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Community Water System · PWS ME0091030

Monson Utilities District

Monson, Maine 04464 - drinking water served from groundwater sources to 298 people, tracked in EPA SDWIS and UCMR5.

298
People served
108
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 108 drinking-water violations at Monson Utilities District, 8% of them health-based - above the Maine per-system average.

108
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
298
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Monson Utilities District

Monson Utilities District is a local-owned community water system that delivers drinking water to 298 residents in Monson, Maine (Piscataquis County) through 119 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 108 total violations for this system , of which 9 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 86 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 17 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%).

Monson Utilities District's 108 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
298
Total Violations
108
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
119
County
Piscataquis
School/Daycare
No
MCL Violations
2
Monitoring Violations
86
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 17 2025
Consumer Confidence Rule Other 10 2023
Nickel MR 8 2003
Beryllium, Total MR 8 2003
Thallium, Total MR 8 2003
Antimony, Total MR 8 2003
CYANIDE MR 8 2003
Lead and Copper Rule TT 7 2024
Diquat MR 5 2015
Endothall MR 5 2015
TTHM MR 4 2014
Total Haloacetic Acids (HAA5) MR 4 2014
Coliform (TCR) MR 4 2013
Radium-228 MR 4 2005
Nitrate MR 3 1995
Coliform (TCR) MCL 2 1991
Public Notice Other 1 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 Monson Utilities 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 ME0091030 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
2025 Lead and Copper Rule MR 17 SDWIS / ME0091030 / 5000
2024 Lead and Copper Rule TT 7 SDWIS / ME0091030 / 5000
2024 Public Notice Other 1 SDWIS / ME0091030 / 7500
2023 Consumer Confidence Rule Other 10 SDWIS / ME0091030 / 7000
2015 Diquat MR 5 SDWIS / ME0091030 / 2032
2015 Endothall MR 5 SDWIS / ME0091030 / 2033
2014 TTHM MR 4 SDWIS / ME0091030 / 2950
2014 Total Haloacetic Acids (HAA5) MR 4 SDWIS / ME0091030 / 2456
2013 Coliform (TCR) MR 4 SDWIS / ME0091030 / 3100
2005 Radium-228 MR 4 SDWIS / ME0091030 / 4030
2003 Nickel MR 8 SDWIS / ME0091030 / 1036
2003 Beryllium, Total MR 8 SDWIS / ME0091030 / 1075
2003 Thallium, Total MR 8 SDWIS / ME0091030 / 1085
2003 Antimony, Total MR 8 SDWIS / ME0091030 / 1074
2003 CYANIDE MR 8 SDWIS / ME0091030 / 1024

How Monson Utilities District Compares

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

Metric Monson Utilities District Maine avg Federal benchmark
Total violations 108 79.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 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 298 502 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 Monson Utilities District water safe to drink? ▼
Monson Utilities District (PWS ID: ME0091030) has 108 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 298 people using Groundwater sources.
How many people does Monson Utilities District serve? ▼
Monson Utilities District serves 298 people in Monson, Maine. It is a Local-owned system using Groundwater water sources with 119 service connections.
What type of violations does Monson Utilities District have? ▼
Monson Utilities District has 108 total violations: 9 health-based violations (MCL exceedances or treatment failures), 86 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Monson Utilities District water? ▼
No PFAS testing data is available for Monson Utilities District under the EPA's UCMR5 monitoring program.
What water source does Monson Utilities District use? ▼
Monson Utilities 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.