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Community Water System · PWS NH0151010

Swains Lake Village Water

Barrington, New Hampshire 03825 - drinking water served from groundwater sources to 227 people, tracked in EPA SDWIS and UCMR5.

227
People served
353
EPA violations
146
Health-based
Untested
UCMR5 result

The verdict

EPA records 353 drinking-water violations at Swains Lake Village Water, 41% of them health-based - above the New Hampshire per-system average.

353
Total EPA violations on record
41%
Health-based (MCL / treatment failure)
227
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Swains Lake Village Water

Swains Lake Village Water is a local-owned community water system that delivers drinking water to 227 residents in Barrington, New Hampshire (Strafford County) through 92 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 353 total violations for this system , of which 146 (41%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 192 monitoring and reporting violations are on file. The most recent violation on record dates to 2012.

The most frequently cited contaminant at this system is TTHM, recorded in 67 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across New Hampshire, EPA tracks 2,453 public water systems serving 1,242,123 people, with 155,970 cumulative violations and 29,649 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 63.6 violations. Statewide, 23 of 51 UCMR5-tested systems have reported PFAS detections (45.1%).

Swains Lake Village Water's 353 violations sit above the New Hampshire average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
227
Total Violations
353
Health-Based Violations
146
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
92
County
Strafford
School/Daycare
No
MCL Violations
124
Monitoring Violations
192
Treatment Tech Violations
22

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 67 2012
Total Haloacetic Acids (HAA5) MCL 57 2012
Surface Water Treatment Rule TT 22 1999
Consumer Confidence Rule Other 10 2012
Hexachlorocyclopentadiene MR 8 2007
Coliform (TCR) MR 6 2006
Public Notice Other 5 2009
Nitrate MR 4 1997
BHC-GAMMA MR 4 1997
Methoxychlor MR 4 1997
DICHLOROMETHANE MR 4 1997
Toxaphene MR 4 1997
OXAMYL MR 4 1997
1,1-Dichloroethylene MR 4 1997
Di(2-ethylhexyl) phthalate MR 4 1997
1,2-Dichloroethane MR 4 1997
1,1,1-Trichloroethane MR 4 1997
Dinoseb MR 4 1997
Trichloroethylene MR 4 1997
Atrazine MR 4 1997
1,1,2-Trichloroethane MR 4 1997
Tetrachloroethylene MR 4 1997
Heptachlor MR 4 1997
Benzene MR 4 1997
Toluene MR 4 1997
2,4,5-TP MR 4 1997
Ethylbenzene MR 4 1997
Styrene MR 4 1997
Chlordane MR 4 1997
Benzo(a)pyrene MR 4 1997

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Swains Lake Village Water.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NH0151010 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New Hampshire Drinking Water Authority

New Hampshire's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find NH regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2012 TTHM MCL 67 SDWIS / NH0151010 / 2950
2012 Total Haloacetic Acids (HAA5) MCL 57 SDWIS / NH0151010 / 2456
2012 Consumer Confidence Rule Other 10 SDWIS / NH0151010 / 7000
2010 Surface Water Treatment Rule MR 2 SDWIS / NH0151010 / 0200
2009 Public Notice Other 5 SDWIS / NH0151010 / 7500
2007 Hexachlorocyclopentadiene MR 8 SDWIS / NH0151010 / 2042
2006 Coliform (TCR) MR 6 SDWIS / NH0151010 / 3100
1999 Surface Water Treatment Rule TT 22 SDWIS / NH0151010 / 0200
1997 Nitrate MR 4 SDWIS / NH0151010 / 1040
1997 BHC-GAMMA MR 4 SDWIS / NH0151010 / 2010
1997 Methoxychlor MR 4 SDWIS / NH0151010 / 2015
1997 DICHLOROMETHANE MR 4 SDWIS / NH0151010 / 2964
1997 Toxaphene MR 4 SDWIS / NH0151010 / 2020
1997 OXAMYL MR 4 SDWIS / NH0151010 / 2036
1997 1,1-Dichloroethylene MR 4 SDWIS / NH0151010 / 2977

How Swains Lake Village Water Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Swains Lake Village Water New Hampshire avg Federal benchmark
Total violations 353 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 146 12.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 45.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 227 506 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,453 regulated public water systems in New Hampshire.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Swains Lake Village Water water safe to drink? ▼
Swains Lake Village Water (PWS ID: NH0151010) has 353 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 227 people using Groundwater sources.
How many people does Swains Lake Village Water serve? ▼
Swains Lake Village Water serves 227 people in Barrington, New Hampshire. It is a Local-owned system using Groundwater water sources with 92 service connections.
What type of violations does Swains Lake Village Water have? ▼
Swains Lake Village Water has 353 total violations: 146 health-based violations (MCL exceedances or treatment failures), 192 monitoring/reporting violations, and 22 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Swains Lake Village Water water? ▼
No PFAS testing data is available for Swains Lake Village Water under the EPA's UCMR5 monitoring program.
What water source does Swains Lake Village Water use? ▼
Swains Lake Village Water uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.