North Dakota

Water quality data from the EPA Safe Drinking Water Information System

Lead Risk: Caution

Water Systems

1,606

Active public water systems

Population Served

751.2K

Residents with piped water

Lead Violations

Systems exceeding 15 ppb

Copper Violations

115

Lead & Copper Rule

Average Lead Level

1.95 ppb

EPA Action Level: 15 ppb

MCLG (health goal): 0 ppb

0 ppbAction Level: 15 ppb

Average across 452 systems with reported lead data.

Violations Detected

120 water systems in North Dakota have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.

5 lead violations115 copper violations

Water Systems: Highest Lead Levels

System Name	City	Population	Lead Level	Status	Sample Date
MINOT CITY OF	MINOT	48,743	13.50 ppb	OK	2024-12-31
JAMESTOWN CITY OF	JAMESTOWN	15,427	10.90 ppb	OK	2023-12-31
GRAND FORKS REGIONAL WTP	GRAND FORKS	57,339	8.91 ppb	OK	2024-12-31
MANDAN CITY OF	MANDAN	21,769	6.22 ppb	OK	2023-12-31
DICKINSON CITY OF	DICKINSON	25,679	5.29 ppb	OK	2025-12-31
BISMARCK CITY OF	BISMARCK	72,417	2.80 ppb	OK	2024-12-31
FARGO CITY OF	FARGO	120,762	2.34 ppb	OK	2023-12-31
BELCOURT-TURTLE MTN RURAL WATER SYSTEM	BELCOURT	13,500	1.50 ppb	OK	2025-06-30
SOUTH CENTRAL RWD NORTH BURLEIGH	BISMARCK	10,400	1.30 ppb	OK	2024-12-31
WEST FARGO CITY OF	WEST FARGO	34,858	0.00 ppb	OK	2023-12-31
WILLISTON CITY OF	WILLISTON	26,426	0.00 ppb	OK	2023-12-31
MINOT AIR FORCE BASE	MINOT AFB	12,461	0.00 ppb	OK	2012-12-31

Showing top 12 of 450 systems with lead data. Action level: 15 ppb.

Systems With Active Violations

These water systems have exceeded EPA limits and must take corrective action.

WEST FARGO CITY OF

WEST FARGO · Pop. 34,858

Copper

Lead: 0.00 ppb (2023-12-31)

BELCOURT-TURTLE MTN RURAL WATER SYSTEM

BELCOURT · Pop. 13,500

Copper

Lead: 1.50 ppb (2025-06-30)

Water Source Types

Groundwater1053 (67%)

Purchased Surface Water250 (16%)

Purchased Groundwater216 (14%)

Surface Water33 (2%)

Purchased GW Under Influence of SW11 (1%)

Groundwater Under Influence of SW2 (0%)

Unknown2 (0%)

Resources

EPA Water Data Reports

Official drinking water data and reports

Lead in Drinking Water

EPA guidance on lead risks and remediation

Learn About Lead Contamination

Health effects, filtering options, and more

Air Quality

Good

Avg AQI

43.5

PM2.5

5.6 µg/m³

Unhealthy Days

Primary Pollutant

Dust, Ozone

AQI 0 (Good)AQI 100 (Moderate)200+

Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.

PFAS Contamination

Low Detection

PFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →

Systems Tested

PFAS Detected

Detection Rate

11.8%

Exceeding MCL (4 ppt)

0(0.0%)

0%Detection rate: 11.8%100%

Highest recorded level: 2 ppt (EPA MCL: 4 ppt). One of three states with no documented above-MCL PFAS detections in UCMR 5 data

Data source:EPA Safe Drinking Water Information System (SDWIS), Lead and Copper Rule monitoring data. Lead levels represent 90th percentile results from the most recent monitoring period. Violations indicate exceedances of EPA action levels requiring corrective action. This tool is for informational purposes only and does not replace your utility's official Consumer Confidence Report.