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Water system · PWSID IA0640030

KEYSTONE WATER SUPPLY

KEYSTONE, IA · ~599 people served

Check your exact address → KEYSTONE overview
100
Excellent
PurityRadar safety score

PWSID

IA0640030

State

Iowa

City

KEYSTONE

Population served

599

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

32

Violations on record

0

Unaddressed

7

Health-based

136

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2021. Official EPA record →

Treatment technique · EPA contaminant 0700 health-based began May 2021 Resolved
Max contaminant level (MCL) · Nitrite health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Nitrite health-based began Nov 2020 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2018 Resolved
Max contaminant level (MCL) · Nitrite health-based began Sep 2018 Resolved
Monitoring & reporting · Nitrate began Jul 2018 Resolved
Monitoring & reporting · Nitrite began Nov 2015 Resolved
Monitoring & reporting · Nitrite began Sep 2013 Resolved
Monitoring & reporting · Total coliform began Aug 2013 Resolved
Monitoring & reporting · Nitrite began Aug 2013 Resolved
Monitoring & reporting · Nitrite began Aug 2013 Resolved
Other · EPA contaminant 7500 began Jul 2013 Resolved

Recent enforcement actions

  • State action · SOX Oct 2021
  • State action · SOX Oct 2021
  • State action · SOX Sep 2021
  • State action · SFJ Jul 2021
  • State action · SIF Apr 2021
  • State action · SIE Apr 2021
  • State action · SFJ Apr 2021
  • State action · SIF Dec 2020

This profile is built from EPA public records for system IA0640030 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.