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Community Water System · PWS WI2670105

Germantown Water Utility

Germantown, Wisconsin 53022 - drinking water served from groundwater sources to 20,027 people, tracked in EPA SDWIS and UCMR5.

20,027
People served
329
EPA violations
17
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 329 drinking-water violations at Germantown Water Utility, 5% of them health-based - above the Wisconsin per-system average.

329
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
20,027
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Germantown Water Utility

Germantown Water Utility is a local-owned community water system that delivers drinking water to 20,027 residents in Germantown, Wisconsin (Washington County) through 7,417 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 329 total violations for this system , of which 17 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 301 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 p-Dichlorobenzene, recorded in 12 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Germantown Water Utility's 329 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
20,027
Total Violations
329
Health-Based Violations
17
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
7,417
County
Washington
School/Daycare
No
MCL Violations
16
Monitoring Violations
301
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
p-Dichlorobenzene MR 12 2016
o-Dichlorobenzene MR 12 2016
DICHLOROMETHANE MR 12 2016
Xylenes, Total MR 12 2016
cis-1,2-Dichloroethylene MR 12 2016
1,2,4-Trichlorobenzene MR 12 2016
Benzene MR 12 2016
Styrene MR 12 2016
1,2-Dichloropropane MR 12 2016
1,1,1-Trichloroethane MR 12 2016
1,2-Dichloroethane MR 12 2016
trans-1,2-Dichloroethylene MR 12 2016
Vinyl chloride MR 12 2016
CHLOROBENZENE MR 12 2016
Tetrachloroethylene MR 12 2016
Ethylbenzene MR 12 2016
Carbon tetrachloride MR 12 2016
1,1,2-Trichloroethane MR 12 2016
1,1-Dichloroethylene MR 12 2016
Toluene MR 12 2016
Trichloroethylene MR 12 2016
Combined Radium (-226 and -228) MCL 10 1988
Chlorine MR 10 2005
Coliform (TCR) MR 10 2005
Gross Alpha, Excl. Radon and U MR 6 2015
Consumer Confidence Rule Other 6 2005
Gross Alpha, Excl. Radon and U MCL 6 1998
TTHM MR 5 2014
Total Haloacetic Acids (HAA5) MR 5 2014
Radium-228 MR 5 2015

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 348 samples detected PFAS.

Contaminant Date Result MRL Status
PFMBA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/19/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/19/2023 <8.00 ppt 8.00 ppt Not Detected
PFPeA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/19/2023 <7.00 ppt 7.00 ppt Not Detected
NFDHA 9/19/2023 <20.00 ppt 20.00 ppt Not Detected
PFOS 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFOA 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 9/19/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/19/2023 <2.00 ppt 2.00 ppt Not Detected
PFOS 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 9/19/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/19/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
ADONA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFMBA 9/19/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/19/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 9/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/19/2023 <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 Germantown 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 WI2670105 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 Germantown 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 4 SDWIS / WI2670105 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / WI2670105 / 5200
2016 p-Dichlorobenzene MR 12 SDWIS / WI2670105 / 2969
2016 o-Dichlorobenzene MR 12 SDWIS / WI2670105 / 2968
2016 DICHLOROMETHANE MR 12 SDWIS / WI2670105 / 2964
2016 Xylenes, Total MR 12 SDWIS / WI2670105 / 2955
2016 cis-1,2-Dichloroethylene MR 12 SDWIS / WI2670105 / 2380
2016 1,2,4-Trichlorobenzene MR 12 SDWIS / WI2670105 / 2378
2016 Benzene MR 12 SDWIS / WI2670105 / 2990
2016 Styrene MR 12 SDWIS / WI2670105 / 2996
2016 1,2-Dichloropropane MR 12 SDWIS / WI2670105 / 2983
2016 1,1,1-Trichloroethane MR 12 SDWIS / WI2670105 / 2981
2016 1,2-Dichloroethane MR 12 SDWIS / WI2670105 / 2980
2016 trans-1,2-Dichloroethylene MR 12 SDWIS / WI2670105 / 2979
2016 Vinyl chloride MR 12 SDWIS / WI2670105 / 2976

How Germantown Water Utility Compares

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

Metric Germantown Water Utility Wisconsin avg Federal benchmark
Total violations 329 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 17 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 20,027 467 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 Germantown Water Utility water safe to drink? ▼
Germantown Water Utility (PWS ID: WI2670105) has 329 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 20,027 people using Groundwater sources.
How many people does Germantown Water Utility serve? ▼
Germantown Water Utility serves 20,027 people in Germantown, Wisconsin. It is a Local-owned system using Groundwater water sources with 7,417 service connections.
What type of violations does Germantown Water Utility have? ▼
Germantown Water Utility has 329 total violations: 17 health-based violations (MCL exceedances or treatment failures), 301 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Germantown Water Utility water? ▼
No. Germantown Water Utility was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Germantown Water Utility use? ▼
Germantown 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. 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.