EUREKA

EUREKA, SD · ~813 people served

Check your exact address → EUREKA overview

100

Excellent

PurityRadar safety score

PWSID

SD4600121

State

South Dakota

City

EUREKA

Population served

813

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved

Treatment technique · EPA contaminant 0400 health-based began Jan 2018 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2013 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2010 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1998 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 1995 Resolved

Recent enforcement actions

State action · SOX Sep 2024
State action · SIE Dec 2023
State action · SOX Nov 2018
State action · SIA Apr 2018
State action · SOX Mar 2013
State action · SIA Mar 2013
State action · SOX Mar 2010
State action · SIA Feb 2010

This profile is built from EPA public records for system SD4600121 — 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.