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MENOMONEE FALLS WW - GROUNDWATER

PWS ID: WI2685747 · MENOMONEE FALLS, Wisconsin 53051

MENOMONEE FALLS WW - GROUNDWATER serves 1,796 people in MENOMONEE FALLS, Wisconsin using Groundwater water sources. It has 271 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MENOMONEE FALLS WW - GROUNDWATER

MENOMONEE FALLS WW - GROUNDWATER is a local-owned community water system that delivers drinking water to 1,796 residents in MENOMONEE FALLS, Wisconsin (Waukesha County) through 665 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 271 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 264 monitoring and reporting violations are on file. The most recent violation on record dates to 2002.

The most frequently cited contaminant at this system is Styrene, recorded in 12 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 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. MENOMONEE FALLS WW - GROUNDWATER's 271 violations sit above the Wisconsin average. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%). 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
1,796
Total Violations
271
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
665
County
Waukesha
School/Daycare
No
MCL Violations
0
Monitoring Violations
264
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Styrene MR 12 2002
Ethylbenzene MR 12 2002
1,1,2-Trichloroethane MR 12 2002
Trichloroethylene MR 12 2002
1,2-Dichloropropane MR 12 2002
cis-1,2-Dichloroethylene MR 12 2002
1,2,4-Trichlorobenzene MR 12 2002
DICHLOROMETHANE MR 12 2002
Xylenes, Total MR 12 2002
1,1-Dichloroethylene MR 12 2002
o-Dichlorobenzene MR 12 2002
trans-1,2-Dichloroethylene MR 12 2002
1,2-Dichloroethane MR 12 2002
1,1,1-Trichloroethane MR 12 2002
Carbon tetrachloride MR 12 2002
Tetrachloroethylene MR 12 2002
CHLOROBENZENE MR 12 2002
Benzene MR 12 2002
Toluene MR 12 2002
Vinyl chloride MR 12 2002
p-Dichlorobenzene MR 12 2002
Coliform (TCR) MR 10 2001
Consumer Confidence Rule Other 2 2002
2,3,7,8-TCDD MR 2 1999

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 MENOMONEE FALLS WW - GROUNDWATER.

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 WI2685747 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 MENOMONEE FALLS WW - GROUNDWATER 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
2002 Styrene MR 12 SDWIS / WI2685747 / 2996
2002 Ethylbenzene MR 12 SDWIS / WI2685747 / 2992
2002 1,1,2-Trichloroethane MR 12 SDWIS / WI2685747 / 2985
2002 Trichloroethylene MR 12 SDWIS / WI2685747 / 2984
2002 1,2-Dichloropropane MR 12 SDWIS / WI2685747 / 2983
2002 cis-1,2-Dichloroethylene MR 12 SDWIS / WI2685747 / 2380
2002 1,2,4-Trichlorobenzene MR 12 SDWIS / WI2685747 / 2378
2002 DICHLOROMETHANE MR 12 SDWIS / WI2685747 / 2964
2002 Xylenes, Total MR 12 SDWIS / WI2685747 / 2955
2002 1,1-Dichloroethylene MR 12 SDWIS / WI2685747 / 2977
2002 o-Dichlorobenzene MR 12 SDWIS / WI2685747 / 2968
2002 trans-1,2-Dichloroethylene MR 12 SDWIS / WI2685747 / 2979
2002 1,2-Dichloroethane MR 12 SDWIS / WI2685747 / 2980
2002 1,1,1-Trichloroethane MR 12 SDWIS / WI2685747 / 2981
2002 Carbon tetrachloride MR 12 SDWIS / WI2685747 / 2982

How MENOMONEE FALLS WW - GROUNDWATER Compares

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

Metric MENOMONEE FALLS WW - GROUNDWATER Wisconsin avg Federal benchmark
Total violations 271 26 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 1,796 467 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is MENOMONEE FALLS WW - GROUNDWATER water safe to drink? ▼
MENOMONEE FALLS WW - GROUNDWATER (PWS ID: WI2685747) has 271 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,796 people using Groundwater sources.
How many people does MENOMONEE FALLS WW - GROUNDWATER serve? ▼
MENOMONEE FALLS WW - GROUNDWATER serves 1,796 people in MENOMONEE FALLS, Wisconsin. It is a Local-owned system using Groundwater water sources with 665 service connections.
What type of violations does MENOMONEE FALLS WW - GROUNDWATER have? ▼
MENOMONEE FALLS WW - GROUNDWATER has 271 total violations: 0 health-based violations (MCL exceedances or treatment failures), 264 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MENOMONEE FALLS WW - GROUNDWATER water? ▼
No PFAS testing data is available for MENOMONEE FALLS WW - GROUNDWATER under the EPA's UCMR5 monitoring program.
What water source does MENOMONEE FALLS WW - GROUNDWATER use? ▼
MENOMONEE FALLS WW - GROUNDWATER 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.

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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.

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