States ›Minnesota ›Le Sueur County ›Ottawa

Ottawa, MN Tap Water Quality 2026

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

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

Main Utility: Lesueur PWSID: MN1400010 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. No PFAS was detected.

A

Ottawa earns an A for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS tested, none detected
1 violations since 2015, 0 health-based
No violations currently open
Ottawa's lead level vs. all Minnesota community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Minnesota utilities
Population Served
~1570 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
1 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2023 Resolved
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

1 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Lesueur
PWSID MN1400010
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served
Service connections 1,570
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Ottawa tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Ottawa water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Ottawa? ▼
Lesueur (PWSID MN1400010). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-08-21. No significant deficiencies were recorded.

What Should Ottawa 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.

Nearby Cities in Minnesota

Le Sueur, Mn Tap Water Quality 2026 Le Sueur Montgomery, Mn Tap Water Quality 2026 Le Sueur Le Center, Mn Tap Water Quality 2026 Le Sueur Waterville, Mn Tap Water Quality 2026 Le Sueur Cleveland, Mn Tap Water Quality 2026 Le Sueur Elysian, Mn Tap Water Quality 2026 Le Sueur