PlainEnviro

Nashua Water Quality

New Hampshire

Health Violations

According to EPA SDWIS, Nashua, New Hampshire is served by 73 community water systems covering about 131,406 people. The same extract lists 54 health-based violation records, most recently coded 8000 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.

73
Water Systems
131,406
Population Served
54
Health-Based Violation Records
6
Distinct Contaminant Codes

Drinking water in Nashua, New Hampshire is delivered through 73 EPA-regulated community water systems serving an estimated 131,406 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.

PlainEnviro's health-based SDWIS extract shows 54 violation records across the 73 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: Revised Total Coliform Rule, Combined Uranium, Antimony, Total, Groundwater Rule, Arsenic and 1 others. 14 TRI-reporting industrial facilities are also located within the city limits.

A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. 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 88,853 0 Clean
LITCHFIELD 6,920 0 Clean
LONDONDERRY 6,255 0 Clean
PENACOOK BOSCAWEN WATER PCT 3,800 0 Clean
LITTLE POND ESTATES 3,000 0 Clean
LOCKE LAKE 2,308 8 Health
PITTSFIELD AQUEDUCT 1,625 0 Clean
BELMONT WATER DEPT 1,612 0 Clean
DREW WOODS 1,413 0 Clean
POWDER HILL 1,148 0 Clean
CABOT PRESERVE 965 0 Clean
WILLIAMSBURG 910 0 Clean
BROOK PARK ESTS 880 0 Clean
GREEN HILLS ESTS 618 0 Clean
BIRCH HILL EAST 560 0 Clean
W AND E 528 0 Clean
MAPLE HILL ACRES 500 0 Clean
WHISPERING WINDS 488 0 Clean
BADGER HILL 455 0 Clean
AVERY ESTATES 383 0 Clean
TWIN RIDGE CONDOS 348 0 Clean
GOLDEN BROOK 328 0 Clean
OAKWOOD TERRACE 310 0 Clean
MINISTERIAL/PARRISH HILLS 305 0 Clean
VILLAGES AT STOW 300 0 Clean
SOUHEGAN WOODS 298 0 Clean
GLEN RIDGE DEV 263 0 Clean
MAPLE HAVEN 258 0 Clean
SUNRISE ESTATES 235 3 Health
SPRINGWOOD HILLS 228 0 Clean
GREAT BAY WATER SYSTEM 228 0 Clean
HUDSON MOBILE HOME ESTS 220 2 Health
WESCO UTILITIES 210 1 Health
WOODLANDS 203 0 Clean
VALLEY FIELD APTS NORTHLAND 200 0 Clean
AUTUMN WOODS 193 0 Clean
LIBERTY TREE ACRES 190 0 Clean
HARVEST VILLAGE 185 0 Clean
MOUNTAINSIDE AT CROTCHED MTN 180 1 Health
CLEARWATER ESTATES 173 0 Clean
LAMPLIGHTER VILLAGE 173 0 Clean
SMYTHE WOODS 168 0 Clean
SKY VIEW ESTATES 168 0 Clean
BELMONT WATER DEPT/NORTH 150 0 Clean
HI AND LO ESTATES 150 0 Clean
FOREST RIDGE 140 1 Health
FLETCHER CORNER ESTATES 140 0 Clean
MEADOWBROOK ACRES MOBILE HOME PARK 137 0 Clean
WINNISQUAM VILLAGE CONDOS 133 0 Clean
SPRUCE POND ESTS 133 0 Clean
WHITE ROCK SENIOR LIVING 120 0 Clean
HARDWOOD HTS BIRCH HILL 120 0 Clean
STONE SLED FARM 113 0 Clean
WOOD MEADOW ESTATES 113 3 Health
CASTLE REACH 110 6 Health
PINEHAVEN WATER TRUST 95 0 Clean
FARMSTEAD ACRES 93 0 Clean
NORTHERN SHORES 93 0 Clean
THURSTON WOODS 90 0 Clean
SHAKER HEIGHTS 88 0 Clean
FARLEY RD ESTATES 85 1 Health
SWEET HILL ESTATES 85 2 Health
DANIELS LAKE 78 1 Health
ASHLEY COMMONS 75 0 Clean
GAGE HILL 73 0 Clean
CROSS RIDGE ESTATES 73 0 Clean
HILLCREST MANOR APTS 65 1 Health
ENGLISH WOODS 58 0 Clean
THE DOX CONDOS 55 11 Health
CASTLETON MEADOWS 50 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?

These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.

Water system Contaminant Begin Date
SUNRISE ESTATES Revised Total Coliform Rule 2024-10-11
SUNRISE ESTATES Revised Total Coliform Rule 2024-10-11
SUNRISE ESTATES Revised Total Coliform Rule 2024-10-11
THE DOX CONDOS Combined Uranium 2024-07-01
THE DOX CONDOS Combined Uranium 2024-07-01
THE DOX CONDOS Combined Uranium 2024-07-01
THE DOX CONDOS Combined Uranium 2024-07-01
THE DOX CONDOS Combined Uranium 2024-04-01
THE DOX CONDOS Combined Uranium 2024-04-01
THE DOX CONDOS Combined Uranium 2024-04-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2024-01-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2024-01-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-10-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-10-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-10-01
THE DOX CONDOS Combined Uranium 2023-07-01
THE DOX CONDOS Combined Uranium 2023-07-01
THE DOX CONDOS Combined Uranium 2023-07-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-07-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-07-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-07-01
HOLLIS VILLAGE MARKETPLACE Antimony, Total 2023-07-01
HOLLIS VILLAGE MARKETPLACE Groundwater Rule 2023-04-16
THE DOX CONDOS Combined Uranium 2023-04-01
CASTLE REACH Revised Total Coliform Rule 2021-09-01
CASTLE REACH Revised Total Coliform Rule 2021-09-01
CASTLE REACH Revised Total Coliform Rule 2021-09-01
HILLCREST MANOR APTS Revised Total Coliform Rule 2020-07-01
HOLLIS VILLAGE MARKETPLACE Revised Total Coliform Rule 2020-01-16
WOOD MEADOW ESTATES Arsenic 2019-07-01
WOOD MEADOW ESTATES Arsenic 2019-07-01
WOOD MEADOW ESTATES Arsenic 2019-07-01
CASTLE REACH Arsenic 2018-10-11
CASTLE REACH Arsenic 2018-10-11
CASTLE REACH Arsenic 2018-10-11
SWEET HILL ESTATES Arsenic 2018-07-01
SWEET HILL ESTATES Arsenic 2018-07-01
LOCKE LAKE Arsenic 2018-04-01
LOCKE LAKE Arsenic 2018-04-01
LOCKE LAKE Arsenic 2018-04-01
LOCKE LAKE Arsenic 2018-04-01
LOCKE LAKE Arsenic 2018-01-01
LOCKE LAKE Arsenic 2018-01-01
LOCKE LAKE Arsenic 2018-01-01
LOCKE LAKE Arsenic 2018-01-01
HOLLIS VILLAGE MARKETPLACE Revised Total Coliform Rule 2016-09-01
FOREST RIDGE Revised Total Coliform Rule 2016-08-01
FARLEY RD ESTATES Arsenic 2016-01-01
HUDSON MOBILE HOME ESTS Arsenic 2015-10-01
HUDSON MOBILE HOME ESTS Arsenic 2015-07-01

What are Nashua's health-based records for?

Nashua's health-based violation records carry 6 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.

Contaminant Records Systems
Arsenic 19 6
Combined Uranium 11 1
Revised Total Coliform Rule 10 5
Antimony, Total 9 1
Groundwater Rule 3 2
Lead and Copper Rule 2 2

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

What does EPA SDWIS list for drinking water in Nashua, New Hampshire? ▼
Nashua is listed with 73 EPA-regulated water systems covering approximately 131,406 people. 54 health-based violation records appear in the extract. A past registry row is not a current drinkability verdict; contact the local utility for current status.
How many water violations does Nashua have in this EPA extract? ▼
Nashua water systems have 54 health-based violation records in PlainEnviro's EPA SDWIS extract. This extract is filtered to EPA health-based records and does not include monitoring or reporting violations.
What contaminants were found in Nashua water? ▼
Health-based records for Nashua water systems carry the following EPA contaminant codes: Revised Total Coliform Rule, Combined Uranium, Antimony, Total, Groundwater Rule, Arsenic and 1 others. This source edition does not include authoritative contaminant names. Source: EPA SDWIS.
How many water systems serve Nashua? ▼
73 EPA-regulated community water systems serve Nashua, New Hampshire, collectively covering approximately 131,406 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, 14 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.

How does Nashua compare in New Hampshire?

Of the 179 New Hampshire places with at least one community water system on file, Nashua ranks #1 by number of systems (73).

Either side of it: Atkinson (30), Moultonborough (27)

About This Data

Figures here are the current EPA SDWIS extract joined to the 73 community water systems whose service area lists Nashua, ranked against the 179 New Hampshire places with at least one system on file. Data current as of 2026-08-25.

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

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