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States → EPA Region 7 — Tribal Water Systems

Community Water System · PWS 070000010

Winnebago Tribe- Thunder Way Housing

Winnebago, EPA Region 7 — Tribal Water Systems 68071 - drinking water served from groundwater sources to 160 people, tracked in EPA SDWIS and UCMR5.

160
People served
76
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 76 drinking-water violations at Winnebago Tribe- Thunder Way Housing, 20% of them health-based.

76
Total EPA violations on record
20%
Health-based (MCL / treatment failure)
160
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Winnebago Tribe- Thunder Way Housing

Winnebago Tribe- Thunder Way Housing is a federal-owned community water system that delivers drinking water to 160 residents in Winnebago, EPA Region 7 — Tribal Water Systems through 57 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 76 total violations for this system , of which 15 (20%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 27 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 15 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 7 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
160
Total Violations
76
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Federal
Connections
57
School/Daycare
No
MCL Violations
15
Monitoring Violations
27
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 15 2010
Coliform (TCR) MCL 7 1991
Lead and Copper Rule MR 6 2011
Gross Alpha, Excl. Radon and U MCL 4 1988
Combined Radium (-226 and -228) MCL 4 1988
Public Notice Other 4 2021
TTHM MR 3 2020
Total Haloacetic Acids (HAA5) MR 3 2020

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 Winnebago Tribe- Thunder Way Housing.

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 070000010 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 7 — Tribal Water Systems Drinking Water Authority

EPA Region 7 — Tribal Water Systems's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 07 regulator via EPA SDWIS

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
2021 Public Notice Other 4 SDWIS / 070000010 / 7500
2020 TTHM MR 3 SDWIS / 070000010 / 2950
2020 Total Haloacetic Acids (HAA5) MR 3 SDWIS / 070000010 / 2456
2011 Lead and Copper Rule MR 6 SDWIS / 070000010 / 5000
2010 Coliform (TCR) MR 15 SDWIS / 070000010 / 3100
1991 Coliform (TCR) MCL 7 SDWIS / 070000010 / 3100
1988 Gross Alpha, Excl. Radon and U MCL 4 SDWIS / 070000010 / 4000
1988 Combined Radium (-226 and -228) MCL 4 SDWIS / 070000010 / 4010

How Winnebago Tribe- Thunder Way Housing Compares

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

Metric Winnebago Tribe- Thunder Way Housing EPA Region 7 — Tribal Water Systems avg Federal benchmark
Total violations 76 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 160 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 7 — Tribal Water Systems.

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 Winnebago Tribe- Thunder Way Housing water safe to drink? ▼
Winnebago Tribe- Thunder Way Housing (PWS ID: 070000010) has 76 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 160 people using Groundwater sources.
How many people does Winnebago Tribe- Thunder Way Housing serve? ▼
Winnebago Tribe- Thunder Way Housing serves 160 people in Winnebago, EPA Region 7 — Tribal Water Systems. It is a Federal-owned system using Groundwater water sources with 57 service connections.
What type of violations does Winnebago Tribe- Thunder Way Housing have? ▼
Winnebago Tribe- Thunder Way Housing has 76 total violations: 15 health-based violations (MCL exceedances or treatment failures), 27 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Winnebago Tribe- Thunder Way Housing water? ▼
No PFAS testing data is available for Winnebago Tribe- Thunder Way Housing under the EPA's UCMR5 monitoring program.
What water source does Winnebago Tribe- Thunder Way Housing use? ▼
Winnebago Tribe- Thunder Way Housing 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. 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.