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Transient Non-Community Water System · PWS ME0003435

Nesowadnehunk Lake Wilderness Campground

Winterport, Maine 04496 - drinking water served from groundwater sources to 113 people, tracked in EPA SDWIS and UCMR5.

113
People served
42
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 42 drinking-water violations at Nesowadnehunk Lake Wilderness Campground, 26% of them health-based - below the Maine per-system average.

42
Total EPA violations on record
26%
Health-based (MCL / treatment failure)
113
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Nesowadnehunk Lake Wilderness Campground

Nesowadnehunk Lake Wilderness Campground is a private-owned transient non-community water system that delivers drinking water to 113 residents in Winterport, Maine (Piscataquis County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 42 total violations for this system , of which 11 (26%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 29 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 20 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%).

Nesowadnehunk Lake Wilderness Campground's 42 violations sit below 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
113
Total Violations
42
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
1
County
Piscataquis
School/Daycare
No
MCL Violations
11
Monitoring Violations
29
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 20 1997
Coliform (TCR) MCL 6 2002
Revised Total Coliform Rule MCL 5 2023
Revised Total Coliform Rule MON 4 2024
Nitrate MR 3 1995
E. COLI MR 2 2023
Public Notice Other 2 2023

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 Nesowadnehunk Lake Wilderness Campground.

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 ME0003435 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 Revised Total Coliform Rule MON 4 SDWIS / ME0003435 / 8000
2023 Revised Total Coliform Rule MCL 5 SDWIS / ME0003435 / 8000
2023 E. COLI MR 2 SDWIS / ME0003435 / 3014
2023 Public Notice Other 2 SDWIS / ME0003435 / 7500
2002 Coliform (TCR) MCL 6 SDWIS / ME0003435 / 3100
1997 Coliform (TCR) MR 20 SDWIS / ME0003435 / 3100
1995 Nitrate MR 3 SDWIS / ME0003435 / 1040

How Nesowadnehunk Lake Wilderness Campground Compares

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

Metric Nesowadnehunk Lake Wilderness Campground Maine avg Federal benchmark
Total violations 42 79.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 11 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 113 502 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 Nesowadnehunk Lake Wilderness Campground water safe to drink? ▼
Nesowadnehunk Lake Wilderness Campground (PWS ID: ME0003435) has 42 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 113 people using Groundwater sources.
How many people does Nesowadnehunk Lake Wilderness Campground serve? ▼
Nesowadnehunk Lake Wilderness Campground serves 113 people in Winterport, Maine. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Nesowadnehunk Lake Wilderness Campground have? ▼
Nesowadnehunk Lake Wilderness Campground has 42 total violations: 11 health-based violations (MCL exceedances or treatment failures), 29 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Nesowadnehunk Lake Wilderness Campground water? ▼
No PFAS testing data is available for Nesowadnehunk Lake Wilderness Campground under the EPA's UCMR5 monitoring program.
What water source does Nesowadnehunk Lake Wilderness Campground use? ▼
Nesowadnehunk Lake Wilderness Campground uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.