PlainWater
States → Wisconsin

Community Water System · PWS WI4600447

Rocky Knoll Health Care Fac

Sheboygan, Wisconsin 53081 - drinking water served from groundwater sources to 564 people, tracked in EPA SDWIS and UCMR5.

564
People served
218
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 218 drinking-water violations at Rocky Knoll Health Care Fac, 4% of them health-based - above the Wisconsin per-system average.

218
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
564
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Rocky Knoll Health Care Fac

Rocky Knoll Health Care Fac is a local-owned community water system that delivers drinking water to 564 residents in Sheboygan, Wisconsin (Sheboygan County) through 208 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 218 total violations for this system , of which 8 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 198 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Gross Alpha, Excl. Radon and U, recorded in 16 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%).

Rocky Knoll Health Care Fac's 218 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
564
Total Violations
218
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
208
County
Sheboygan
School/Daycare
No
MCL Violations
0
Monitoring Violations
198
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Gross Alpha, Excl. Radon and U MR 16 2009
Coliform (TCR) MR 15 2001
Nitrite MR 10 2005
Combined Radium (-226 and -228) MR 10 2009
Radium-228 MR 10 2009
Lead and Copper Rule TT 7 2000
Styrene MR 6 2011
Ethylbenzene MR 6 2011
Tetrachloroethylene MR 6 2011
Trichloroethylene MR 6 2011
1,2-Dichloropropane MR 6 2011
1,2-Dichloroethane MR 6 2011
trans-1,2-Dichloroethylene MR 6 2011
Vinyl chloride MR 6 2011
p-Dichlorobenzene MR 6 2011
o-Dichlorobenzene MR 6 2011
Xylenes, Total MR 6 2011
Nitrate MR 6 1997
Benzene MR 6 2011
1,1-Dichloroethylene MR 6 2011
DICHLOROMETHANE MR 6 2011
1,1,2-Trichloroethane MR 6 2011
cis-1,2-Dichloroethylene MR 6 2011
Carbon tetrachloride MR 6 2011
1,2,4-Trichlorobenzene MR 6 2011
1,1,1-Trichloroethane MR 6 2011
CHLOROBENZENE MR 6 2011
Toluene MR 6 2011
Public Notice Other 5 2024
Lead and Copper Rule MR 5 1994

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 Rocky Knoll Health Care Fac.

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 WI4600447 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 Rocky Knoll Health Care Fac 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
2024 Public Notice Other 5 SDWIS / WI4600447 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / WI4600447 / 5200
2011 Styrene MR 6 SDWIS / WI4600447 / 2996
2011 Ethylbenzene MR 6 SDWIS / WI4600447 / 2992
2011 Tetrachloroethylene MR 6 SDWIS / WI4600447 / 2987
2011 Trichloroethylene MR 6 SDWIS / WI4600447 / 2984
2011 1,2-Dichloropropane MR 6 SDWIS / WI4600447 / 2983
2011 1,2-Dichloroethane MR 6 SDWIS / WI4600447 / 2980
2011 trans-1,2-Dichloroethylene MR 6 SDWIS / WI4600447 / 2979
2011 Vinyl chloride MR 6 SDWIS / WI4600447 / 2976
2011 p-Dichlorobenzene MR 6 SDWIS / WI4600447 / 2969
2011 o-Dichlorobenzene MR 6 SDWIS / WI4600447 / 2968
2011 Xylenes, Total MR 6 SDWIS / WI4600447 / 2955
2011 Benzene MR 6 SDWIS / WI4600447 / 2990
2011 1,1-Dichloroethylene MR 6 SDWIS / WI4600447 / 2977

How Rocky Knoll Health Care Fac Compares

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

Metric Rocky Knoll Health Care Fac Wisconsin avg Federal benchmark
Total violations 218 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 564 467 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 Rocky Knoll Health Care Fac water safe to drink? ▼
Rocky Knoll Health Care Fac (PWS ID: WI4600447) has 218 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 564 people using Groundwater sources.
How many people does Rocky Knoll Health Care Fac serve? ▼
Rocky Knoll Health Care Fac serves 564 people in Sheboygan, Wisconsin. It is a Local-owned system using Groundwater water sources with 208 service connections.
What type of violations does Rocky Knoll Health Care Fac have? ▼
Rocky Knoll Health Care Fac has 218 total violations: 8 health-based violations (MCL exceedances or treatment failures), 198 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Rocky Knoll Health Care Fac water? ▼
No PFAS testing data is available for Rocky Knoll Health Care Fac under the EPA's UCMR5 monitoring program.
What water source does Rocky Knoll Health Care Fac use? ▼
Rocky Knoll Health Care Fac 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.