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Community Water System · PWS ME0006735

Marshwood Estates

Sparta, Maine 07871 - drinking water served from groundwater sources to 233 people, tracked in EPA SDWIS and UCMR5.

233
People served
383
EPA violations
40
Health-based
Untested
UCMR5 result

The verdict

EPA records 383 drinking-water violations at Marshwood Estates, 10% of them health-based - above the Maine per-system average.

383
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
233
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Marshwood Estates

Marshwood Estates is a private-owned community water system that delivers drinking water to 233 residents in Sparta, Maine (York County) through 93 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 383 total violations for this system , of which 40 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 297 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 79 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%).

Marshwood Estates's 383 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
233
Total Violations
383
Health-Based Violations
40
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
93
County
York
School/Daycare
No
MCL Violations
36
Monitoring Violations
297
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 79 2015
Lead and Copper Rule MR 48 2021
Coliform (TCR) MCL 36 2015
Arsenic MR 32 2022
TTHM MR 30 2017
Total Haloacetic Acids (HAA5) MR 30 2017
Public Notice Other 25 2018
Consumer Confidence Rule Other 15 2022
E. COLI MR 12 2017
Nitrate MR 7 2002
Antimony, Total MR 5 2000
Barium MR 5 2000
Cadmium MR 5 2000
Chromium MR 5 2000
Mercury MR 5 2000
Nickel MR 5 2000
Beryllium, Total MR 5 2000
CYANIDE MR 5 2000
Thallium, Total MR 5 2000
Fluoride MR 5 2000
Selenium MR 5 2000
Gross Alpha, Excl. Radon and U MR 4 2003
Lead and Copper Rule TT 4 2020
Revised Total Coliform Rule RPT 2 2019

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 Marshwood Estates.

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 ME0006735 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
2022 Arsenic MR 32 SDWIS / ME0006735 / 1005
2022 Consumer Confidence Rule Other 15 SDWIS / ME0006735 / 7000
2021 Lead and Copper Rule MR 48 SDWIS / ME0006735 / 5000
2020 Lead and Copper Rule TT 4 SDWIS / ME0006735 / 5000
2019 Revised Total Coliform Rule RPT 2 SDWIS / ME0006735 / 8000
2018 Public Notice Other 25 SDWIS / ME0006735 / 7500
2017 TTHM MR 30 SDWIS / ME0006735 / 2950
2017 Total Haloacetic Acids (HAA5) MR 30 SDWIS / ME0006735 / 2456
2017 E. COLI MR 12 SDWIS / ME0006735 / 3014
2015 Coliform (TCR) MR 79 SDWIS / ME0006735 / 3100
2015 Coliform (TCR) MCL 36 SDWIS / ME0006735 / 3100
2003 Gross Alpha, Excl. Radon and U MR 4 SDWIS / ME0006735 / 4000
2002 Nitrate MR 7 SDWIS / ME0006735 / 1040
2000 Antimony, Total MR 5 SDWIS / ME0006735 / 1074
2000 Barium MR 5 SDWIS / ME0006735 / 1010

How Marshwood Estates Compares

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

Metric Marshwood Estates Maine avg Federal benchmark
Total violations 383 79.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 40 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 233 502 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 Marshwood Estates water safe to drink? ▼
Marshwood Estates (PWS ID: ME0006735) has 383 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 233 people using Groundwater sources.
How many people does Marshwood Estates serve? ▼
Marshwood Estates serves 233 people in Sparta, Maine. It is a Private-owned system using Groundwater water sources with 93 service connections.
What type of violations does Marshwood Estates have? ▼
Marshwood Estates has 383 total violations: 40 health-based violations (MCL exceedances or treatment failures), 297 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Marshwood Estates water? ▼
No PFAS testing data is available for Marshwood Estates under the EPA's UCMR5 monitoring program.
What water source does Marshwood Estates use? ▼
Marshwood Estates 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.