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STANYAN ROAD

PWS ID: NH1612270 · DERRY, New Hampshire 03038

STANYAN ROAD serves 113 people in DERRY, New Hampshire using Groundwater water sources. It has 587 recorded EPA violations, including 36 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: STANYAN ROAD

STANYAN ROAD is a private-owned community water system that delivers drinking water to 113 residents in DERRY, New Hampshire (Carroll County) through 45 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 587 total violations for this system , of which 36 (6%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 542 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 Coliform (TCR), recorded in 32 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. STANYAN ROAD's 587 violations sit above the New Hampshire average. Statewide, 23 of 51 UCMR5-tested systems have reported PFAS detections (45.1%). 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
113
Total Violations
587
Health-Based Violations
36
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
45
County
Carroll
School/Daycare
No
MCL Violations
32
Monitoring Violations
542
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 32 2012
1,2,4-Trichlorobenzene MR 25 1995
cis-1,2-Dichloroethylene MR 25 1995
Xylenes, Total MR 25 1995
DICHLOROMETHANE MR 25 1995
o-Dichlorobenzene MR 25 1995
p-Dichlorobenzene MR 25 1995
Vinyl chloride MR 25 1995
1,1-Dichloroethylene MR 25 1995
trans-1,2-Dichloroethylene MR 25 1995
1,2-Dichloroethane MR 25 1995
1,1,1-Trichloroethane MR 25 1995
Carbon tetrachloride MR 25 1995
1,2-Dichloropropane MR 25 1995
1,1,2-Trichloroethane MR 25 1995
Tetrachloroethylene MR 25 1995
CHLOROBENZENE MR 25 1995
Benzene MR 25 1995
Toluene MR 25 1995
Styrene MR 25 1995
Trichloroethylene MR 25 1995
Ethylbenzene MR 25 1995
Nitrate MR 7 2010
E. COLI MR 4 2010
Coliform (TCR) MR 4 2010
Consumer Confidence Rule Other 4 2020
Revised Total Coliform Rule TT 4 2016
Revised Total Coliform Rule RPT 4 2016
Lead and Copper Rule MR 2 2012

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 STANYAN ROAD.

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 NH1612270 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 Consumer Confidence Rule Other 4 SDWIS / NH1612270 / 7000
2016 Revised Total Coliform Rule TT 4 SDWIS / NH1612270 / 8000
2016 Revised Total Coliform Rule RPT 4 SDWIS / NH1612270 / 8000
2012 Coliform (TCR) MCL 32 SDWIS / NH1612270 / 3100
2012 Lead and Copper Rule MR 2 SDWIS / NH1612270 / 5000
2010 Nitrate MR 7 SDWIS / NH1612270 / 1040
2010 E. COLI MR 4 SDWIS / NH1612270 / 3014
2010 Coliform (TCR) MR 4 SDWIS / NH1612270 / 3100
1995 1,2,4-Trichlorobenzene MR 25 SDWIS / NH1612270 / 2378
1995 cis-1,2-Dichloroethylene MR 25 SDWIS / NH1612270 / 2380
1995 Xylenes, Total MR 25 SDWIS / NH1612270 / 2955
1995 DICHLOROMETHANE MR 25 SDWIS / NH1612270 / 2964
1995 o-Dichlorobenzene MR 25 SDWIS / NH1612270 / 2968
1995 p-Dichlorobenzene MR 25 SDWIS / NH1612270 / 2969
1995 Vinyl chloride MR 25 SDWIS / NH1612270 / 2976

How STANYAN ROAD Compares

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

Metric STANYAN ROAD New Hampshire avg Federal benchmark
Total violations 587 63.6 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 36 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 113 506 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is STANYAN ROAD water safe to drink? ▼
STANYAN ROAD (PWS ID: NH1612270) has 587 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 113 people using Groundwater sources.
How many people does STANYAN ROAD serve? ▼
STANYAN ROAD serves 113 people in DERRY, New Hampshire. It is a Private-owned system using Groundwater water sources with 45 service connections.
What type of violations does STANYAN ROAD have? ▼
STANYAN ROAD has 587 total violations: 36 health-based violations (MCL exceedances or treatment failures), 542 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in STANYAN ROAD water? ▼
No PFAS testing data is available for STANYAN ROAD under the EPA's UCMR5 monitoring program.
What water source does STANYAN ROAD use? ▼
STANYAN ROAD 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.

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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.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial