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Water system · PWSID 084690510

STANDING ROCK RURAL WATER SYSTEM

FORT YATES, ND · ~6,839 people served

Check your exact address → FORT YATES overview
85
Excellent
PurityRadar safety score

PWSID

084690510

State

North Dakota

City

FORT YATES

Population served

6,839

Primary source

Surface water

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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 2024). Levels in parts per trillion (ppt).

Lithium

47,500 ppt

limit —

No federal limit

Violations & enforcement

18

Violations on record

2

Unaddressed

12

Health-based

37

Enforcement actions

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

Treatment technique · EPA contaminant 0800 health-based began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Jul 2024 Unaddressed
Monitoring & reporting · EPA contaminant 0800 began Apr 2023 Resolved
Monitoring & reporting · EPA contaminant 0800 began Dec 2017 Resolved
Monitoring & reporting · EPA contaminant 0200 began Dec 2015 Resolved
Monitoring & reporting · EPA contaminant 0200 began Sep 2012 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2006 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2006 Resolved

Recent enforcement actions

  • State action · SIA Aug 2024
  • State action · SOX Jun 2023
  • State action · SOX Mar 2018
  • State action · SOX Mar 2016
  • State action · SOX Nov 2012
  • State action · SIA Nov 2012
  • State action · SOX Nov 2008
  • State action · SIA Jul 2007

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

Fluoride

6 stations · latest Oct 2023

0.5 · max 1.3 mg/L · 32

Arsenic

4 stations · latest Sep 2023

3.15 · max 7.5 ug/L · 17

Manganese

4 stations · latest Oct 2023

0.152 · max 0.4 mg/L · 13

Lead

3 stations · latest Sep 2023

3.24 · max 4.97 ug/L · 10

Copper

1 station · latest May 2023

2.5 · max 2.5 ug/l · 1

Uranium

1 station · latest May 2023

39.8 · max 39.8 ug/l · 1

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 084690510 — 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.