PlainWater
States → Maine

Non-Transient Non-Community Water System · PWS ME0000676

Msad 11 Helen Thompson School

Gardiner, Maine 04345 - drinking water served from groundwater sources to 331 people, tracked in EPA SDWIS and UCMR5.

331
People served
113
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 113 drinking-water violations at Msad 11 Helen Thompson School, 7% of them health-based - above the Maine per-system average.

113
Total EPA violations on record
7%
Health-based (MCL / treatment failure)
331
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Msad 11 Helen Thompson School

Msad 11 Helen Thompson School is a local-owned non-transient non-community water system that delivers drinking water to 331 residents in Gardiner, Maine (Kennebec County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 113 total violations for this system , of which 8 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 100 monitoring and reporting violations are on file. The most recent violation on record dates to 2013.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 9 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 Maine, EPA tracks 1,864 public water systems serving 936,624 people, with 148,796 cumulative violations and 23,741 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 79.8 violations. Statewide, 14 of 41 UCMR5-tested systems have reported PFAS detections (34.1%).

Msad 11 Helen Thompson School's 113 violations sit above the Maine 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
331
Total Violations
113
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Kennebec
School/Daycare
Yes
MCL Violations
8
Monitoring Violations
100
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 9 1996
Coliform (TCR) MCL 8 2013
CHLOROBENZENE MR 6 1996
Benzene MR 6 1996
Coliform (TCR) MR 5 2002
Xylenes, Total MR 4 1996
o-Dichlorobenzene MR 4 1996
Vinyl chloride MR 4 1996
1,1-Dichloroethylene MR 4 1996
trans-1,2-Dichloroethylene MR 4 1996
1,2-Dichloroethane MR 4 1996
Carbon tetrachloride MR 4 1996
1,2-Dichloropropane MR 4 1996
Tetrachloroethylene MR 4 1996
Toluene MR 4 1996
Trichloroethylene MR 4 1996
DICHLOROMETHANE MR 4 1996
1,1,2-Trichloroethane MR 4 1996
Styrene MR 4 1996
p-Dichlorobenzene MR 4 1996
1,1,1-Trichloroethane MR 4 1996
Ethylbenzene MR 4 1996
Public Notice Other 3 2013
1,2,4-Trichlorobenzene MR 3 1996
cis-1,2-Dichloroethylene MR 3 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 Msad 11 Helen Thompson 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 ME0000676 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Maine Drinking Water Authority

Maine'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 ME 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
2013 Coliform (TCR) MCL 8 SDWIS / ME0000676 / 3100
2013 Public Notice Other 3 SDWIS / ME0000676 / 7500
2002 Coliform (TCR) MR 5 SDWIS / ME0000676 / 3100
1996 Lead and Copper Rule MR 9 SDWIS / ME0000676 / 5000
1996 CHLOROBENZENE MR 6 SDWIS / ME0000676 / 2989
1996 Benzene MR 6 SDWIS / ME0000676 / 2990
1996 Xylenes, Total MR 4 SDWIS / ME0000676 / 2955
1996 o-Dichlorobenzene MR 4 SDWIS / ME0000676 / 2968
1996 Vinyl chloride MR 4 SDWIS / ME0000676 / 2976
1996 1,1-Dichloroethylene MR 4 SDWIS / ME0000676 / 2977
1996 trans-1,2-Dichloroethylene MR 4 SDWIS / ME0000676 / 2979
1996 1,2-Dichloroethane MR 4 SDWIS / ME0000676 / 2980
1996 Carbon tetrachloride MR 4 SDWIS / ME0000676 / 2982
1996 1,2-Dichloropropane MR 4 SDWIS / ME0000676 / 2983
1996 Tetrachloroethylene MR 4 SDWIS / ME0000676 / 2987

How Msad 11 Helen Thompson School Compares

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

Metric Msad 11 Helen Thompson School Maine avg Federal benchmark
Total violations 113 79.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 12.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 34.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 331 502 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,864 regulated public water systems in Maine.

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 Msad 11 Helen Thompson School water safe to drink? ▼
Msad 11 Helen Thompson School (PWS ID: ME0000676) has 113 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 331 people using Groundwater sources.
How many people does Msad 11 Helen Thompson School serve? ▼
Msad 11 Helen Thompson School serves 331 people in Gardiner, Maine. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Msad 11 Helen Thompson School have? ▼
Msad 11 Helen Thompson School has 113 total violations: 8 health-based violations (MCL exceedances or treatment failures), 100 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Msad 11 Helen Thompson School water? ▼
No PFAS testing data is available for Msad 11 Helen Thompson School under the EPA's UCMR5 monitoring program.
What water source does Msad 11 Helen Thompson School use? ▼
Msad 11 Helen Thompson 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.