COLLINS COLONY

IROQUOIS, SD · ~95 people served

Check your exact address → IROQUOIS overview

100

Excellent

PurityRadar safety score

PWSID

SD4602358

State

South Dakota

City

IROQUOIS

Population served

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

Violations on record

Unaddressed

Health-based

106

Enforcement actions

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

Monitoring & reporting · Gross alpha began Jan 2022 Resolved

Monitoring & reporting · Uranium began Jan 2022 Resolved

Monitoring & reporting · Combined radium-226/228 began Jan 2022 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2992 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2955 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2982 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2989 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 2985 began Jan 2019 Resolved

Recent enforcement actions

State action · SOX Feb 2023
State action · SOX Feb 2023
State action · SOX Feb 2023
State action · SIE Jan 2023
State action · SIE Jan 2023
State action · SIE Jan 2023
State action · SOX Feb 2020
State action · SOX Feb 2020

This profile is built from EPA public records for system SD4602358 — 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.