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Water system · PWSID 084690475

PINE RIDGE WATER SYSTEM

PINE RIDGE, SD · ~7,482 people served

Check your exact address → PINE RIDGE overview
100
Excellent
PurityRadar safety score

PWSID

084690475

State

South Dakota

City

PINE RIDGE

Population served

7,482

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 Jul 2023). Levels in parts per trillion (ppt).

Lithium

39,600 ppt

limit —

No federal limit

Violations & enforcement

3

Violations on record

0

Unaddressed

2

Health-based

3

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Dec 2023 Resolved
Max contaminant level (MCL) · Combined radium-226/228 health-based began Oct 2019 Resolved
Treatment technique · EPA contaminant 0700 health-based began Jul 2018 Resolved

Recent enforcement actions

  • State action · SOX Oct 2023
  • State action · SO0 Feb 2020
  • State action · SIA Sep 1981

This profile is built from EPA public records for system 084690475 — 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.