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Water system · PWSID AR0000550

EL DORADO WATERWORKS

EL DORADO, AR · ~17,932 people served

Check your exact address → EL DORADO overview
100
Excellent
PurityRadar safety score

PWSID

AR0000550

State

Arkansas

City

EL DORADO

Population served

17,932

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

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

Lithium

10,800 ppt

limit —

No federal limit

Violations & enforcement

11

Violations on record

0

Unaddressed

10

Health-based

30

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2023. Official EPA record →

Monitoring · Lead & Copper Rule began Nov 2022 Resolved
Max contaminant level (MCL) · EPA contaminant 1094 health-based began Jan 2021 Resolved
Max contaminant level (MCL) · EPA contaminant 1094 health-based began Oct 2020 Resolved
Max contaminant level (MCL) · EPA contaminant 1094 health-based began Jul 2020 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2009 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2003 Resolved

Recent enforcement actions

  • State action · SOX Mar 2023
  • State action · SOX May 2022
  • State action · SOX May 2022
  • State action · SIF Mar 2021
  • State action · SFL Feb 2021
  • State action · SIF Jan 2021
  • State action · SFJ Nov 2020
  • State action · SOX Apr 2011

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

3 stations · latest Feb 2025

0.158 · max 0.733 mg/L · 72

Copper

3 stations · latest Feb 2025

2.3 · max 7.46 ug/L · 71

Lead

3 stations · latest Feb 2025

1.41 · max 7.32 ug/L · 51

Fluoride

3 stations · latest Nov 2024

0.13 · max 0.26 mg/L · 34

Arsenic

3 stations · latest Nov 2024

1.23 · max 2.43 ug/L · 30

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 AR0000550 — 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.