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
Louisiana
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.
System
Category
Percent
I Secondary Wastewater Treatment
Advanced Wastewater Treatment
Conveyance System Repair
iV New Conveyance Systems
V Combined Sewer Overflow Correction
VI Stormwater Management Program
X Recycled Water Distribution
Category II
Advanced
Treatment
$109M, 2.4%
Category III
$1.460M. 32.7%
Category I
Secondary Wastewater Treatment
$1,6571V!, 37.1%
CWNS 2012 Louisiana documented needs by category
(January 2012 dollars in millions).
Category VI
Stormwater
Management
Program
$160M, 3.6%
Category
New Conveyance
Systems
$1,075M, 24.1%
ra
Category X
Recycled Water
Distribution
$2!VI, <1%
Improvements in treatment level of Louisiana's publicly-owned wastewater treatment plants.

Population served in millions (number of facilities)

Projected
Level of treatment
2004
2008
2012
2032
from 2008-2012
from 2012-2032
Less than Secondary3
-(0)
<0.1 (1)
<0.1 (1)
<0.1 (1)
124.4%
13.5%
Secondary
2.2 (173)
2.1 (68)
2.5 (123)
2.8(131)
18.2%
14.6%
Greater than Secondary
1.0(173)
0.6 (97)
1.0 (144)
1.3(153)
68.4%
33.9%
No Discharge
<0.1(1)
-(0)
<0.1 (1)
0.4 (4)
-
184788.9%
Partial Treatment
-(6)
-(0)
-(0)
-(0)
-
-
Total
3.2 (353)
2.7 (166)
3.5 (269)
4.6 (289)
29.2%
31.2%
5 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 Louisiana
needs for the
2004-2012 CWNS
by category
(January 2012
dollars in millions).
O
a
2004
nU 2008
~ 2012
Needs Category

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