Home/ Directory/ OH/ DELAWARE CITY PWS

Water system · PWSID OH2100311

DELAWARE CITY PWS

DELAWARE, OH · ~43,895 people served

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

PWSID

OH2100311

State

Ohio

City

DELAWARE

Population served

43,895

Primary source

Surface water

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

Latest detections from EPA’s UCMR5 monitoring (through May 2023). Levels in parts per trillion (ppt).

Lithium

15,400 ppt

limit —

No federal limit

Violations & enforcement

5

Violations on record

1

Unaddressed

3

Health-based

16

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2025. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2013 Resolved
Monitoring & reporting · EPA contaminant 0200 began Feb 2009 Resolved

Recent enforcement actions

  • State action · SIE Oct 2025
  • State action · SIA Oct 2025
  • State action · SIF Aug 2014
  • State action · SOX Jul 2014
  • State action · SIA May 2014
  • State action · SIE May 2014
  • State action · SIF Apr 2014
  • State action · SIE Feb 2014

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

Manganese

2 stations · latest Sep 2024

52.8 · max 183 ug/L · 20

Copper

2 stations · latest Sep 2024

2.46 · max 2.82 ug/L · 16

Arsenic

2 stations · latest Sep 2024

3.31 · max 5.26 ug/L · 10

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 OH2100311 — 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.