Is North Dakota Tap Water Safe to Drink?
Water quality data for 6 cities across North Dakota. Find your city below.
Water quality in North Dakota varies significantly from city to city. Across 6 cities we track, hardness ranges from 230 PPM in Fargo to 310 PPM in Dickinson, with a statewide average of 270 PPM. 6 of 6 cities have hard water above 120 PPM where a water softener provides measurable benefits.
6
Cities
270
Avg Hardness (PPM)
310
Hardest City (PPM)
Complete North Dakota Guide
Statewide water quality overview, costs, and treatment recommendations.
Well Water in North Dakota
Testing, treatment, and common issues for private wells.
Hardest Water Rankings
North Dakota cities ranked by water hardness level.
City Comparisons
Dickinson vs Fargo
Side-by-side water quality comparison.
Dickinson vs Bismarck
Side-by-side water quality comparison.
Bismarck vs Minot
Side-by-side water quality comparison.
North Dakota Cities by Water Hardness
| City | Hardness (PPM) | Level | PFAS (ppt) | Source |
|---|---|---|---|---|
| Dickinson | 310 | Extremely Hard | 0 | Patterson Lake & wells |
| Bismarck | 299 | Extremely Hard | 0 | Missouri River |
| Minot | 280 | Extremely Hard | 0 | Souris River & wells |
| Grand Forks | 259 | Extremely Hard | 8.8 | Red River of the North |
| West Fargo | 240 | Very Hard | 0 | Red River & Sheyenne River |
| Fargo | 230 | Very Hard | 0 | Red River + Sheyenne River |
Frequently Asked Questions About North Dakota Water
Is North Dakota tap water safe to drink?
North Dakota tap water meets EPA legal standards in most cities. The statewide average hardness of 270 PPM means most homes deal with hard water effects like scale buildup, though hardness is not a health concern. Check your specific city above for detailed data.
Do I need a water softener in North Dakota?
Most North Dakota cities would benefit from a water softener. The state average is 270 PPM, and 100% of cities exceed 120 PPM where softener benefits become measurable. A salt-based softener reduces scale damage, energy waste, and product use.
Which North Dakota city has the hardest water?
Dickinson has the hardest water in North Dakota at 310 PPM (18.1 GPG). Bismarck is second at 299 PPM. See the full ranking.
What contaminants are in North Dakota water?
The most common concerns across North Dakota are hard water minerals (calcium and magnesium). Each city has different levels - check your city above for specific contaminant data.
How much does a water softener cost in North Dakota?
A whole-house water softener for a typical North Dakota home costs $800-$2,500 installed, depending on capacity and brand. At 270 PPM average hardness, most homes need a 32,000-48,000 grain system. Full cost breakdown.