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Community Water System · PWS WI6180285

Hillcrest Estates MHP

San Francisco, Wisconsin 94115 - drinking water served from groundwater sources to 850 people, tracked in EPA SDWIS and UCMR5.

850
People served
46
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 46 drinking-water violations at Hillcrest Estates MHP, 26% of them health-based - above the Wisconsin per-system average.

46
Total EPA violations on record
26%
Health-based (MCL / treatment failure)
850
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hillcrest Estates MHP

Hillcrest Estates MHP is a private-owned community water system that delivers drinking water to 850 residents in San Francisco, Wisconsin (Eau Claire County) through 314 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 46 total violations for this system , of which 12 (26%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 29 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 17 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%).

Hillcrest Estates MHP's 46 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
850
Total Violations
46
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
314
County
Eau Claire
School/Daycare
No
MCL Violations
0
Monitoring Violations
29
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 17 2003
Lead and Copper Rule MR 8 2022
Groundwater Rule TT 6 2023
Revised Total Coliform Rule TT 4 2022
Revised Total Coliform Rule MON 4 2022
Consumer Confidence Rule Other 2 2013
Lead and Copper Rule TT 2 2010
Public Notice Other 1 2010

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 Hillcrest Estates MHP.

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 WI6180285 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 Hillcrest Estates MHP 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
2023 Groundwater Rule TT 6 SDWIS / WI6180285 / 0700
2022 Lead and Copper Rule MR 8 SDWIS / WI6180285 / 5000
2022 Revised Total Coliform Rule TT 4 SDWIS / WI6180285 / 8000
2022 Revised Total Coliform Rule MON 4 SDWIS / WI6180285 / 8000
2013 Consumer Confidence Rule Other 2 SDWIS / WI6180285 / 7000
2010 Lead and Copper Rule TT 2 SDWIS / WI6180285 / 5000
2010 Public Notice Other 1 SDWIS / WI6180285 / 7500
2003 Coliform (TCR) MR 17 SDWIS / WI6180285 / 3100

How Hillcrest Estates MHP Compares

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

Metric Hillcrest Estates MHP Wisconsin avg Federal benchmark
Total violations 46 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 850 467 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 Hillcrest Estates MHP water safe to drink? ▼
Hillcrest Estates MHP (PWS ID: WI6180285) has 46 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 850 people using Groundwater sources.
How many people does Hillcrest Estates MHP serve? ▼
Hillcrest Estates MHP serves 850 people in San Francisco, Wisconsin. It is a Private-owned system using Groundwater water sources with 314 service connections.
What type of violations does Hillcrest Estates MHP have? ▼
Hillcrest Estates MHP has 46 total violations: 12 health-based violations (MCL exceedances or treatment failures), 29 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hillcrest Estates MHP water? ▼
No PFAS testing data is available for Hillcrest Estates MHP under the EPA's UCMR5 monitoring program.
What water source does Hillcrest Estates MHP use? ▼
Hillcrest Estates MHP 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.