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Community Water System · PWS WI6170445

Shady Oaks MHP

Spring Valley, Wisconsin 54767 - drinking water served from groundwater sources to 40 people, tracked in EPA SDWIS and UCMR5.

40
People served
825
EPA violations
73
Health-based
Untested
UCMR5 result

The verdict

EPA records 825 drinking-water violations at Shady Oaks MHP, 9% of them health-based - above the Wisconsin per-system average.

825
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
40
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Shady Oaks MHP

Shady Oaks MHP is a private-owned community water system that delivers drinking water to 40 residents in Spring Valley, Wisconsin (Dunn County) through 23 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 825 total violations for this system , of which 73 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 629 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 213 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%).

Shady Oaks MHP's 825 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
40
Total Violations
825
Health-Based Violations
73
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
23
County
Dunn
School/Daycare
No
MCL Violations
43
Monitoring Violations
629
Treatment Tech Violations
30

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 213 2011
Public Notice Other 98 2020
Nitrate MR 83 2012
Lead and Copper Rule MR 27 2020
Nitrate MCL 26 2013
Groundwater Rule TT 25 2019
Consumer Confidence Rule Other 22 2019
Coliform (TCR) MCL 17 1999
Gross Alpha, Excl. Radon and U MR 13 2019
Radium-228 MR 13 2019
Combined Radium (-226 and -228) MR 13 2019
Xylenes, Total MR 7 2009
DICHLOROMETHANE MR 7 2009
o-Dichlorobenzene MR 7 2009
p-Dichlorobenzene MR 7 2009
Vinyl chloride MR 7 2009
trans-1,2-Dichloroethylene MR 7 2009
1,2-Dichloroethane MR 7 2009
1,2-Dichloropropane MR 7 2009
1,1,2-Trichloroethane MR 7 2009
Tetrachloroethylene MR 7 2009
Toluene MR 7 2009
Ethylbenzene MR 7 2009
Styrene MR 7 2009
ETHYLENE DIBROMIDE MR 7 2009
Arsenic MR 7 2009
Barium MR 7 2009
Cadmium MR 7 2009
Chromium MR 7 2009
Nitrate-Nitrite MR 7 2009

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 Shady Oaks 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 WI6170445 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 Shady Oaks 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
2025 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / WI6170445 / 5200
2021 Revised Total Coliform Rule MON 6 SDWIS / WI6170445 / 8000
2020 Public Notice Other 98 SDWIS / WI6170445 / 7500
2020 Lead and Copper Rule MR 27 SDWIS / WI6170445 / 5000
2019 Groundwater Rule TT 25 SDWIS / WI6170445 / 0700
2019 Consumer Confidence Rule Other 22 SDWIS / WI6170445 / 7000
2019 Gross Alpha, Excl. Radon and U MR 13 SDWIS / WI6170445 / 4000
2019 Radium-228 MR 13 SDWIS / WI6170445 / 4030
2019 Combined Radium (-226 and -228) MR 13 SDWIS / WI6170445 / 4010
2019 Combined Uranium MR 6 SDWIS / WI6170445 / 4006
2019 Radium-226 MR 3 SDWIS / WI6170445 / 4020
2013 Nitrate MCL 26 SDWIS / WI6170445 / 1040
2012 Nitrate MR 83 SDWIS / WI6170445 / 1040
2011 Coliform (TCR) MR 213 SDWIS / WI6170445 / 3100
2009 Xylenes, Total MR 7 SDWIS / WI6170445 / 2955

How Shady Oaks MHP Compares

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

Metric Shady Oaks MHP Wisconsin avg Federal benchmark
Total violations 825 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 73 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 40 467 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 Shady Oaks MHP water safe to drink? ▼
Shady Oaks MHP (PWS ID: WI6170445) has 825 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40 people using Groundwater sources.
How many people does Shady Oaks MHP serve? ▼
Shady Oaks MHP serves 40 people in Spring Valley, Wisconsin. It is a Private-owned system using Groundwater water sources with 23 service connections.
What type of violations does Shady Oaks MHP have? ▼
Shady Oaks MHP has 825 total violations: 73 health-based violations (MCL exceedances or treatment failures), 629 monitoring/reporting violations, and 30 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Shady Oaks MHP water? ▼
No PFAS testing data is available for Shady Oaks MHP under the EPA's UCMR5 monitoring program.
What water source does Shady Oaks MHP use? ▼
Shady Oaks 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.