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Non-Transient Non-Community Water System · PWS NH0664020

Dublin School

Dublin, New Hampshire 03444 - drinking water served from groundwater sources to 215 people, tracked in EPA SDWIS and UCMR5.

215
People served
104
EPA violations
6
Health-based
Untested
UCMR5 result

The verdict

EPA records 104 drinking-water violations at Dublin School, 6% of them health-based - above the New Hampshire per-system average.

104
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: Dublin School

Dublin School is a private-owned non-transient non-community water system that delivers drinking water to 215 residents in Dublin, New Hampshire (Cheshire County) through 26 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 104 total violations for this system , of which 6 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 94 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 6 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%).

Dublin School's 104 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
104
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
26
County
Cheshire
School/Daycare
Yes
MCL Violations
6
Monitoring Violations
94
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 6 1991
TTHM MR 4 2010
Total Haloacetic Acids (HAA5) MR 4 2010
1,2,4-Trichlorobenzene MR 4 1997
cis-1,2-Dichloroethylene MR 4 1997
Xylenes, Total MR 4 1997
DICHLOROMETHANE MR 4 1997
o-Dichlorobenzene MR 4 1997
Vinyl chloride MR 4 1997
1,1-Dichloroethylene MR 4 1997
trans-1,2-Dichloroethylene MR 4 1997
1,2-Dichloroethane MR 4 1997
1,1,1-Trichloroethane MR 4 1997
1,2-Dichloropropane MR 4 1997
Trichloroethylene MR 4 1997
Tetrachloroethylene MR 4 1997
CHLOROBENZENE MR 4 1997
Benzene MR 4 1997
Toluene MR 4 1997
Ethylbenzene MR 4 1997
Styrene MR 4 1997
1,1,2-Trichloroethane MR 4 1997
p-Dichlorobenzene MR 4 1997
Carbon tetrachloride MR 4 1997
Consumer Confidence Rule Other 2 2011
Lead and Copper Rule MR 2 2024

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 Dublin School.

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 NH0664020 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 2 SDWIS / NH0664020 / 5000
2011 Consumer Confidence Rule Other 2 SDWIS / NH0664020 / 7000
2010 TTHM MR 4 SDWIS / NH0664020 / 2950
2010 Total Haloacetic Acids (HAA5) MR 4 SDWIS / NH0664020 / 2456
1997 1,2,4-Trichlorobenzene MR 4 SDWIS / NH0664020 / 2378
1997 cis-1,2-Dichloroethylene MR 4 SDWIS / NH0664020 / 2380
1997 Xylenes, Total MR 4 SDWIS / NH0664020 / 2955
1997 DICHLOROMETHANE MR 4 SDWIS / NH0664020 / 2964
1997 o-Dichlorobenzene MR 4 SDWIS / NH0664020 / 2968
1997 Vinyl chloride MR 4 SDWIS / NH0664020 / 2976
1997 1,1-Dichloroethylene MR 4 SDWIS / NH0664020 / 2977
1997 trans-1,2-Dichloroethylene MR 4 SDWIS / NH0664020 / 2979
1997 1,2-Dichloroethane MR 4 SDWIS / NH0664020 / 2980
1997 1,1,1-Trichloroethane MR 4 SDWIS / NH0664020 / 2981
1997 1,2-Dichloropropane MR 4 SDWIS / NH0664020 / 2983

How Dublin School Compares

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

Metric Dublin School New Hampshire avg Federal benchmark
Total violations 104 63.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 Dublin School water safe to drink? ▼
Dublin School (PWS ID: NH0664020) has 104 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 Dublin School serve? ▼
Dublin School serves 215 people in Dublin, New Hampshire. It is a Private-owned system using Groundwater water sources with 26 service connections.
What type of violations does Dublin School have? ▼
Dublin School has 104 total violations: 6 health-based violations (MCL exceedances or treatment failures), 94 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Dublin School water? ▼
No PFAS testing data is available for Dublin School under the EPA's UCMR5 monitoring program.
What water source does Dublin School use? ▼
Dublin School uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.