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Community Water System · PWS NH2342110

Mill Brook Village

Moultonborough, New Hampshire 03254 - drinking water served from groundwater sources to 110 people, tracked in EPA SDWIS and UCMR5.

110
People served
71
EPA violations
42
Health-based
Untested
UCMR5 result

The verdict

EPA records 71 drinking-water violations at Mill Brook Village, 59% of them health-based - above the New Hampshire per-system average.

71
Total EPA violations on record
59%
Health-based (MCL / treatment failure)
110
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mill Brook Village

Mill Brook Village is a private-owned community water system that delivers drinking water to 110 residents in Moultonborough, New Hampshire (Grafton County) through 44 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 71 total violations for this system , of which 42 (59%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 25 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Combined Uranium, recorded in 28 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, 18 of 51 UCMR5-tested systems have reported PFAS detections (35.3%).

Mill Brook Village's 71 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
110
Total Violations
71
Health-Based Violations
42
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
44
County
Grafton
School/Daycare
No
MCL Violations
42
Monitoring Violations
25
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MCL 28 2018
Coliform (TCR) MCL 14 2009
Nitrate MR 5 1997
Combined Radium (-226 and -228) MR 4 2004
Lead and Copper Rule MR 4 2020
E. COLI MR 4 2018
Gross Alpha, Excl. Radon and U MR 4 2004
Coliform (TCR) MR 4 2009
Consumer Confidence Rule Other 2 2009
Public Notice Other 2 2015

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 Mill Brook Village.

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 NH2342110 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
2020 Lead and Copper Rule MR 4 SDWIS / NH2342110 / 5000
2018 Combined Uranium MCL 28 SDWIS / NH2342110 / 4006
2018 E. COLI MR 4 SDWIS / NH2342110 / 3014
2015 Public Notice Other 2 SDWIS / NH2342110 / 7500
2009 Coliform (TCR) MCL 14 SDWIS / NH2342110 / 3100
2009 Coliform (TCR) MR 4 SDWIS / NH2342110 / 3100
2009 Consumer Confidence Rule Other 2 SDWIS / NH2342110 / 7000
2004 Combined Radium (-226 and -228) MR 4 SDWIS / NH2342110 / 4010
2004 Gross Alpha, Excl. Radon and U MR 4 SDWIS / NH2342110 / 4000
1997 Nitrate MR 5 SDWIS / NH2342110 / 1040

How Mill Brook Village Compares

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

Metric Mill Brook Village New Hampshire avg Federal benchmark
Total violations 71 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 42 12.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 35.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 110 506 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 Mill Brook Village water safe to drink? ▼
Mill Brook Village (PWS ID: NH2342110) has 71 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 110 people using Groundwater sources.
How many people does Mill Brook Village serve? ▼
Mill Brook Village serves 110 people in Moultonborough, New Hampshire. It is a Private-owned system using Groundwater water sources with 44 service connections.
What type of violations does Mill Brook Village have? ▼
Mill Brook Village has 71 total violations: 42 health-based violations (MCL exceedances or treatment failures), 25 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mill Brook Village water? ▼
No PFAS testing data is available for Mill Brook Village under the EPA's UCMR5 monitoring program.
What water source does Mill Brook Village use? ▼
Mill Brook Village 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.