PlainEnviro

Nashua Water Quality

New Hampshire

Health Violations

The tap water in Nashua, New Hampshire is served by 73 EPA-regulated water systems covering approximately 130,571 people. 44 health-based violations are on record, most recently for 8000 in 2024. Data source: EPA Safe Drinking Water Information System.

73
Water Systems
130,571
Population Served
44
Total Violations
44
Health-Based Violations

Drinking water in Nashua, New Hampshire is delivered through 73 EPA-regulated community water systems serving an estimated 130,571 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

The SDWIS record for Nashua shows 44 total violations across all 73 systems, of which 44 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 8000, 1074, 0700, 1005, 2456 and 1 others. 13 TRI-reporting industrial facilities are also located within the city limits.

A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the New Hampshire drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
PENNICHUCK WATER WORKS 89,073 0 Clean
LITCHFIELD 7,000 0 Clean
LONDONDERRY 5,380 0 Clean
PENACOOK BOSCAWEN WATER PCT 3,800 0 Clean
LITTLE POND ESTATES 3,000 0 Clean
LOCKE LAKE 2,278 8 Health
PITTSFIELD AQUEDUCT 1,630 0 Clean
BELMONT WATER DEPT 1,612 0 Clean
DREW WOODS 1,408 0 Clean
POWDER HILL 1,155 0 Clean
WILLIAMSBURG 928 0 Clean
CABOT PRESERVE 878 0 Clean
BROOK PARK ESTS 875 0 Clean
GREEN HILLS ESTS 620 0 Clean
BIRCH HILL EAST 550 0 Clean
W AND E 525 0 Clean
MAPLE HILL ACRES 523 0 Clean
WHISPERING WINDS 460 0 Clean
BADGER HILL 438 0 Clean
AVERY ESTATES 380 0 Clean
TWIN RIDGE CONDOS 348 0 Clean
GOLDEN BROOK 323 0 Clean
OAKWOOD TERRACE 307 0 Clean
VILLAGES AT STOW 300 0 Clean
MINISTERIAL/PARRISH HILLS 298 0 Clean
SOUHEGAN WOODS 293 0 Clean
GLEN RIDGE DEV 253 0 Clean
MAPLE HAVEN 250 0 Clean
SPRINGWOOD HILLS 225 0 Clean
SUNRISE ESTATES 225 2 Health
HUDSON MOBILE HOME ESTS 220 2 Health
GREAT BAY WATER SYSTEM 218 0 Clean
WESCO UTILITIES 200 1 Health
WOODLANDS 198 0 Clean
VALLEY FIELD APTS NORTHLAND 188 0 Clean
LIBERTY TREE ACRES 183 0 Clean
MOUNTAINSIDE AT CROTCHED MTN 180 1 Health
AUTUMN WOODS 180 0 Clean
FOREST VIEW ESTATES 180 0 Clean
HARVEST VILLAGE 175 0 Clean
SMYTHE WOODS 165 0 Clean
CLEARWATER ESTATES 163 0 Clean
LAMPLIGHTER VILLAGE 162 0 Clean
SKY VIEW ESTATES 158 0 Clean
BELMONT WATER DEPT/NORTH 150 0 Clean
HI AND LO ESTATES 143 0 Clean
MEADOWBROOK ACRES MOBILE HOME PARK 137 0 Clean
FLETCHER CORNER ESTATES 133 0 Clean
FOREST RIDGE 130 1 Health
WINNISQUAM VILLAGE CONDOS 125 0 Clean
SPRUCE POND ESTS 118 0 Clean
CROTCHED MOUNTAIN MNTNC 115 2 Health
CASTLE REACH 115 6 Health
WHITE ROCK SENIOR LIVING 110 0 Clean
STONE SLED FARM 105 0 Clean
HARDWOOD HTS BIRCH HILL 100 0 Clean
WOOD MEADOW ESTATES 98 3 Health
FARMSTEAD ACRES 90 0 Clean
PINEHAVEN WATER TRUST 88 0 Clean
NORTHERN SHORES 88 0 Clean
THURSTON WOODS 85 0 Clean
SHAKER HEIGHTS 83 0 Clean
FARLEY RD ESTATES 75 1 Health
SWEET HILL ESTATES 75 2 Health
ASHLEY COMMONS 73 0 Clean
CROSS RIDGE ESTATES 73 0 Clean
GAGE HILL 70 0 Clean
DANIELS LAKE 68 1 Health
HILLCREST MANOR APTS 65 1 Health
ENGLISH WOODS 48 0 Clean
BRIARWOOD TOWNHOMES 40 0 Clean
HOLLIS VILLAGE MARKETPLACE 36 13 Health
BEAVER HOLLOW 30 0 Clean

Does this city have health-based water violations?

Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.

Contaminant Begin Date
8000 2024-10-11
8000 2024-10-11
1074 2024-01-01
1074 2024-01-01
1074 2023-10-01
1074 2023-10-01
1074 2023-10-01
1074 2023-07-01
1074 2023-07-01
1074 2023-07-01
1074 2023-07-01
0700 2023-04-16
8000 2021-09-01
8000 2021-09-01
8000 2021-09-01
8000 2020-07-01
8000 2020-01-16
1005 2019-07-01
1005 2019-07-01
1005 2019-07-01
1005 2018-10-11
1005 2018-10-11
1005 2018-10-11
1005 2018-07-01
1005 2018-07-01
1005 2018-04-01
1005 2018-04-01
1005 2018-04-01
1005 2018-04-01
1005 2018-01-01
1005 2018-01-01
1005 2018-01-01
1005 2018-01-01
8000 2016-09-01
8000 2016-08-01
2456 2016-07-01
1005 2016-01-01
1005 2015-10-01
1005 2015-07-01
0700 2014-10-02
0700 2014-09-22
0700 2013-03-14
5000 2007-10-01
5000 1994-01-01

TRI Facilities in Nashua

Facility Total Releases
Worthen Industries 58.4K lbs
Bae Systems Information & Electronic Systems Integration 27.0K lbs
Amphenol Apc Inc 24.4K lbs
Worthen Industries Inc Upaco Div 10.6K lbs
Infinitum Electric Inc. 10.1K lbs
Harcros Chemicals Inc 1.2K lbs
Benchmark Electronics Nh Div 171 lbs
Bronze Craft Corp 120 lbs
Proto Labs Inc 50 lbs
Proto Labs Inc. 30 lbs

Frequently Asked Questions

Is Nashua, New Hampshire water safe to drink? ▼
Nashua is served by 73 EPA-regulated water systems covering approximately 130,571 people. 44 health-based violations have been recorded. A past violation does not necessarily mean water is currently unsafe, systems are required to notify customers and resolve issues. Contact your local water utility for current status.
How many water violations does Nashua have? ▼
Nashua water systems have a total of 44 violations on record in the EPA Safe Drinking Water Information System, of which 44 are health-based (MCL exceedances). The remaining violations are monitoring or reporting violations.
What contaminants were found in Nashua water? ▼
Health-based violations for Nashua water systems include the following contaminants: 8000, 1074, 0700, 1005, 2456 and 1 others. Source: EPA Safe Drinking Water Information System (SDWIS).
How many water systems serve Nashua? ▼
73 EPA-regulated community water systems serve Nashua, New Hampshire, collectively covering approximately 130,571 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Nashua get its drinking water? ▼
Nashua's water supply comes from 73 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.
Are there pollution sources near Nashua? ▼
Yes, 13 EPA Toxic Release Inventory (TRI) facilities are registered in Nashua, New Hampshire, reporting a combined 132.1K lbs of toxic chemical releases. TRI data reflects self-reported emissions; it does not measure exposure or health effects. Source: EPA TRI.

Related Guides

Understanding Water Quality Violations
What MCL violations mean and how to read EPA data
How to Check Environmental Quality
Step-by-step guide to checking your local environment
Understanding EPA Data
How EPA collects and publishes environmental data

About This Data

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.

A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro Editorial