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Non-Transient Non-Community Water System · PWS WI6180717

Eau Claire Coop Oil Co

Eau Claire, Wisconsin 54702-0837 - drinking water served from groundwater sources to 80 people, tracked in EPA SDWIS and UCMR5.

80
People served
95
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 95 drinking-water violations at Eau Claire Coop Oil Co - above the Wisconsin per-system average.

95
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
80
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Eau Claire Coop Oil Co

Eau Claire Coop Oil Co is a private-owned non-transient non-community water system that delivers drinking water to 80 residents in Eau Claire, Wisconsin (Eau Claire County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 95 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 93 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 5 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, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Eau Claire Coop Oil Co's 95 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
80
Total Violations
95
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Eau Claire
School/Daycare
No
MCL Violations
0
Monitoring Violations
93
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 5 2017
DICHLOROMETHANE MR 4 2017
o-Dichlorobenzene MR 4 2017
Vinyl chloride MR 4 2017
1,1-Dichloroethylene MR 4 2017
1,2-Dichloroethane MR 4 2017
Carbon tetrachloride MR 4 2017
1,1,2-Trichloroethane MR 4 2017
Tetrachloroethylene MR 4 2017
Benzene MR 4 2017
Toluene MR 4 2017
Ethylbenzene MR 4 2017
Styrene MR 4 2017
trans-1,2-Dichloroethylene MR 4 2017
Xylenes, Total MR 4 2017
cis-1,2-Dichloroethylene MR 4 2017
1,2,4-Trichlorobenzene MR 4 2017
Revised Total Coliform Rule MON 4 2017
CHLOROBENZENE MR 4 2017
p-Dichlorobenzene MR 4 2017
1,1,1-Trichloroethane MR 4 2017
Trichloroethylene MR 4 2017
1,2-Dichloropropane MR 4 2017
Public Notice Other 2 2017

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 Eau Claire Coop Oil Co.

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 WI6180717 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 Eau Claire Coop Oil Co 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
2017 Lead and Copper Rule MR 5 SDWIS / WI6180717 / 5000
2017 DICHLOROMETHANE MR 4 SDWIS / WI6180717 / 2964
2017 o-Dichlorobenzene MR 4 SDWIS / WI6180717 / 2968
2017 Vinyl chloride MR 4 SDWIS / WI6180717 / 2976
2017 1,1-Dichloroethylene MR 4 SDWIS / WI6180717 / 2977
2017 1,2-Dichloroethane MR 4 SDWIS / WI6180717 / 2980
2017 Carbon tetrachloride MR 4 SDWIS / WI6180717 / 2982
2017 1,1,2-Trichloroethane MR 4 SDWIS / WI6180717 / 2985
2017 Tetrachloroethylene MR 4 SDWIS / WI6180717 / 2987
2017 Benzene MR 4 SDWIS / WI6180717 / 2990
2017 Toluene MR 4 SDWIS / WI6180717 / 2991
2017 Ethylbenzene MR 4 SDWIS / WI6180717 / 2992
2017 Styrene MR 4 SDWIS / WI6180717 / 2996
2017 trans-1,2-Dichloroethylene MR 4 SDWIS / WI6180717 / 2979
2017 Xylenes, Total MR 4 SDWIS / WI6180717 / 2955

How Eau Claire Coop Oil Co Compares

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

Metric Eau Claire Coop Oil Co Wisconsin avg Federal benchmark
Total violations 95 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 80 467 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 Eau Claire Coop Oil Co water safe to drink? ▼
Eau Claire Coop Oil Co (PWS ID: WI6180717) has 95 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 80 people using Groundwater sources.
How many people does Eau Claire Coop Oil Co serve? ▼
Eau Claire Coop Oil Co serves 80 people in Eau Claire, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Eau Claire Coop Oil Co have? ▼
Eau Claire Coop Oil Co has 95 total violations: 0 health-based violations (MCL exceedances or treatment failures), 93 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Eau Claire Coop Oil Co water? ▼
No PFAS testing data is available for Eau Claire Coop Oil Co under the EPA's UCMR5 monitoring program.
What water source does Eau Claire Coop Oil Co use? ▼
Eau Claire Coop Oil Co 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.