Montana vs North Dakota: Whose Tap Water Is Cleaner?
Tap Water Quality in Montana (82.4/100) vs North Dakota (84.0/100) — a 2% gap between neighbors, explained with July 2026 data.
Montana and North Dakota share a border, but for tap water quality they don't share much else: Montana averages 82.4/100 (rank #30 of 51) and North Dakota averages 84.0/100 (rank #23) as of July 2026 — a 2% gap between neighbors.
| Montana | North Dakota | U.S. benchmark | |
|---|---|---|---|
| Quality score | 82.4/100 | 84.0/100 | 84.5/100 |
| Violations per water system | 1.9 | 1.2 | 2.5 |
Montana in context
Montana lands mid-pack for tap water quality: a score of 82.4/100 ranks #30 of 51, and its water systems averaged 1.9 health-based violations each in 2024 — better than the U.S. average of 2.5.
North Dakota in context
North Dakota lands mid-pack for tap water quality: a score of 84.0/100 ranks #23 of 51, and its water systems averaged 1.2 health-based violations each in 2024 — better than the U.S. average of 2.5.
Full local breakdowns: Montana · North Dakota · all states ranked.
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