New Hampshire
Clean Watersheds Needs Survey 2008
The Clean Watersheds Needs
Survey (CWNS) is a comprehensive
assessment of needs1 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). New Hampshire
documented needs totaling $1.3 billion
in 2008. This is an 82 percent increase
from the $685 million in needs
documented in 2004.
Documented Needs in New Hampshire
Needs (2008 Dollars, Millions)
Type of Need
2004
2008
Percent Change
Wastewater treatment
$200
$536
168%
Pipe repair and new pipes
$166
$367
121%
Recycled water distribution
nra
nr
0%
Combined sewer overflow correction
$309
$281
-9%
Total Wastewater Treatment Needs
$675
$1,184
75%
Conveyance infrastructure
n/a
$51
n/a
Treatment systems
n/a
$10
n/a
Green infrastructure
n/a
$2
n/a
General stormwater management
nr
$2
n/a
Total Stormwater Management Needsb
nr
$65
n/a
Agriculture (cropland) best management practices (BMPs)
nr
nr
0%
Agriculture (animals) BMPs
nr
nr
0%
Silviculture (forestry) BMPs
nr
nr
0%
Ground water protection: unknown source BMPs
nr
nr
0%
Marinas BMPs
nr
nr
0%
Resource extraction BMPs
nr
nr
0%
Brownfields remediation
nr
nr
0%
Storage tank remediation
nr
nr
0%
Sanitary landfills BMPs
$9
$1
-89%
Hydromodification (Water resource restoration and protection)
nr
nr
0%
Other estuary management activities0
n/a
nr
n/a
Total Nonpoint Source Control Needsb'd
$9
$1
-89%
Total Decentralized Wastewater Treatment Needsb'd
$1
nr
-100%.
Total Needs
$685
$1,250
82%.
aNot reported; bActual needs may be higher, since documenting these needs is difficult; cIn 2004, Other Estuary Management
Needs were reported under Separate State Estimates (SSEs); dNot included in Official Needs in the Report to Congress.
County Needs ($M)
None reported
<80
1 Documented needs in the CWNS include the unfunded capital costs of projects as of January 1, 2008 that address a water
quality or a water quality-related public health problem existing as of January 1, 2008, or expected to occur within the next 20
years; and meet the seven CWNS documentation criteria. All needs are in January 2008 dollars.

-------
New Hampshire
Clean Watersheds Needs Survey 2008
Wastewater Treatment Facilities
The enactment of the Clean Water Act (CWA) in 1972 resulted in dramatic improvements in the:
•	Number of wastewater treatment plants.
•	Percentage of the population served by wastewater treatment plants.
•	Quality of effluent treatment from wastewater treatment facilities.
In 2008, 49% of New Hampshire residents received centralized wastewater treatment services at the
secondary, advanced, or no discharge treatment level, compared to 10% in 1972.
Number of Centralized Treatment Facilities and Population Served
Number of Facilities
Population Served
%Total	%Total
Population	Population
Treatment Level
1972
2008
Projected"
1972
1972
2008
2008
Projected3
Less than Secondary
14
1
0
143,000
18
20,617
2
0
Secondary
26
69
62
83,000
10
619,585
47
664,473
Advanced
5
3
11
2,000
<1
11,782
1
104,871
No Discharge
0
13
13
0
0
9,159
1
11,452
Total
45
86
86
228,000
28
661,143
50
780,796
a Number of facilities and population served if all needs documented in the CWNS 2008 are met.
Small Communities
In New Hampshire, small community
wastewater facilities serve 20% of the
population and comprise 22% of total
wastewater treatment and collection
needs. EPA small community support
information is available at:
www. epa. gov/owm/mab/smcomm
Reported Needs for Facilities in Small Communities
Facilities

1 Needs (2008 Dollars, Millions)
Population
2004
2008
2004
2008
0-999
6
12
$4
$26
1,000-3,499
8
22
$12
$126
3,500-10,000
17
14
$73
$104
Total
31
48
$89
$256
Visit www.epa.gov/cwns for more information including:
•	Detailed Reports to Congress
•	Other state fact sheets
•	Maps, charts, and data downloads for projects, facilities, watersheds, counties, congressional
districts, cities, states, and regions

-------