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MUSCODA WATERWORKS

PWS ID: WI1220112 · MUSCODA, Wisconsin 53573-0206

MUSCODA WATERWORKS serves 1,453 people in MUSCODA, Wisconsin using Groundwater water sources. It has 123 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MUSCODA WATERWORKS

MUSCODA WATERWORKS is a local-owned community water system that delivers drinking water to 1,453 residents in MUSCODA, Wisconsin (Grant County) through 538 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 123 total violations for this system , of which 9 (7%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 110 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is Coliform (TCR), 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. MUSCODA WATERWORKS's 123 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
1,453
Total Violations
123
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
538
County
Grant
School/Daycare
No
MCL Violations
5
Monitoring Violations
110
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 12 2003
Coliform (TCR) MCL 5 1998
Lead and Copper Rule TT 4 2000
Revised Total Coliform Rule MON 4 2016
1,1-Dichloroethylene MR 4 1994
1,1,1-Trichloroethane MR 4 1994
1,2-Dichloropropane MR 4 1994
1,1,2-Trichloroethane MR 4 1994
Tetrachloroethylene MR 4 1994
cis-1,2-Dichloroethylene MR 4 1994
trans-1,2-Dichloroethylene MR 4 1994
Nitrate MR 4 1994
Carbon tetrachloride MR 4 1994
1,2-Dichloroethane MR 4 1994
Benzene MR 4 1994
1,2,4-Trichlorobenzene MR 4 1994
CHLOROBENZENE MR 4 1994
Xylenes, Total MR 4 1994
DICHLOROMETHANE MR 4 1994
o-Dichlorobenzene MR 4 1994
Styrene MR 4 1994
p-Dichlorobenzene MR 4 1994
Trichloroethylene MR 4 1994
Ethylbenzene MR 4 1994
Toluene MR 4 1994
Vinyl chloride MR 4 1994
Lead and Copper Rule MR 2 2012
Atrazine MR 2 1994
Gross Alpha, Excl. Radon and U MR 2 1994
Consumer Confidence Rule Other 1 2012

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 MUSCODA WATERWORKS.

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 WI1220112 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 MUSCODA WATERWORKS 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
2016 Revised Total Coliform Rule MON 4 SDWIS / WI1220112 / 8000
2012 Lead and Copper Rule MR 2 SDWIS / WI1220112 / 5000
2012 Consumer Confidence Rule Other 1 SDWIS / WI1220112 / 7000
2003 Coliform (TCR) MR 12 SDWIS / WI1220112 / 3100
2000 Lead and Copper Rule TT 4 SDWIS / WI1220112 / 5000
1998 Coliform (TCR) MCL 5 SDWIS / WI1220112 / 3100
1994 1,1-Dichloroethylene MR 4 SDWIS / WI1220112 / 2977
1994 1,1,1-Trichloroethane MR 4 SDWIS / WI1220112 / 2981
1994 1,2-Dichloropropane MR 4 SDWIS / WI1220112 / 2983
1994 1,1,2-Trichloroethane MR 4 SDWIS / WI1220112 / 2985
1994 Tetrachloroethylene MR 4 SDWIS / WI1220112 / 2987
1994 cis-1,2-Dichloroethylene MR 4 SDWIS / WI1220112 / 2380
1994 trans-1,2-Dichloroethylene MR 4 SDWIS / WI1220112 / 2979
1994 Nitrate MR 4 SDWIS / WI1220112 / 1040
1994 Carbon tetrachloride MR 4 SDWIS / WI1220112 / 2982

How MUSCODA WATERWORKS Compares

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

Metric MUSCODA WATERWORKS Wisconsin avg Federal benchmark
Total violations 123 26 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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 1,453 467 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 MUSCODA WATERWORKS water safe to drink? ▼
MUSCODA WATERWORKS (PWS ID: WI1220112) has 123 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,453 people using Groundwater sources.
How many people does MUSCODA WATERWORKS serve? ▼
MUSCODA WATERWORKS serves 1,453 people in MUSCODA, Wisconsin. It is a Local-owned system using Groundwater water sources with 538 service connections.
What type of violations does MUSCODA WATERWORKS have? ▼
MUSCODA WATERWORKS has 123 total violations: 9 health-based violations (MCL exceedances or treatment failures), 110 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MUSCODA WATERWORKS water? ▼
No PFAS testing data is available for MUSCODA WATERWORKS under the EPA's UCMR5 monitoring program.
What water source does MUSCODA WATERWORKS use? ▼
MUSCODA WATERWORKS 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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