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Community Water System · PWS ME0092270

Plymouth Water District

Plymouth, Maine 04969 - drinking water served from groundwater sources to 150 people, tracked in EPA SDWIS and UCMR5.

150
People served
83
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 83 drinking-water violations at Plymouth Water District - above the Maine per-system average.

83
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
150
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Plymouth Water District

Plymouth Water District is a local-owned community water system that delivers drinking water to 150 residents in Plymouth, Maine (Penobscot County) through 60 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 83 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 65 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 42 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%).

Plymouth Water District's 83 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
150
Total Violations
83
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
60
County
Penobscot
School/Daycare
No
MCL Violations
0
Monitoring Violations
65
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 42 2012
Consumer Confidence Rule Other 16 2024
Lead and Copper Rule MR 6 2017
TTHM MR 4 2008
Total Haloacetic Acids (HAA5) MR 4 2008
Endothall MR 3 2016
Combined Radium (-226 and -228) MR 3 2016
Diquat MR 3 2016
Public Notice Other 2 2013

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 Plymouth Water District.

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 ME0092270 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
2024 Consumer Confidence Rule Other 16 SDWIS / ME0092270 / 7000
2017 Lead and Copper Rule MR 6 SDWIS / ME0092270 / 5000
2016 Endothall MR 3 SDWIS / ME0092270 / 2033
2016 Combined Radium (-226 and -228) MR 3 SDWIS / ME0092270 / 4010
2016 Diquat MR 3 SDWIS / ME0092270 / 2032
2013 Public Notice Other 2 SDWIS / ME0092270 / 7500
2012 Coliform (TCR) MR 42 SDWIS / ME0092270 / 3100
2008 TTHM MR 4 SDWIS / ME0092270 / 2950
2008 Total Haloacetic Acids (HAA5) MR 4 SDWIS / ME0092270 / 2456

How Plymouth Water District Compares

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

Metric Plymouth Water District Maine avg Federal benchmark
Total violations 83 79.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 150 502 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 Plymouth Water District water safe to drink? ▼
Plymouth Water District (PWS ID: ME0092270) has 83 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 150 people using Groundwater sources.
How many people does Plymouth Water District serve? ▼
Plymouth Water District serves 150 people in Plymouth, Maine. It is a Local-owned system using Groundwater water sources with 60 service connections.
What type of violations does Plymouth Water District have? ▼
Plymouth Water District has 83 total violations: 0 health-based violations (MCL exceedances or treatment failures), 65 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Plymouth Water District water? ▼
No PFAS testing data is available for Plymouth Water District under the EPA's UCMR5 monitoring program.
What water source does Plymouth Water District use? ▼
Plymouth Water District 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.