United States
Environmental Protection
Agency
oEPA         FACTOIDS:
               Drinking Water
               and
               Ground Water
               Statistics for
               2004

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Office of Water (4606M)
EPA816-K-05-001
May 2005
www.epa.gov/safewater
                                                           Printed on Recycled Paper

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There are approximately 160,000 public drinking water systems in the United States. Each of these
systems regularly supplies drinking water to at least 25 people or 15 service connections. Beyond
their common purpose, the 160,000 systems vary widely. The following tables group water systems
into categories that show their similarities and differences. For example, the first table shows that
most people in the US (268 milion) get their water from a community water system. There are
approximately 54,000 community water systems, but just seven percent of those systems (3,797)
serve 81  percent of the people. The second table shows that more water systems  have ground
water than surface water as a source-but more people drink from a surface water system. Other
tables break down these national numbers by state, territory, and EPA region.

This package also contains figures on the types and locations of underground injection control
wells. EPA and states regulate the placement and operation of these wells to ensure that they do
not threaten underground sources of drinking water. The underground injection control program
statistics  are based on separate reporting from the states to EPA.

The drinking water system statistics on the following pages are taken from the Safe Drinking Water
Information System/Federal version (SDWIS/Fed). SDWIS/Fed is the U.S. Environmental
Protection Agency's official record of public drinking water systems, their violations of state and
EPA regulations, and enforcement actions taken by EPA or states as a result of those violations.
EPA maintains the database using information collected and submitted by the states.

Notice: Compliance statistics are based  on violations reported by states to the EPA Safe Drinking
Water Information System. EPA is aware of inaccuracies and underreporting of some data in this
system. We are working with the states to improve the quality  of the data. An analysis of
SDWIS/Fed data quality is available atwww.epa.gov/safewater/data/reports.html

For more information and additional drinking water data tables, please visit
http://www.epa.gov/safewater/data/getdata.html.

Acronyms & Abbeviations:
CWS: Community Water System
FY: (federal) Fiscal Year [October 1-September 30]
GPRA: Government Performance and Results Act-program measures
M/R: Monitoring/Reporting violation [water system's failure to monitor for, or report to the state, the
level of a contaminant on the required schedule]
MCL: Maximum  Contaminant Level [the  legal limit on a contaminant in drinking water
MRDL: Maximum Residual Disinfectant Level [for disinfectants added to drinking water]
NTNCWS: Non-Transient Non-Community Water System
Other: Other violations of EPA rules (including failure to provide public notice of another violation,
or failure  to prepare and/or distribute a Consumer Confidence Report)
Pop. Served: Population served (by a water system)
PWS: Public Water System
PWSS: Public Water System Supervision program
SDWIS/FED: Safe Drinking Water System/Federal version
TNCWS:  Transient Non-Community Water System
TT: Treatment Technique [a drinking water treatment required by EPA or state rules^

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                        FY2004  Drinking Water Factoids
Public Water System Inventory data
Active, current systems, from Safe Drinking Water Information System/Federal version (SDWIS/FED) 04Q4 frozen inventory table
System size
by population served
 Very Small
 500 or less
  Small
501-3,300
  Medium
3,301-10,000
    Large
10,001-100,000
Very Large
 >100,000
Total
cws
NTNCWS
TNCWS
# systems
Pop. served
% of systems
% of pop
# systems
Pop. served
% of systems
% of pop
# systems
Pop. served
% of systems
% of pop
30,006 14,212 4,707 3,541 372
4,957,131 20,137,604 27,346,264 99,808,668 120,246,010
57% 27% 9% 7% 1%
2% 7% 10% 37% 44%
16,545 2,720 96 14
2,301,594 2,712,522 517,296 401,908
85% 14% 0% 0% 0%
39% 46% 9% 7% 0%
84,740 2,700 110 29 4
7,318,174 2,667,965 611,822 617,698 7,269,001
97% 3% 0% 0% 0%
40% 14% 3% 3% 39%
52,838
272,495,677
100%
100%
19,375
5,933,320
100%
100%
87,583
18,484,660
100%
100%
          Total # syster
     131,291
    19,632
      4,913
       3,584
       376
 159,796
CWS = Community Water System: A public water system that supplies water to the same population year-round.
NTNCWS = Non-Transient Non-Community Water System: A public water system that regularly supplies water to at least 25
of the same people at least six months per year, but not year-round. Some examples are schools, factories, office buildings,
and hospitals which have their own water systems.
TNCWS = Transient Non-Community Water System: A public water system that provides water in a place such as a gas
station or campground where people do not remain for long periods of time.
Water source
   Type
Ground Water Surface Water
                  Totals
CWS
NTNCWS
TNCWS
# systems
Pop. served
% of systems
% of pop
# systems
Pop. served
% of systems
% of pop
# systems
Pop. served
% of systems
% of pop
41,264 11,574
90,499,550 181,996,127
78% 22%
33% 67%
18,647 728
5,356,710 576,610
96% 4%
90% 10%
85,587 1,996
15,691,358 2,793,302
98% 2%
85% 15%
52,838
272,495,677
100%
100%
19,375
5,933,320
100%
100%
87,583
18,484,660
100%
100%
          Total # syster
     145,498
 111,547,618
    14,298
185,366,039
    159,796
 Ground water systems = ground water (GW), purchased ground water (GWP)
 Surface water systems = surface water (SW), purchased surface water (SWP),
           ground water under the direct influence of surface water (GU),
           purchased ground water under the direct influence of surface water (GUP).
SDWIS/FED 04Q4 tables were "frozen" in early January 2005

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 FY2004 water system data-by State           Key:
Active, current systems, from SDWIS/FED 04Q4 frozen inventory table
Health-based (Treatment Technique & Maximum Contaminant Level) violations, from 04Q4 frozen violations table
   AK

   AL

   AR

   AZ

   CA

   CO

   CT

   DC

   DE

   FL

   GA

   HI

   IA

   ID

   IL

   IN

   KS

   KY

   LA

   MA

   MD

   ME

   Ml

   MN

   MO

   MS
                CWS NTNCWS   TNCWS
Total
Ground
Surface
CWSs w/ reported
health-based
violations
436 220 969
465,008 47,418 96,784
619 31 70
5,177,165 18,518 7,374
728 40 341
2,504,010 10,268 17,021
789 197 605
4,912,776 128,937 120,380
3,123 1,418 3,055
32,877,694 422,576 6,095,389
830 163 944
4,986,055 72,630 270,601
586 658 1 ,737
2,707,276 128,777 60,611
3 3
606,000 4,670
226 105 177
791,675 24,531 57,325
1 ,881 1 ,009 3,341
17,205,824 264,565 296,166
1 ,689 242 550
7,363,830 70,645 88,178
115 13 3
1,280,327 11,043 400
1,142 144 713
2,559,61 1 47,609 87,600
752 244 1 ,029
953,210 51,614 113,744
1 ,792 405 3,700
11,568,029 144,382 390,982
840 686 2,897
4,667,741 196,992 408,140
911 52 101
2,562,950 19,107 3,788
417 50 65
4,594,369 18,482 8,566
1,111 179 312
4,886,463 69,719 72,822
523 250 939
8,975,932 68,704 174,008
502 573 2,621
4,845,205 169,401 171,787
399 369 1 ,221
616,267 71,923 196,857
1 ,438 1 ,631 8,841
7,278,655 354,802 1 ,038,931
965 563 6,273
3,963,562 89,455 510,591
1,463 241 1,016
4,909,561 73,620 128,360
1,170 95 118
3,040,537 74,394 23,596
1,625
609,210
720
5,203,057
1,109
2,531 ,299
1,591
5,162,093
7,596
39,395,659
1,937
5,329,286
2,981
2,896,664
6
610,670
508
873,531
6,231
17,766,555
2,481
7,522,653
131
1 ,291 ,770
1,999
2,694,820
2,025
1,118,568
5,897
12,103,393
4,423
5,272,873
1,064
2,585,845
532
4,621,417
1,602
5,029,004
1,712
9,218,644
3,696
5,186,393
1,989
885,047
11,910
8,672,388
7,801
4,563,608
2,720
5,111,541
1,383
3,138,527


























1,372 253
303,523 305,687
41 1 309
1,486,387 3,716,670
701 408
926,007 1,605,292
1,534 57
2,443,274 2,718,819
6,517 1,079
15,989,075 23,406,584
1,485 452
723,944 4,605,342
2,906 75
463,927 2,432,737
6
610,670
505 3
597,401 276,130
6,160 71
14,973,905 2,792,650
2,259 222
1,600,034 5,922,619
115 16
1,169,001 122,769
1,836 163
1,483,974 1,210,846
1,951 74
1,050,021 68,547
5,175 722
3,351,009 8,752,384
4,296 127
2,897,156 2,375,717
685 379
714,563 1,871,282
176 356
376,670 4,244,747
1,518 84
3,010,717 2,018,287
1,524 188
2,080,713 7,137,931
3,600 96
944,837 4,241,556
1,911 78
456,241 428,806
11,606 304
3,072,606 5,599,782
7,690 111
3,230,991 1,332,617
2,479 241
1,761,837 3,349,704
1,380 3
2,849,493 289,034


























74 17%
48,636 10%
1 1 2%
41,031 1%
96 13%
225,605 9%
106 13%
1,533,665 31%
178 6%
4,276,549 13%
56 7%
597,835 12%
68 12%
45,332 2%
1 33%
595,000 98%
24 11%
159,034 20%
116 6%
1,719,617 10%
46 3%
124,556 2%
3 3%
18,001 1%
58 5%
162,431 6%
89 12%
124,206 13%
202 11%
899,345 8%
95 11%
223,762 5%
97 11%
181,965 7%
40 10%
500,522 11%
99 9%
441 ,520 9%
41 8%
690,253 8%
25 5%
18,850 0%
76 19%
125,060 20%
69 5%
116,492 2%
21 2%
36,774 1%
186 13%
240,894 5%
19 2%
67,171 2%

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 FY2004 water system data-by State
Active, current systems, from SDWIS/FED 04Q4 frozen inventory table
Health-based (Treatment Technique & Maximum Contaminant Level) violations, from 04Q4 frozen violations table
   MT
   NC
   ND
   NE
   NH
   NJ
   NM
   NV
   NY
   OH
   OK
   OR
   PA
   Rl
   SC
   SD
   TN
   TX
   UT
   VA
   VT
   WA
   Wl
   WV
   WY
                CWS NTNCWS   TNCWS
                         Total
                        Ground
                       Surface
                         CWSs w/ reported
                         health-based
                         violations
676 227 1,157
681,326 60,483 173,913
2,174 566 4,322
6,435,706 156,004 355,293
320 29 174
551,910 4,167 15,423
606 188 583
1,416,485 43,547 87,732
698 444 1,137
803,172 90,925 232,690
607 870 2,644
7,891,239 217,056 381,246
645 147 483
1,590,051 38,900 131,448
253 106 251
1,894,696 38,253 28,109
2,816 757 6,432
17,900,676 326,776 2,916,321
1,318 970 3,191
10,037,355 236,836 482,841
1,135 120 355
3,442,683 19,699 26,734
874 337 1 ,437
2,924,951 75,556 223,858
2,135 1,213 6,544
10,453,283 513,299 841,775
83 78 321
977,398 27,160 55,041
659 171 576
3,425,186 54,632 35,613
467 28 194
659,281 12,109 26,868
681 46 424
5,346,416 28,795 59,529
4,489 785 1 ,225
22,674,849 321 ,559 245,421
451 63 433
2,490,321 27,582 68,476
1 ,263 602 1 ,293
6,083,683 305,751 216,406
435 234 678
514,473 43,024 164,736
2,274 315 1,541
5,597,194 138,684 415,122
1 ,086 907 9,376
3,858,783 190,514 689,414
536 154 534
1,442,234 44,510 34,899
276 87 385
439,026 18,947 76,068
2,060
915,722
7,062
6,947,003
523
571 ,500
1,377
1 ,547,764
2,279
1,126,787
4,121
8,489,541
1,275
1 ,760,399
610
1 ,961 ,058
10,005
21,143,773
5,479
10,757,032
1,610
3,489,116
2,648
3,224,365
9,892
1 1 ,808,357
482
1 ,059,599
1,406
3,515,431
689
698,258
1,151
5,434,740
6,499
23,241 ,829
947
2,586,379
3,158
6,605,840
1,347
722,233
4,130
6,151,000
1 1 ,369
4,738,711
1,224
1 ,521 ,643
748
534,041

























1,836 224
502,738 412,984
6,633 429
1,991,577 4,955,426
435 88
260,124 311,376
1,302 75
771,897 775,867
2,220 59
598,081 528,706
4,019 102
3,128,541 5,361,000
1,204 71
1,527,808 232,591
576 34
314,277 1,646,781
8,752 1,253
5,532,883 15,610,890
5,086 393
3,443,159 7,313,873
889 721
691,324 2,797,792
2,349 299
844,139 2,380,226
9,315 577
2,788,807 9,019,550
458 24
227,010 832,589
1,180 226
595,626 2,919,805
555 134
294,388 403,870
597 554
1,445,228 3,989,512
5,360 1,139
6,936,466 16,305,363
817 130
778,203 1,808,176
2,782 376
854,156 5,751,684
1,212 135
348,140 374,093
3,983 147
4,425,417 1,725,583
11,320 49
3,000,181 1,738,530
861 363
306,972 1,214,671
632 116
189,317 344,724

























78 12%
38,618 6%
264 12%
598,465 9%
22 7%
27,360 5%
134 22%
387,901 27%
101 14%
62,471 8%
16 3%
173,806 2%
82 13%
135,400 9%
23 9%
49,989 3%
115 4%
1 ,673,91 1 9%
79 6%
229,759 2%
161 14%
1,012,659 29%
133 15%
110,513 4%
124 6%
2,234,932 21%
5 6%
22,208 2%
66 10%
203,420 6%
44 9%
10,652 2%
25 4%
197,510 4%
280 6%
872,721 4%
39 9%
120,478 5%
162 13%
658,592 11%
64 15%
34,977 7%
264 12%
377,592 7%
54 5%
291 ,652 8%
34 6%
70,367 5%
15 5%
5,140 1%
                51,407
            265,832,109
  19,025
5,689,550
   87,328
18,424,977
157,760
   144,165
109,753,765
    13,595
180,192,871
    4,280
22,815,199

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 FY2004 water system data-Tribal
Active, current systems, from SDWIS/FED 04Q4 frozen inventory table
Health-based (Treatment Technique & Maximum Contaminant Level) violations, from 04Q4 frozen violations table
 Region
   01
   02
   04
   05
   06
   07
   08
   09
   10
 Navajo
 Nation
CWS NTNCWS   TNCWS
Total
Ground
Surface
CWSs w/ reported
health-based
violations
1 2 3
120 60 670
8 3
7,650 300
16 2 18
97,167 1,107 2,035
78 31 9
82,310 26,995 1,338
45 18 13
59,065 24,527 743
9 4
6,173 525
106 9 5
80,508 5,816 435
243 41 42
242,753 54,221 5,773
79 15 12
36,645 7,369 14,021
154 3 6
180,090 3,969 8,834
6
850
11
7,950
36
100,309
118
110,643
76
84,335
13
6,698
120
86,759
326
302,747
106
58,035
163
192,893










6
850
10 1
5,150 2,800
35 1
90,809 9,500
116 2
110,154 489
73 3
81,005 3,330
12 1
6,200 498
101 19
62,227 24,532
297 29
279,290 23,457
97 9
39,130 18,905
153 10
166,311 26,582










0%
0%
0%
0%
0%
0%
2 3%
14,846 18%
3 7%
1 ,780 3%
0%
0%
14 13%
5,256 7%
48 20%
34,363 14%
2 3%
560 2%
4 3%
19,079 11%
739 121 115 975 900 75 73
792,481 124,064 34,674 841,126 110,093 75,884
 FY2004 water system data-Commonwealths and Territories
Active, current systems, from SDWIS/FED 04Q4 frozen inventory table                            Key:
Health-based (Treatment Technique & Maximum Contaminant Level) violations, from 04Q4 frozen violations table
                                                            # systems
                                                            Pop served
  Amer.
 Samoa
  Guam
   N.
Marianas
 Puerto
  Rico
  Palau
  Virgin
 Islands
               CWS NTNCWS   TNCWS
                              Total
         Ground
            Surface
          CWSs w/ reported
         health-based
         violations
22
52,458
10 2
109,070 770
79 32 17
99,923 8,588 2,045
467 56 6
5,507,481 45,845 2,339
16 2
12,060 1,163
98 137 117
90,095 63,340 20,625
22
52,458
12
109,840
128
110,556
529
5,555,665
18
13,223
352
174,060






12 10
49,618 2,840
8 4
20,990 88,850
124 4
44,074 66,482
284 245
833,097 4,722,568
2 16
400 12,823
3 349
4,548 169,512






17 77%
51 ,944 99%
0%
0%
0%
0%
284 61%
4,341,713 79%
0%
0%
6 6%
438 0%
692 229 140 1,061 433 628 307
5,871,087 119,706 25,009 952,727 5,063,075 4,394,095

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Government Performance and Results Act (GPRA)--
Strategic Sub-objective For Drinking Water 2.1.1

GPRA requires agencies to develop plans for what they intend to accomplish, measure how
well they are doing, make appropriate decisions based on the information they have
gathered, and communicate information about their performance to Congress and to the
public.

EPA Strategic Objective 2.1: Protect Public Health, Sub-objective 2.1.1: Water Safe To
Drink: By 2008, 95% of the population served by community water systems will receive
drinking water that meets all applicable health-based drinking water standards through
effective treatment and source water protection. (2002 Baseline: 93.6 percent of population;
note that year-to-year performence is expected to change overtime as new standards take
effect.)

Notice: These measures are based on violations reported by states to the EPA Safe Drinking
Water Information System. EPA is aware of inaccuracies and underreporting of some data in
this system. We are working with the states to improve the quality of the data.
By EPA region
Nationally 123456789 10
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
90%
90%
94%
91%
91%
91%
89%
87%
86%
84%
83%
79%












93%
89%
88%
65%
62%
75%
64%
62%
60%
57%
57%
60%
80%
54%
81%
77%
76%
61%
60%
55%
53%
52%
55%
56%
85%
95%
98%
98%
97%
98%
97%
97%
92%
91%
87%
85%
93%
93%
96%
95%
95%
95%
95%
93%
93%
92%
90%
90%
96%
95%
94%
92%
95%
95%
95%
92%
92%
92%
88%
77%
92%
93%
93%
96%
96%
95%
95%
93%
94%
88%
87%
92%
92%
93%
95%
90%
95%
95%
94%
95%
95%
95%
94%
93%
92%
92%
97%
94%
94%
94%
93%
91%
92%
90%
91%
92%
86%
98%
99%
97%
94%
97%
95%
95%
91%
88%
90%
69%
93%
93%
91%
83%
83%
94%
89%
74%
74%
75%
87%
85%
CT NJ DE AL IL AR IA CO AZ AK
ME NY DC FL IN LA KS MT CA ID
MA PR MD GA Ml NM MO ND HI OR
NH VI PA KY MN OK NE SD NV WA
Rl VA MS OH TX UT AS
VT WV NC Wl WY GU
SC MP
TN PW
Health-based violations include Maximum Contaminant Level (MCL), Maximum Residual Disinfectant
Level (MRDL) and Treatment Technique (TT) violations.
Population data are based on active, current water systems
For FY2004, population and violation data are from SDWIS/FED 04Q4 frozen tables.
For FY2003, population and violation data are from SDWIS/FED 03Q4 frozen tables.
For FY2002, population and violation data are from SDWIS/FED 02Q4 frozen tables.
For FY2001, population and violation data are from SDWIS/FED 01Q4 frozen tables. CA population data from OOQ4 frozen table
For FY2000, population and violation data are from SDWIS/FED OOQ4 frozen tables.
For FY1999, population and violation data are from SDWIS/FED 99Q4 frozen tables.
For FY1998, population and violation data are from SDWIS/FED 98Q4 frozen tables.
For FY1997 and earlier, population and violation data are from SDWIS/FED 98Q1 frozen tables.

-------
Government Performance and Results Act (GPRA)--
Strategic Targets for Standards In Place Before 12/2001

GPRA requires agencies to develop plans for what they intend to accomplish, measure how well
they are doing, make appropriate decisions based on the information they have gathered, and
communicate information about their performance to Congress and to the public.

EPA Strategic Targets: by 2008, 95% of community water systems and 95% of the population
served by them will provide drinking water that meets all existing health-based standards with
which systems need to comply as of December 2001. (2002 Baseline: 93.6% of the population,
91.6 percent of systems).

Notice: These measures are  based on violations reported by states to the EPA Safe Drinking
Water Information System. EPA is aware of inaccuracies and underreporting of some data in this
system. We are working with the states to improve the quality of the data.
 % Population served
                  By EPA region
      Nationally
1
           10
94%
90%
88%
86%
59%
81%
92%
97%
98%
95%
94%
96%
96%
95%
94%
96%
96%
94%
93%
94%
95%
93%
93%
97%
86%
98%
99%
93%
93%
91%
 % Systems The systems measure was added to provide context to the population-based
                  measure because it is less volatile and is not biased towards large systems.
                   By EPA region
      Nationally
1
8
10
2004 92%
2003 92%
2002 92%








87%
86%
86%
CT
ME
MA
NH
Rl
VT


90%
90%
89%
NJ
NY
PR
VI




92%
93%
92%
DE
DC
MD
PA
VA
WV


94%
93%
94%
AL
FL
GA
KY
MS
NC
SC
TN
93%
94%
93%
IL
IN
Ml
MN
OH
Wl


93%
93%
93%
AR
LA
NM
OK
TX



90%
89%
87%
IA
KS
MO
NE




92%
92%
92%
CO
MT
ND
SD
UT
WY


92%
95%
95%
AZ
CA
HI
NV
AS
GU
MP
PW
87%
88%
87%
AK
ID
OR
WA




Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations.
Population data are based on active, current water systems
For FY2004, population and violation data are from SDWIS/FED 04Q4 frozen tables.
For FY2003, population and violation data are from SDWIS/FED 03Q4 frozen tables.
For FY2002, population and violation data are from SDWIS/FED 02Q4 frozen tables.
For FY2001, population and violation data are from SDWIS/FED 01Q4 frozen tables. CA population data from OOQ4 frozen tables
For FY2000, population and violation data are from SDWIS/FED OOQ4 frozen tables.
For FY1999, population and violation data are from SDWIS/FED 99Q4 frozen tables.
For FY1998, population and violation data are from SDWIS/FED 98Q4 frozen tables.
For FY1997 and earlier, population and violation data are from SDWIS/FED 98Q1 frozen tables.

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Government Performance and Results Act (GPRA)--
Strategic Targets for Standards In Place After 2001

GPRA requires agencies to develop plans for what they intend to accomplish, measure
how well they are doing, make appropriate decisions based on the information they have
gathered, and communicate information about their performance to Congress and to the
public.

EPA Strategic Targets: by 2008, 80% of community water systems and 95% of the
population served by them will provide drinking water that meets all existing health-based
standards with a compliance date of January 2002 or later.

Notice: These measures are based on violations reported by states to the EPA Safe
Drinking Water Information System. EPA is aware of inaccuracies and underreporting of
some data in this system. We are working with the states to improve the quality of the
data.

Applicable standards in FY2004:
        * Interim Enhanced Surface Water Treatment Rule-CWSs w/ surface water sources
              serving 10,000 or more people
        * Disinfection By-Products (DBP) Rule for CWSs that disinfect. In FY2003, this
             rule applied to  systems serving >10,000 people
 % Population served
                    By EPA region
   Nationally         1     23456789    10
  2004
  2003
99%
98%
84%
79%
92%
98%
98%
98%
100%
100%
96%
94%
99%
97%
99%
99%
100%
100%
100%
100%
 % Systems The systems measure was added to provide context to the population-based
                   measure because it is less volatile and is not biased towards large systems.
                    By EPA region
Nationally
2004 99%
2003 93%








1
99%
96%
CT
ME
MA
NH
Rl
VT


2
99%
76%
NJ
NY
PR
VI




3
100%
93%
DE
DC
MD
PA
VA
WV


4
99%
94%
AL
FL
GA
KY
MS
NC
SC
TN
5
100%
99%
IL
IN
Ml
MN
OH
Wl


6
98%
86%
AR
LA
NM
OK
TX



7
99%
92%
IA
KS
MO
NE




8
99%
98%
CO
MT
ND
SD
UT
WY


9
100%
100%
AZ
CA
HI
NV
AS
GU
MP
PW
10
100%
100%
AK
ID
OR
WA




Health-based violations include Maximum Contaminant Level (MCL), Maximum Residual Disinfectant Level
(MRDL), and Treatment Technique (TT) violations.
Population data are based on all active Community Water Systems
For FY2004, population and violation data are from SDWIS/FED 04Q4 frozen tables.
For FY2003, population and violation data are from SDWIS/FED 03Q4 frozen tables.

-------
CWS violations reported
by FY
               FY2004 data from SDW1S/FED 04Q4 frozen tables, except for Chem M/Rs which will be from 05Q1
               FY2003 data from SDWIS/FED 03Q4 frozen tables, except for Chem M/Rs which are from 04Q1
               FY2002 data from SDWIS/FED 02Q4 frozen tables, except for Chem M/Rs which are from 03Q1
               FY2001 data from SDWIS/FED 01Q4 frozen tables, except for Chem M/Rs which are from 02Q1
               FY2000 data from SDWIS/FED OOQ4 frozen tables, except for Chem M/Rs which are from 01Q1
   Number of violations
FY        MCL       MRDL           TT          M/R      Other*        Total
2004
2003
2002
2001
2000
5,562
4,884
4,693
5,231
4,754
6
1



2,168
2,299
2,408
2,493
3,053

68,840
80,635
63,476
51,912
14,459
12,671
1 1 ,759
1 1 ,455
10,634

88,695
99,495
82,655
70,353
          Number of systems in violation
      FY        MCL        MRDL
                                                 M/R
Other*
          Population affected
Total
2004
2003
2002
2001
2000
3,455
3,069
3,193
3,241
3,161
4
1



1,409
1,458
1,482
1,572
1,682

12,880
12,430
13,639
13,736
8,947
8,109
8,386
8,631
8,937

20,343
20,232
20,996
21 ,308
FY
2004
2003
2002
2001
2000
MCL
15,060,424
16,082,938
8,800,095
11,165,733
1 1 ,947,655
MRDL
3,617
2,250
TT
16,588,301
16,969,087
9,245,467
15,474,893
15,394,154
M/R
49,812,213
32,503,639
52,618,908
34,186,550
Other*
17,833,120
12,726,332
17,809,478
25,780,359
13,881,076
Total
81 ,672,086
56,644,512
77,845,089
62,921 ,077
by system size
Number of violations
MCL MRDL
Very small 3,236 5
Small 1,319 1
Medium 467
Large 508
Very large 32
Number of systems in
MCL MRDL
Very small 2,032 3
Small 806 1
Medium 324
Large 279
Very large 14
Population affected
MCL MRDL
Very small 321,189 729
Small 1,137,506 2,888
Medium 1 ,899,602
Large 6,498,620
Very large 5,203,507
TT
1,126
566
223
221
32
violation
TT
808
365
107
112
17
TT
138,990
526,429
626,595
3,144,929
12,151,358
M/R Other Total
10,610
2,862
599
362
26
M/R Other Total
6,215
2,002
438
270
22
M/R Other Total
972,645
2,622,772
2,522,833
7,134,959
4,579,911
* Totals for the number of systems in violation, and for population affected, should be lower than the sum in each row.
   This is because some systems will have incurred more than one type of violation.
FY2003 and 2004 compliance information includes new DBP and IESWTR rules

-------
NTNCWS violations reported by FY
                      FY2004 data from SDW1S/FED 04Q4 frozen tables,
                      FY2003 data from SDW1S/FED 03Q4 frozen tables,
                      FY2002 data from SDWIS/FED 02Q4 frozen tables,
                      FY2001 data from SDWIS/FED 01Q4 frozen tables,
                      FY2000 data from SDWIS/FED OOQ4 frozen tables,
          Number of violations
       FY        MCL        MRDL          TT         M/R
except for Chem M/Rs which will be from 05Q1
except for Chem M/Rs which are from 04Q1
except for Chem M/Rs which are from 03Q1
except for Chem M/Rs which are from 02Q1
except for Chem M/Rs which are from 01Q1
    Other
Total
2004 1 ,381
2003 1 ,391
2002 1 ,336
2001 1 ,258
2000 1 ,243
Number of
FY MCL
2004 1 ,033
2003 1 ,029
2002 1 ,005
2001 921
2000 925
Population
FY MCL
2004 288,280
2003 266,522
2002 302,322
2001 359,556
2000 276,758
681
680
720
696
834
systems in violation
MRDL TT M/R
474
495
529
515
580
affected
MRDL TT M/R
130,242
140,053
165,522
222,120
216,701
TNCWS violations reported by FY
Number of violations
FY MCL MRDL TT M/R
2004 5,032
2003 5,082
2002 4,837
2001 4,596
2000 4,408
Number of
FY MCL
2004 3,974
2003 4,071
2002 3,858
2001 3,687
2000 3,632
Population
FY MCL
2004 549,673
2003 541 ,950
2002 504,967
2001 558,780
2000 506,759
415
573
626
677
309
systems in violation
MRDL TT M/R
195
245
249
256
177
affected
MRDL TT M/R
51,915
40,518
60,692
46,987
44,406
538
503
227
305
210
Other Total
356
317
155
213
169
Other Total
88,003
85,026
57,016
82,910
37,941
Other Total
3,028
8,640
2,339
1,467
915
Other Total
1,697
3,685
1,142
826
656
Other Total
234,291
340,950
137,795
118,847
78,759
* Totals for the number of systems in violation, and for population affected, should be lower than the sum in each row.
         This is because some systems will have incurred more than one type of violation.
FY2003 and 2004 compliance information includes new DBP and IESWTR rules

-------
FY2004 MCL,  MRDL and TT violations reported
From SDW1S/FED 04Q4 frozen violations table
Microbials:
 Very small    Small      Medium      Large
   25-500     501-3,300  3,301-10,0000,001-100,00
 Applies to all water systems
                                                            Very Large
                                                             >100,000
Total

TCR/T

7,629
5,939
658,437
942
754
965,775
268
241
1,434,325
242
194
4,335,013
18
11
3,989,416
9,099
7,139
11,382,966
              Applies to surface water systems that disinfect ( TNCWSs that use CIO2)

Stage 1 DBP

110
75
13,613
273
162
239,795
124
64
359,708
223
97
2,355,202
11
5
4,629,814
741
403
7,598,132
              Applies to surface water systems

SWTR

945
516
85,889
394
222
31 1 ,309
175
75
432,884
29
25
703,988
8
6
6,715,034
1,551
844
8,249,104
              Applies to surface water systems serving >=10K people

IESWTR

2
2
129
5
4
4,093
110
46
1 ,460,032
13
6
2,519,510
130
58
3,983,764
Organics:
Applies to CWS and NTNCWS
voc
soc
80
44
3,698
18
13
1,655
3
3
6,339
6
3
4,593
7
3
17,633
2
2
8,835
8
6
169,877
3
2
100,000
98
56
197,547
29
20
115,083
Inorganics:
Applies to CWS and NTNCWS
Nitrates
Arsenic
Other IOC
722
469
49,376
51
28
4,018
262
129
21,368
136
69
73,185
11
7
10,497
38
23
33,135
8
5
28,556
6
2
8,940
12
6
41,350
4
3
60,402
4
3
48,324
4
4
214,333
870
546
211,519
72
40
71,779
316
162
310,186
              Applies to CWS

Radionuclides

311
122
23,381
193
71
94,217
50
18
95,959
60
18
372,153
4
1
106,221
618
230
691,931
              Applies to CWS and NTNCWS

Lead & Copper

1,073
830
123,037
256
209
276,427
38
31
189,019
25
22
589,483
6
3
1,040,814
1,398
1,095
2,218,780
Acronyms:
TCR/T = Total Coliform Rule/Turbidity
SWTR = Surface Water Treatment Rule
IESWTR = Interim Enhanced Surface Water Treatment Rule
DBP = Disinfectants By-Products Rule
VOC = Regulated volatile organic contaminants (e.g., Benzene) other than TTHMs (which are listed in DBP Rule)
SOC = Synthetic organic chemicals (e.g., Atrazine)
Other IOC = Regulated inorganic contaminants (e.g., arsenic) other than Copper, Lead, Nitrate, and Nitrite

-------
FY2004 Monitoring violations  reported
From SDW1S/FED 04Q4 frozen violations table (except for Chem M/Rs)                    Key:
Chem M/R data will be from SDWIS/FED 05Q1 frozen violations table, which will be frozen in April
Microbials:
Very small    Small      Medium        Large
  25-500    501-3,300  3,301-10,000 10,001-100,000
Applies to all water systems
                                                                 Very Large
                                                                  >100,000
Total

TCR/T

30,311
17,851
1,819,497
2,915
1,767
2,167,938
383
289
1,637,496
233
166
4,754,595
20
18
7,955,803
33,862
20,091
18,335,329
              Applies to surface water systems that disinfect ( TNCWSs that use CIO2)
Stage 1 DBP
2,284 885
760 386
137,481 519,075
250 237 21
120 140 7
726,687 3,500,020 3,770,667
3,677
1,413
8,653,930
              Applies to surface water systems

SWTR

2,227
427
72,497
620
165
216,099
123
71
405,91 1
57
33
1,169,644
9
5
3,867,870
3,036
701
5,732,021
              Applies to surface water systems serving >=10K people
IESWTR
3 61 7
2 24 4
14,273 674,162 2,391,250
71
30
3,079,685
Organics: Applies to CWS and NTNCWS
voc
soc




Inorganics: Applies to CWS and NTNCWS
Nitrates
Arsenic
Other IOC






Applies to CWS
Radionuclides


              Applies to CWS and NTNCWS

Lead & Copper

9,773
6,667
921,199
1,857
1,297
1,606,104
331
254
1,429,897
193
138
3,689,863
21
14
7,468,972
12,175
8,370
15,116,035
Acronyms:
TCR/T = Total Coliform Rule/Turbidity
SWTR = Surface Water Treatment Rule
IESWTR = Interim Enhanced Surface Water Treatment Rule
DBP = Disinfectants By-Products Rule
VOC = Regulated volatile organic contaminants (e.g., Benzene) other than TTHMs (which are listed in DBP Rule)
SOC = Synthetic organic chemicals (e.g., Atrazine)
Other IOC = Regulated inorganic contaminants (e.g., arsenic) other than Copper, Lead, Nitrate, and Nitrite

-------
 Underground Injection  Control program-inventory of wells
Types of wells:
   Class I   Deep industrial waste disposal
   Class  II   For oil and natural gas production
  Class III   Related to mineral recovery
  Class IV   Banned, inject hazardous or radioactive waste above USDWs
   Class V   Generally shallow disposal wells. There are an estimated 650,000 Class V wells nationally

Class I through IV data from annual reporting by states and EPA Regions
The Class V estimate is based on state estimates and modeling of storm water and large capacity septics
             Class I   Class I non-
            hazardous  hazardous
           waste wells waste wells


Class II
wells

Class III
facilities
(which may
contain
multiple
wells)


Class III
wells

Class IV
facilities
(which may
contain
multiple
wells)
AK
AL
AR
AZ
CA
CO
FL
IA
IL
IN
KS
KY
LA
Ml
MO
MS
MT
ND
NE
NM
NV
NY
OH
OK
OR
PA
SD
TN
TX
UT
VA
WA
WV
WY
6

6 10

6
5
1 136

3 1
4 7
6 44
1
17 28
9 15

6 1

2
1
5

1
10 2
11

10


60 46

3


23
EPA R2 tribal
EPA R6 tribal) 1
EPA R8 tribal
EPA R9 tribal
925
347
1,078

24,955
787
64
1
8,949
1,340
16,371
3,429
3,824
1,459
211
881
897
377
704
5,577
12
503
2,890
11,448
2
1,897
63
14
51,998
256
252
1
700
4,666
12
2,674
723
542

1

3
1
2




5

15
3




1
19

6
3
1

1


86
1
1

3
12





3

15
73
35




157

67
22




1,879
104

126
47
1

10


5,789
4
3

31
8,211


























1






2
1


1




                  122
364    146,878
164
16,577

-------