OZ 5Z
164 0.237
218 0.316
327 0.474
350 0.508
467 0.677
701 1.016
702 1.018
936 1.358
404 2.036
Percentage of Time
Removal is Reduced
5Z
GO
00
00
00
00
00
00
CO
OB
bv 1*
10Z
0.311
0.414
0.622
0.666
0.888
1.331
1.334
1.779
2.668
Log
bv 1*
10Z
OB
00
00
00
00
00
00
00
00
^Statistical method where distribution mean equal to weighted average of
resulting finished water levels.

-------