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Community Water System · PWS WI7370107

Maine Water Utility

Wausau, Wisconsin 54401 - drinking water served from groundwater sources to 271 people, tracked in EPA SDWIS and UCMR5.

271
People served
155
EPA violations
81
Health-based
Untested
UCMR5 result

The verdict

EPA records 155 drinking-water violations at Maine Water Utility, 52% of them health-based - above the Wisconsin per-system average.

155
Total EPA violations on record
52%
Health-based (MCL / treatment failure)
271
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Maine Water Utility

Maine Water Utility is a local-owned community water system that delivers drinking water to 271 residents in Wausau, Wisconsin (Marathon County) through 77 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 155 total violations for this system , of which 81 (52%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 22 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 TTHM, recorded in 53 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 Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Maine Water Utility's 155 violations sit above the Wisconsin 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
271
Total Violations
155
Health-Based Violations
81
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
77
County
Marathon
School/Daycare
No
MCL Violations
78
Monitoring Violations
22
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 53 2008
Public Notice Other 40 2024
Coliform (TCR) MCL 25 2002
Coliform (TCR) MR 12 1995
TTHM MR 4 2022
Total Haloacetic Acids (HAA5) MR 4 2022
Lead and Copper Rule MR 2 2018
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 2 2019
LEAD AND COPPER RULE REVISIONS RPT 1 2024
LEAD AND COPPER RULE REVISIONS TT 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 Maine Water Utility.

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 WI7370107 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR, Drinking Water and Groundwater is the primacy agency that licenses and inspects Maine Water Utility under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR, Drinking Water and Groundwater

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 Public Notice Other 40 SDWIS / WI7370107 / 7500
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / WI7370107 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / WI7370107 / 5200
2022 TTHM MR 4 SDWIS / WI7370107 / 2950
2022 Total Haloacetic Acids (HAA5) MR 4 SDWIS / WI7370107 / 2456
2019 Stage 1 Disinfectants and Disinfection Byproducts Rule TT 2 SDWIS / WI7370107 / 0400
2018 Lead and Copper Rule MR 2 SDWIS / WI7370107 / 5000
2008 TTHM MCL 53 SDWIS / WI7370107 / 2950
2002 Coliform (TCR) MCL 25 SDWIS / WI7370107 / 3100
1995 Coliform (TCR) MR 12 SDWIS / WI7370107 / 3100

How Maine Water Utility Compares

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

Metric Maine Water Utility Wisconsin avg Federal benchmark
Total violations 155 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 81 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 271 467 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.

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 Maine Water Utility water safe to drink? ▼
Maine Water Utility (PWS ID: WI7370107) has 155 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 271 people using Groundwater sources.
How many people does Maine Water Utility serve? ▼
Maine Water Utility serves 271 people in Wausau, Wisconsin. It is a Local-owned system using Groundwater water sources with 77 service connections.
What type of violations does Maine Water Utility have? ▼
Maine Water Utility has 155 total violations: 81 health-based violations (MCL exceedances or treatment failures), 22 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Maine Water Utility water? ▼
No PFAS testing data is available for Maine Water Utility under the EPA's UCMR5 monitoring program.
What water source does Maine Water Utility use? ▼
Maine Water Utility 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.