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Water system · PWSID OK3003601

KAY COUNTY RURAL WATER DISTRICT 7

BLACKWELL, OK · ~920 people served

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

PWSID

OK3003601

State

Oklahoma

City

BLACKWELL

Population served

920

Primary source

SWP

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

24

Violations on record

0

Unaddressed

19

Health-based

78

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2024. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2023 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2023 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2022 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2013 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2011 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2011 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2010 Resolved

Recent enforcement actions

  • State action · SOX Mar 2024
  • State action · SOX Mar 2024
  • State action · SOX Mar 2024
  • State action · SIF Dec 2023
  • State action · SIE Nov 2023
  • State action · SFL Nov 2023
  • State action · SIF Aug 2023
  • State action · SIE Aug 2023

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

2 stations · latest May 2024

0.342 · max 1.82 mg/L · 16

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system OK3003601 — 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.