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Belcourt, ND Tap Water Quality 2026

Water quality report for Belcourt, ND — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Belcourt's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Belcourt-Turtle Mtn Rural Water System PWSID: 083890023 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.70 ppb, 11% of the action level and no violations are open. No PFAS was detected.

B

Belcourt earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.70 ppb — 11% of the federal action level
PFAS tested, none detected
53 violations since 2015, 1 health-based
No violations currently open
Belcourt's lead level vs. all North Dakota community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.70 ppb — 11% of the federal action level
✓ Lower lead than 56% of North Dakota utilities
Population Served
1510
~3140 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
53 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
11% of EPA action level
1.70 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
110% of EPA action level
1,430 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 1.70 ppb, 11% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Asbestos MONITORING AND REPORTING — 7 MFL 2024 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2024 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2024 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2023 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2023 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2023 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2023 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2023 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2023 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2023 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2023 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2023 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2023 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2023 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2023 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2023 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2023 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2023 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2023 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2023 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2023 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2023 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2023 Resolved
LASSO MONITORING AND REPORTING — — 2023 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2023 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2023 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2023 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2023 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2023 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2023 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2023 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2023 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2023 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2023 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2023 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2022 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2022 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2020 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2020–2022 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2016–2024 Archived
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2016–2024 Archived
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016–2024 Archived
Radium-226 MONITORING AND REPORTING — — 2016–2024 Archived
Radium-228 MONITORING AND REPORTING — — 2016–2024 Archived
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

53 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Belcourt-Turtle Mtn Rural Water System
PWSID 083890023
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 1,510
Service connections 3,140
Systems serving this area 1
Regulator US EPA (tribal primacy)
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Belcourt tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.70 ppb, 11% of the action level.
Does Belcourt water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Belcourt? ▼
Belcourt-Turtle Mtn Rural Water System (PWSID 083890023). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-10-21. No significant deficiencies were recorded.

What Should Belcourt Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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