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 I 1 I I I
>$25B S5-S25B $2.5-$5B $1-S2.5B
~
Did not participate
Washington
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 II
Advanced
,$529IVl
Category
Percent
Advanced Wastewater Treatment
Conveyance System Repair
iV New Conveyance Systems
V Combined Sewer Overflow Correction
VI Stormwater Management Program
X Recycled Water Distribution
Category V
Combined Sewer
Overflow
Correction
$1,272M, 31.2%
2012 Washington documented needs by category
(January 2012 dollars in millions).
I Secondary Wastewater Treatment
CWNS
Category VI
Stormwater Management
Program
$221M, 5.4%
Category IV
New Conveyance Systems
$405M, 9.9%
Category X
Recycled Water
Distribution
$163M,
Category I
Secondary
Wastewater Treatment
$738M, 18.1%
Wastewater
Treatment
13.0%
Category III
Conveyance
System Repair
$745M, 18.3%
Improvements in treatment level of Washington's publicly-owned wastewater treatment plants.

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

2032
Less than Secondary8
-(0)
-(0)
-d)
-d)
-
-
Secondary
3.7 (198)
4(76)
5.3 (202)
7.3 (200)
32.9%
38.6%
Greater than Secondary
1.1(7)
0.3 (3)
0.6(11)
0.6 (15)
92.6%
2.0%
No Discharge
<0.1(31)
< 0.1 (9)
<0.1 (33)
0.4 (36)
554.4%
424.7%
Partial Treatment
5 (3)
-(4)
-(0)
-(0)
-
-
Total
4.S (239)
4.3 (92)
5.9 (247)
8.3 (252)
38.4%
40.2%
a 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 Washington
needs for the
2004-2012 CWNS
by category
(January 2012
dollars in millions).
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