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Community Water System · PWS NH2003020

Acorn Terrace

Rochester, New Hampshire 03867 - drinking water served from groundwater sources to 215 people, tracked in EPA SDWIS and UCMR5.

215
People served
157
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 157 drinking-water violations at Acorn Terrace, 6% of them health-based - above the New Hampshire per-system average.

157
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
215
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Acorn Terrace

Acorn Terrace is a private-owned community water system that delivers drinking water to 215 residents in Rochester, New Hampshire (Strafford County) through 88 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 157 total violations for this system , of which 9 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 141 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is cis-1,2-Dichloroethylene, recorded in 6 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%).

Acorn Terrace's 157 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
215
Total Violations
157
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
88
County
Strafford
School/Daycare
No
MCL Violations
4
Monitoring Violations
141
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
cis-1,2-Dichloroethylene MR 6 2003
o-Dichlorobenzene MR 6 2003
p-Dichlorobenzene MR 6 2003
Vinyl chloride MR 6 2003
1,2-Dichloroethane MR 6 2003
1,1,1-Trichloroethane MR 6 2003
1,2-Dichloropropane MR 6 2003
Tetrachloroethylene MR 6 2003
Toluene MR 6 2003
Ethylbenzene MR 6 2003
Styrene MR 6 2003
1,2,4-Trichlorobenzene MR 6 2003
DICHLOROMETHANE MR 6 2003
1,1-Dichloroethylene MR 6 2003
trans-1,2-Dichloroethylene MR 6 2003
Carbon tetrachloride MR 6 2003
Trichloroethylene MR 6 2003
1,1,2-Trichloroethane MR 6 2003
CHLOROBENZENE MR 6 2003
Xylenes, Total MR 6 2003
Benzene MR 6 2003
Lead and Copper Rule TT 5 2007
Lead and Copper Rule MR 5 2006
Coliform (TCR) MCL 4 2010
E. COLI MR 4 2022
Coliform (TCR) MR 4 2010
Public Notice Other 2 2007
Nitrate MR 2 1994

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 Acorn Terrace.

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 NH2003020 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
2022 E. COLI MR 4 SDWIS / NH2003020 / 3014
2010 Coliform (TCR) MCL 4 SDWIS / NH2003020 / 3100
2010 Coliform (TCR) MR 4 SDWIS / NH2003020 / 3100
2007 Lead and Copper Rule TT 5 SDWIS / NH2003020 / 5000
2007 Public Notice Other 2 SDWIS / NH2003020 / 7500
2006 Lead and Copper Rule MR 5 SDWIS / NH2003020 / 5000
2003 cis-1,2-Dichloroethylene MR 6 SDWIS / NH2003020 / 2380
2003 o-Dichlorobenzene MR 6 SDWIS / NH2003020 / 2968
2003 p-Dichlorobenzene MR 6 SDWIS / NH2003020 / 2969
2003 Vinyl chloride MR 6 SDWIS / NH2003020 / 2976
2003 1,2-Dichloroethane MR 6 SDWIS / NH2003020 / 2980
2003 1,1,1-Trichloroethane MR 6 SDWIS / NH2003020 / 2981
2003 1,2-Dichloropropane MR 6 SDWIS / NH2003020 / 2983
2003 Tetrachloroethylene MR 6 SDWIS / NH2003020 / 2987
2003 Toluene MR 6 SDWIS / NH2003020 / 2991

How Acorn Terrace Compares

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

Metric Acorn Terrace New Hampshire avg Federal benchmark
Total violations 157 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 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 215 506 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 Acorn Terrace water safe to drink? ▼
Acorn Terrace (PWS ID: NH2003020) has 157 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 215 people using Groundwater sources.
How many people does Acorn Terrace serve? ▼
Acorn Terrace serves 215 people in Rochester, New Hampshire. It is a Private-owned system using Groundwater water sources with 88 service connections.
What type of violations does Acorn Terrace have? ▼
Acorn Terrace has 157 total violations: 9 health-based violations (MCL exceedances or treatment failures), 141 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Acorn Terrace water? ▼
No PFAS testing data is available for Acorn Terrace under the EPA's UCMR5 monitoring program.
What water source does Acorn Terrace use? ▼
Acorn Terrace 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.