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Community Water System · PWS PA7670076

Hanover Muni Water Works

Hanover, Pennsylvania 17331 - drinking water served from surface water sources to 40,900 people, tracked in EPA SDWIS and UCMR5.

40,900
People served
251
EPA violations
15
Health-based
1 PFAS
UCMR5 result

The verdict

EPA records 251 drinking-water violations at Hanover Muni Water Works, 6% of them health-based - above the Pennsylvania per-system average, and UCMR5 testing detected 1 PFAS compound.

251
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
40,900
People served by this system
1
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hanover Muni Water Works

Hanover Muni Water Works is a local-owned community water system that delivers drinking water to 40,900 residents in Hanover, Pennsylvania (York County) through 18,027 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 251 total violations for this system , of which 15 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 220 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 Surface Water Treatment Rule, recorded in 33 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 4.6 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Pennsylvania, EPA tracks 7,701 public water systems serving 12,630,061 people, with 1,159,868 cumulative violations and 68,517 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 150.6 violations. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%).

Hanover Muni Water Works's 251 violations sit above the Pennsylvania average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
40,900
Total Violations
251
Health-Based Violations
15
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
18,027
County
York
School/Daycare
No
MCL Violations
11
Monitoring Violations
220
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 33 2005
CARBON, TOTAL MR 20 2023
Interim Enhanced Surface Water Treatment Rule MR 15 2024
Public Notice Other 10 2024
TTHM MR 9 2023
Coliform (TCR) MCL 8 2004
Total Haloacetic Acids (HAA5) MR 7 2023
Chlorine MR 6 2005
p-Dichlorobenzene MR 6 1995
1,1-Dichloroethylene MR 6 1995
1,1,1-Trichloroethane MR 6 1995
Carbon tetrachloride MR 6 1995
Trichloroethylene MR 6 1995
Benzene MR 6 1995
1,2-Dichloroethane MR 6 1995
1,2,4-Trichlorobenzene MR 4 1995
Xylenes, Total MR 4 1995
DICHLOROMETHANE MR 4 1995
trans-1,2-Dichloroethylene MR 4 1995
1,2-Dichloropropane MR 4 1995
Tetrachloroethylene MR 4 1995
CHLOROBENZENE MR 4 1995
Toluene MR 4 1995
Styrene MR 4 1995
cis-1,2-Dichloroethylene MR 4 1995
o-Dichlorobenzene MR 4 1995
1,1,2-Trichloroethane MR 4 1995
Ethylbenzene MR 4 1995
TTHM MCL 3 2014
Consumer Confidence Rule Other 3 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeA 9/7/2023 4.60 ppt 3.00 ppt Detected
PFOA 9/7/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/7/2023 <2.00 ppt 2.00 ppt Not Detected
PFOS 9/7/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/7/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/7/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/7/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 9/7/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/7/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/7/2023 <6.00 ppt 6.00 ppt Not Detected
NFDHA 9/7/2023 <20.00 ppt 20.00 ppt Not Detected
PFBA 9/7/2023 <5.00 ppt 5.00 ppt Not Detected
PFNA 9/7/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 9/7/2023 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 9/7/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/7/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/7/2023 <4.00 ppt 4.00 ppt Not Detected
PFMPA 9/7/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/7/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 6/15/2023 <20.00 ppt 20.00 ppt Not Detected
PFHpS 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 6/15/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 6/15/2023 <2.00 ppt 2.00 ppt Not Detected
8:2 FTS 6/15/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 6/15/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 6/15/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 6/15/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 6/15/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 6/15/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 6/15/2023 <6.00 ppt 6.00 ppt Not Detected
ADONA 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 6/15/2023 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 6/15/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 6/15/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 6/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/15/2023 <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 Hanover Muni Water Works.

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 PA7670076 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Pennsylvania Drinking Water Authority

Pennsylvania DEP, Bureau of Safe Drinking Water is the primacy agency that licenses and inspects Hanover Muni Water Works under EPA-delegated authority.

Open PA regulator portal

Source: Pennsylvania DEP, Bureau of Safe Drinking Water

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 Interim Enhanced Surface Water Treatment Rule MR 15 SDWIS / PA7670076 / 0300
2024 Public Notice Other 10 SDWIS / PA7670076 / 7500
2023 CARBON, TOTAL MR 20 SDWIS / PA7670076 / 2920
2023 TTHM MR 9 SDWIS / PA7670076 / 2950
2023 Total Haloacetic Acids (HAA5) MR 7 SDWIS / PA7670076 / 2456
2023 Consumer Confidence Rule Other 3 SDWIS / PA7670076 / 7000
2018 CARBON, TOTAL TT 2 SDWIS / PA7670076 / 2920
2018 Surface Water Treatment Rule TT 2 SDWIS / PA7670076 / 0200
2014 TTHM MCL 3 SDWIS / PA7670076 / 2950
2014 BHC-GAMMA MR 2 SDWIS / PA7670076 / 2010
2014 Di(2-ethylhexyl) phthalate MR 2 SDWIS / PA7670076 / 2039
2014 Hexachlorocyclopentadiene MR 2 SDWIS / PA7670076 / 2042
2014 LASSO MR 2 SDWIS / PA7670076 / 2051
2014 Heptachlor MR 2 SDWIS / PA7670076 / 2065
2014 Heptachlor epoxide MR 2 SDWIS / PA7670076 / 2067

How Hanover Muni Water Works Compares

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

Metric Hanover Muni Water Works Pennsylvania avg Federal benchmark
Total violations 251 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 8.9 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 57.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 40,900 1,640 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,701 regulated public water systems in Pennsylvania.

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 Hanover Muni Water Works water safe to drink? ▼
Hanover Muni Water Works (PWS ID: PA7670076) has 251 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 40,900 people using Surface Water sources.
How many people does Hanover Muni Water Works serve? ▼
Hanover Muni Water Works serves 40,900 people in Hanover, Pennsylvania. It is a Local-owned system using Surface Water water sources with 18,027 service connections.
What type of violations does Hanover Muni Water Works have? ▼
Hanover Muni Water Works has 251 total violations: 15 health-based violations (MCL exceedances or treatment failures), 220 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hanover Muni Water Works water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in Hanover Muni Water Works's water supply: PFPeA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Hanover Muni Water Works use? ▼
Hanover Muni Water Works 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.