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Community Water System · PWS WI6030142

Turtle Lake Waterworks

Turtle Lake, Wisconsin 54889 - drinking water served from groundwater sources to 1,073 people, tracked in EPA SDWIS and UCMR5.

1,073
People served
143
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 143 drinking-water violations at Turtle Lake Waterworks, 8% of them health-based - above the Wisconsin per-system average.

143
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
1,073
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Turtle Lake Waterworks

Turtle Lake Waterworks is a local-owned community water system that delivers drinking water to 1,073 residents in Turtle Lake, Wisconsin (Barron County) through 397 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 143 total violations for this system , of which 12 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 127 monitoring and reporting violations are on file. The most recent violation on record dates to 2015.

The most frequently cited contaminant at this system is Arsenic, recorded in 12 violations (MCL, health-based). 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%).

Turtle Lake Waterworks's 143 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
1,073
Total Violations
143
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
397
County
Barron
School/Daycare
No
MCL Violations
12
Monitoring Violations
127
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 12 2011
Gross Alpha, Excl. Radon and U MR 9 2015
1,2,4-Trichlorobenzene MR 5 2010
Xylenes, Total MR 5 2010
DICHLOROMETHANE MR 5 2010
o-Dichlorobenzene MR 5 2010
1,1-Dichloroethylene MR 5 2010
trans-1,2-Dichloroethylene MR 5 2010
Carbon tetrachloride MR 5 2010
1,2-Dichloropropane MR 5 2010
Trichloroethylene MR 5 2010
Tetrachloroethylene MR 5 2010
CHLOROBENZENE MR 5 2010
Benzene MR 5 2010
Toluene MR 5 2010
Styrene MR 5 2010
Coliform (TCR) MR 5 1995
1,1,2-Trichloroethane MR 5 2010
cis-1,2-Dichloroethylene MR 5 2010
1,1,1-Trichloroethane MR 5 2010
Vinyl chloride MR 5 2010
Ethylbenzene MR 5 2010
1,2-Dichloroethane MR 5 2010
p-Dichlorobenzene MR 5 2010
Radium-228 MR 4 2015
Combined Radium (-226 and -228) MR 4 2015

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 Turtle Lake Waterworks.

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 WI6030142 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 Turtle Lake Waterworks 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
2015 Gross Alpha, Excl. Radon and U MR 9 SDWIS / WI6030142 / 4000
2015 Radium-228 MR 4 SDWIS / WI6030142 / 4030
2015 Combined Radium (-226 and -228) MR 4 SDWIS / WI6030142 / 4010
2011 Arsenic MCL 12 SDWIS / WI6030142 / 1005
2010 1,2,4-Trichlorobenzene MR 5 SDWIS / WI6030142 / 2378
2010 Xylenes, Total MR 5 SDWIS / WI6030142 / 2955
2010 DICHLOROMETHANE MR 5 SDWIS / WI6030142 / 2964
2010 o-Dichlorobenzene MR 5 SDWIS / WI6030142 / 2968
2010 1,1-Dichloroethylene MR 5 SDWIS / WI6030142 / 2977
2010 trans-1,2-Dichloroethylene MR 5 SDWIS / WI6030142 / 2979
2010 Carbon tetrachloride MR 5 SDWIS / WI6030142 / 2982
2010 1,2-Dichloropropane MR 5 SDWIS / WI6030142 / 2983
2010 Trichloroethylene MR 5 SDWIS / WI6030142 / 2984
2010 Tetrachloroethylene MR 5 SDWIS / WI6030142 / 2987
2010 CHLOROBENZENE MR 5 SDWIS / WI6030142 / 2989

How Turtle Lake Waterworks Compares

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

Metric Turtle Lake Waterworks Wisconsin avg Federal benchmark
Total violations 143 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 1,073 467 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 Turtle Lake Waterworks water safe to drink? ▼
Turtle Lake Waterworks (PWS ID: WI6030142) has 143 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,073 people using Groundwater sources.
How many people does Turtle Lake Waterworks serve? ▼
Turtle Lake Waterworks serves 1,073 people in Turtle Lake, Wisconsin. It is a Local-owned system using Groundwater water sources with 397 service connections.
What type of violations does Turtle Lake Waterworks have? ▼
Turtle Lake Waterworks has 143 total violations: 12 health-based violations (MCL exceedances or treatment failures), 127 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Turtle Lake Waterworks water? ▼
No PFAS testing data is available for Turtle Lake Waterworks under the EPA's UCMR5 monitoring program.
What water source does Turtle Lake Waterworks use? ▼
Turtle Lake Waterworks 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.