Clean Watersheds Needs Survey 2012
Distribution of total official needs by State
(January 2012 dollars in billions)
Total documented needs = $271.0 Billion
Range	I 1 I 1 I 1 1 1 I 1
>$25B $5-$25B $2.5-$5B $1-$2.5B <$1B Did not participate
Wisconsin
The Clean Watersheds Needs Survey (CWNS) is a
comprehensive assessment of needs to meet the water
quality and water-related public health goals of the Clean
Water Act (CWA). States and the U.S. Environmental
Protection Agency (EPA) conduct the CWNS every four
years under CWA Section 516 (b).
Visit www.epa.gov/CWNS for more information.
Category I
Secondary Wastewater Treatment
$1,8531V!, 29.3%
Category VI
Stormwater
Management
Program
$560M, 8.8%
Category V
Combined Sewer
Overflow
Correction
$5M,<1%
Category IV
New Conveyance
Systems
$896M. 14.2%
Category I
Conveyance System Repair
$1,589M, 25.1%
CWNS 2012 Wisconsin documented needs by category
(January 2012 dollars in millions).
Category II
Advanced
Wastewater
Treatment
$1,426M, 22.5%
Category
$M
Percent
1 Secondary Wastewater Treatment
1,853
29.3
il Advanced Wastewater Treatment
1,426
22.5
iii Conveyance System Repair
1,589
25.1
IV New Conveyance Systems
896
14.2
V Combined Sewer Overflow Correction
5
<1
Vi Stormwater Management Program
560
8.8
X Recycled Water Distribution
nr
nr
Total
6,329
100.0
Improvements in treatment level of Wisconsin's publicly-owned wastewater treatment plants.

Population served in millions (number of facilities)
Population change
from 2008-2012
Projected
population change
front 2012-2032
Level of treatment
2004
2008
2012

2032
Lessthan Secondary3
-(0)
-(0)
-(0)
-(0)
-
-
Secondary
0.7 (292)
0.2 (193)
0.2 (188)
<0.1 (38)
14.4%
-71.1%
Greater than Secondary
3.5 (265)
4 (308)
4 (310)
4.8 (464)
1.5%
18.8%
No Discharge
<0.1(37)
< 0.1 (90)
<0.1 (94)
0.1 (111)
5.1%
25.5%
Partial Treatment
-hi
-(0)
-(0)
-(0)
-
-
Total
4.2 (595)
4.3 (591)
4.3 (592)
5 (613)
2.1%
14.3%
! Includes facilities granted section 301(h) waivers from secondary treatment for discharges to marine waters. As of January 1, 2012 waivers for 36 facilities in the CWNS 2012 database had been
granted or were pending.
Total Wisconsin
needs for the
2004-2012 CWNS
by category
(January 2012
dollars in millions).
2004
CZ12008
~ 2012
Needs Category

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