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Non-Transient Non-Community Water System · PWS WI1134246

Dane Co Hwy Garage East

Madison, Wisconsin 53713 - drinking water served from groundwater sources to 55 people, tracked in EPA SDWIS and UCMR5.

55
People served
88
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 88 drinking-water violations at Dane Co Hwy Garage East - above the Wisconsin per-system average.

88
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
55
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Dane Co Hwy Garage East

Dane Co Hwy Garage East is a local-owned non-transient non-community water system that delivers drinking water to 55 residents in Madison, Wisconsin (Dane County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 88 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 88 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Xylenes, Total, recorded in 4 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. Statewide, 51 of 202 UCMR5-tested systems have reported PFAS detections (25.2%).

Dane Co Hwy Garage East's 88 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
55
Total Violations
88
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Dane
School/Daycare
No
MCL Violations
0
Monitoring Violations
88
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Xylenes, Total MR 4 2019
o-Dichlorobenzene MR 4 2019
1,2,4-Trichlorobenzene MR 4 2019
p-Dichlorobenzene MR 4 2019
Vinyl chloride MR 4 2019
trans-1,2-Dichloroethylene MR 4 2019
1,2-Dichloropropane MR 4 2019
1,1,2-Trichloroethane MR 4 2019
CHLOROBENZENE MR 4 2019
Ethylbenzene MR 4 2019
cis-1,2-Dichloroethylene MR 4 2019
1,1-Dichloroethylene MR 4 2019
Trichloroethylene MR 4 2019
Styrene MR 4 2019
DICHLOROMETHANE MR 4 2019
1,2-Dichloroethane MR 4 2019
Toluene MR 4 2019
Benzene MR 4 2019
Carbon tetrachloride MR 4 2019
Revised Total Coliform Rule MON 4 2019
1,1,1-Trichloroethane MR 4 2019
Tetrachloroethylene MR 4 2019

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 Dane Co Hwy Garage East.

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 WI1134246 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 Dane Co Hwy Garage East 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
2019 Xylenes, Total MR 4 SDWIS / WI1134246 / 2955
2019 o-Dichlorobenzene MR 4 SDWIS / WI1134246 / 2968
2019 1,2,4-Trichlorobenzene MR 4 SDWIS / WI1134246 / 2378
2019 p-Dichlorobenzene MR 4 SDWIS / WI1134246 / 2969
2019 Vinyl chloride MR 4 SDWIS / WI1134246 / 2976
2019 trans-1,2-Dichloroethylene MR 4 SDWIS / WI1134246 / 2979
2019 1,2-Dichloropropane MR 4 SDWIS / WI1134246 / 2983
2019 1,1,2-Trichloroethane MR 4 SDWIS / WI1134246 / 2985
2019 CHLOROBENZENE MR 4 SDWIS / WI1134246 / 2989
2019 Ethylbenzene MR 4 SDWIS / WI1134246 / 2992
2019 cis-1,2-Dichloroethylene MR 4 SDWIS / WI1134246 / 2380
2019 1,1-Dichloroethylene MR 4 SDWIS / WI1134246 / 2977
2019 Trichloroethylene MR 4 SDWIS / WI1134246 / 2984
2019 Styrene MR 4 SDWIS / WI1134246 / 2996
2019 DICHLOROMETHANE MR 4 SDWIS / WI1134246 / 2964

How Dane Co Hwy Garage East Compares

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

Metric Dane Co Hwy Garage East Wisconsin avg Federal benchmark
Total violations 88 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 25.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 55 467 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 Dane Co Hwy Garage East water safe to drink? ▼
Dane Co Hwy Garage East (PWS ID: WI1134246) has 88 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 55 people using Groundwater sources.
How many people does Dane Co Hwy Garage East serve? ▼
Dane Co Hwy Garage East serves 55 people in Madison, Wisconsin. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Dane Co Hwy Garage East have? ▼
Dane Co Hwy Garage East has 88 total violations: 0 health-based violations (MCL exceedances or treatment failures), 88 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Dane Co Hwy Garage East water? ▼
No PFAS testing data is available for Dane Co Hwy Garage East under the EPA's UCMR5 monitoring program.
What water source does Dane Co Hwy Garage East use? ▼
Dane Co Hwy Garage East uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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. 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.