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Powers Lake, WI Tap Water Quality 2026

Water quality report for Powers Lake, WI — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Powers Lake's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Knolls Water Cooperative PWSID: WI2300145 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 2.45 ppb, 16% of the action level and no violations are open. PFAS has never been sampled at this system.

B

Powers Lake earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 2.45 ppb — 16% of the federal action level
PFAS never sampled at this system
No violations since 2015
No violations currently open
Powers Lake's lead level vs. all Wisconsin community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 2.45 ppb — 16% of the federal action level
✓ Lower lead than 43% of Wisconsin utilities
Population Served
109
~293 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
None on record since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
16% of EPA action level
2.45 ppb
Action level: 15 ppb
The 90th-percentile lead result is 2.45 ppb, 16% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

✓ No violations on record for this water system.
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

No violations are on record for this system since 2015. EPA records violations for every community water system, so this reflects a clean compliance history rather than missing data.

About the Main Water System

Utility Knolls Water Cooperative
PWSID WI2300145
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 109
Service connections 293
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Powers Lake tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 2.45 ppb, 16% of the action level.
Does Powers Lake water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Powers Lake? ▼
Knolls Water Cooperative (PWSID WI2300145), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-08-06. No significant deficiencies were recorded.

What Should Powers Lake Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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