States ›Iowa ›Mitchell County ›Osage

Osage, IA Tap Water Quality 2026

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

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

Main Utility: Osage Municipal Water Supply PWSID: IA6663001 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 11.40 ppb, 76% of the action level and no violations are open. PFAS was detected below the federal limit.

A

Osage earns an A for water quality

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

Lead: 11.40 ppb — 76% of the federal action level
PFAS detected below the federal limit
1 violations since 2015, 0 health-based
No violations currently open
Osage's lead level vs. all Iowa community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 11.40 ppb — 76% of the federal action level
✓ Lower lead than 2% of Iowa utilities
Population Served
3597
~1952 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
76% of EPA action level
11.40 ppb
Action level: 15 ppb
The 90th-percentile lead result is 11.40 ppb, 76% 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)

ContaminantTypeMeasuredLimitPeriodStatus
Groundwater Rule OTHER — — 2016 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 Osage Municipal Water Supply
PWSID IA6663001
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 3,597
Service connections 1,952
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Osage tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 11.40 ppb, 76% of the action level.
Does Osage water have PFAS? ▼
PFAS was detected but stayed below the federal limit.
Who supplies water to Osage? ▼
Osage Municipal Water Supply (PWSID IA6663001). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-06-13. No significant deficiencies were recorded.

What Should Osage Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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 Iowa

St. Ansgar, Ia Tap Water Quality 2026 Mitchell Riceville, Ia Tap Water Quality 2026 Mitchell Stacyville, Ia Tap Water Quality 2026 Mitchell Orchard, Ia Tap Water Quality 2026 Mitchell