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Community Water System · PWS ME0090830

Lewiston Water & Sewer Division

Lewiston, Maine 04240 - drinking water served from surface water sources to 23,720 people, tracked in EPA SDWIS and UCMR5.

23,720
People served
19
EPA violations
17
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 19 drinking-water violations at Lewiston Water & Sewer Division, 89% of them health-based - below the Maine per-system average.

19
Total EPA violations on record
89%
Health-based (MCL / treatment failure)
23,720
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lewiston Water & Sewer Division

Lewiston Water & Sewer Division is a local-owned community water system that delivers drinking water to 23,720 residents in Lewiston, Maine (Androscoggin County) through 9,308 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 19 total violations for this system , of which 17 (89%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. The most recent violation on record dates to 2007.

The most frequently cited contaminant at this system is Interim Enhanced Surface Water Treatment Rule, recorded in 6 violations (TT, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Lewiston Water & Sewer Division's 19 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
23,720
Total Violations
19
Health-Based Violations
17
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
9,308
County
Androscoggin
School/Daycare
No
MCL Violations
7
Monitoring Violations
0
Treatment Tech Violations
10

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule TT 6 2007
Coliform (TCR) MCL 5 2007
Surface Water Treatment Rule TT 4 2006
Total Haloacetic Acids (HAA5) MCL 2 2006

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFDoA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 8/14/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 8/14/2023 <2.00 ppt 2.00 ppt Not Detected
PFPeA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFTA 8/14/2023 <8.00 ppt 8.00 ppt Not Detected
NFDHA 8/14/2023 <20.00 ppt 20.00 ppt Not Detected
PFTrDA 8/14/2023 <7.00 ppt 7.00 ppt Not Detected
PFMPA 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
NEtFOSAA 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 8/14/2023 <6.00 ppt 6.00 ppt Not Detected
PFUnA 5/14/2024 <2.00 ppt 2.00 ppt Not Detected
PFTrDA 5/14/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/14/2024 <5.00 ppt 5.00 ppt Not Detected
PFDA 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 5/14/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 5/14/2024 <4.00 ppt 4.00 ppt Not Detected
PFTA 5/14/2024 <8.00 ppt 8.00 ppt Not Detected
PFHxA 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 5/14/2024 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 5/14/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 5/14/2024 <2.00 ppt 2.00 ppt Not Detected
8:2 FTS 5/14/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 5/14/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 5/14/2024 <5.00 ppt 5.00 ppt Not Detected
PFEESA 5/14/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 5/14/2024 <6.00 ppt 6.00 ppt Not Detected
PFHpS 5/14/2024 <3.00 ppt 3.00 ppt Not Detected

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 Lewiston Water & Sewer Division.

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 ME0090830 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
2007 Interim Enhanced Surface Water Treatment Rule TT 6 SDWIS / ME0090830 / 0300
2007 Coliform (TCR) MCL 5 SDWIS / ME0090830 / 3100
2006 Surface Water Treatment Rule TT 4 SDWIS / ME0090830 / 0200
2006 Total Haloacetic Acids (HAA5) MCL 2 SDWIS / ME0090830 / 2456

How Lewiston Water & Sewer Division Compares

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

Metric Lewiston Water & Sewer Division Maine avg Federal benchmark
Total violations 19 79.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 17 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 23,720 502 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 Lewiston Water & Sewer Division water safe to drink? ▼
Lewiston Water & Sewer Division (PWS ID: ME0090830) has 19 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 23,720 people using Surface Water sources.
How many people does Lewiston Water & Sewer Division serve? ▼
Lewiston Water & Sewer Division serves 23,720 people in Lewiston, Maine. It is a Local-owned system using Surface Water water sources with 9,308 service connections.
What type of violations does Lewiston Water & Sewer Division have? ▼
Lewiston Water & Sewer Division has 19 total violations: 17 health-based violations (MCL exceedances or treatment failures), 0 monitoring/reporting violations, and 10 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lewiston Water & Sewer Division water? ▼
No. Lewiston Water & Sewer Division was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Lewiston Water & Sewer Division use? ▼
Lewiston Water & Sewer Division uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.