North Dakota Water Quality Ratings

TapWaterSafety has rated 3 public water systems in North Dakota, serving a combined 250,518 residents. The statewide average grade is D.

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
State average grade
D
67/100
Total utilities rated 3
Population served 250,518

Top water quality concerns in North Dakota

  • Haloacetic acids (HAA9) significantly above health guideline
  • Total trihalomethanes (TTHMs) significantly above health guideline
  • Haloacetic acids (HAA5) significantly above health guideline
  • Bromodichloromethane significantly above health guideline

Cities in North Dakota

Browse tap water quality reports by city. Click any city to see its grade, what's in the water, and recommended filters.

BISMARCK
D 72,417
FARGO
D 120,762
GRAND FORKS
D 57,339

Grade distribution

A
0 (0%)
B
0 (0%)
C
3 (100%)
D
0 (0%)
F
0 (0%)

All rated utilities in North Dakota

Sorted by score, highest first. Click any utility to see the full grade card.

Rank Utility City Population Score Grade
#1 FARGO CITY OF FARGO 120,762 67 C
#2 GRAND FORKS REGIONAL WTP GRAND FORKS 57,339 67 C
#3 BISMARCK CITY OF BISMARCK 72,417 66 C