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Community Water System · PWS NH2421010

Glencliff Improvement

Glencliff, New Hampshire 03238 - drinking water served from groundwater sources to 30 people, tracked in EPA SDWIS and UCMR5.

30
People served
872
EPA violations
41
Health-based
Untested
UCMR5 result

The verdict

EPA records 872 drinking-water violations at Glencliff Improvement, 5% of them health-based - above the New Hampshire per-system average.

872
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
30
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Glencliff Improvement

Glencliff Improvement is a private-owned community water system that delivers drinking water to 30 residents in Glencliff, New Hampshire (Grafton County) through 13 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 872 total violations for this system , of which 41 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 784 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 111 violations (MR). 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%).

Glencliff Improvement's 872 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
30
Total Violations
872
Health-Based Violations
41
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
13
County
Grafton
School/Daycare
No
MCL Violations
17
Monitoring Violations
784
Treatment Tech Violations
24

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 111 2014
E. COLI MR 44 2023
Revised Total Coliform Rule RPT 28 2021
Revised Total Coliform Rule TT 20 2021
Nitrate MR 15 1996
1,2,4-Trichlorobenzene MR 15 1996
cis-1,2-Dichloroethylene MR 15 1996
Xylenes, Total MR 15 1996
DICHLOROMETHANE MR 15 1996
o-Dichlorobenzene MR 15 1996
Vinyl chloride MR 15 1996
1,1-Dichloroethylene MR 15 1996
1,1,2-Trichloroethane MR 15 1996
CHLOROBENZENE MR 15 1996
Benzene MR 15 1996
Toluene MR 15 1996
Styrene MR 15 1996
p-Dichlorobenzene MR 15 1996
1,2-Dichloroethane MR 15 1996
Carbon tetrachloride MR 15 1996
1,2-Dichloropropane MR 15 1996
Trichloroethylene MR 15 1996
Tetrachloroethylene MR 15 1996
trans-1,2-Dichloroethylene MR 15 1996
1,1,1-Trichloroethane MR 15 1996
Ethylbenzene MR 15 1996
Coliform (TCR) MCL 13 2000
Lead and Copper Rule MR 11 2024
Revised Total Coliform Rule MON 8 2021
Nitrite MR 7 1996

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 Glencliff Improvement.

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 NH2421010 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
2024 Lead and Copper Rule MR 11 SDWIS / NH2421010 / 5000
2023 E. COLI MR 44 SDWIS / NH2421010 / 3014
2023 Consumer Confidence Rule Other 6 SDWIS / NH2421010 / 7000
2021 Revised Total Coliform Rule RPT 28 SDWIS / NH2421010 / 8000
2021 Revised Total Coliform Rule TT 20 SDWIS / NH2421010 / 8000
2021 Revised Total Coliform Rule MON 8 SDWIS / NH2421010 / 8000
2021 Public Notice Other 6 SDWIS / NH2421010 / 7500
2018 Revised Total Coliform Rule MCL 4 SDWIS / NH2421010 / 8000
2016 Groundwater Rule TT 4 SDWIS / NH2421010 / 0700
2014 Coliform (TCR) MR 111 SDWIS / NH2421010 / 3100
2000 Coliform (TCR) MCL 13 SDWIS / NH2421010 / 3100
1996 Nitrate MR 15 SDWIS / NH2421010 / 1040
1996 1,2,4-Trichlorobenzene MR 15 SDWIS / NH2421010 / 2378
1996 cis-1,2-Dichloroethylene MR 15 SDWIS / NH2421010 / 2380
1996 Xylenes, Total MR 15 SDWIS / NH2421010 / 2955

How Glencliff Improvement Compares

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

Metric Glencliff Improvement New Hampshire avg Federal benchmark
Total violations 872 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 41 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 30 506 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 Glencliff Improvement water safe to drink? ▼
Glencliff Improvement (PWS ID: NH2421010) has 872 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 30 people using Groundwater sources.
How many people does Glencliff Improvement serve? ▼
Glencliff Improvement serves 30 people in Glencliff, New Hampshire. It is a Private-owned system using Groundwater water sources with 13 service connections.
What type of violations does Glencliff Improvement have? ▼
Glencliff Improvement has 872 total violations: 41 health-based violations (MCL exceedances or treatment failures), 784 monitoring/reporting violations, and 24 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Glencliff Improvement water? ▼
No PFAS testing data is available for Glencliff Improvement under the EPA's UCMR5 monitoring program.
What water source does Glencliff Improvement use? ▼
Glencliff Improvement 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.