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Creston, IA Tap Water Quality 2026

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

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

Main Utility: Creston Water Supply PWSID: IA8816089 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 7.00 ppb, 47% of the action level and no violations are open. No PFAS was detected.

C

Creston earns a C for water quality

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

Lead: 7.00 ppb — 47% of the federal action level
PFAS tested, none detected
6 violations since 2015, 2 health-based
No violations currently open
Creston's lead level vs. all Iowa community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 7.00 ppb — 47% of the federal action level
✓ Lower lead than 7% of Iowa utilities
Population Served
7532
~3300 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
6 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
47% of EPA action level
7.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 7.00 ppb, 47% 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
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2019 Resolved
Nitrite MONITORING AND REPORTING — 1 mg/L 2019 Resolved
Epichlorohydrin TREATMENT TECHNIQUE — TT 2018 Resolved
Epichlorohydrin TREATMENT TECHNIQUE — TT 2017 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2016 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 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

6 violations are on record since 2015, of which 2 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Creston Water Supply
PWSID IA8816089
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 7,532
Service connections 3,300
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Creston tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 7.00 ppb, 47% of the action level.
Does Creston water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Creston? ▼
Creston Water Supply (PWSID IA8816089). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2023-12-18. Inspectors recorded 1 significant deficiency.

What Should Creston 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

Cromwell, Ia Tap Water Quality 2026 Union