North Dakota Water Quality Brief
State: North Dakota (ND) Grade: F | Score: 56/100 | National Average: 67/100 (Grade: D) Data as of: 2026-04-30 | Brief generated: 2026-04-30
Key Findings
- North Dakota earned a water quality grade of F with an average score of 56/100 — 11 points below the national average.
- ZipCheckup recorded 395 total violations across 407 ZIP codes, including 30 health-based violations.
- The worst ZIP code in the state (58760) scored only 11/100, while the best (58415) scored 88/100 — a gap of 77 points.
Worst 5 ZIP Codes
| ZIP | City | County | Score | Grade | Violations |
|---|---|---|---|---|---|
| 58760 | Maxbass | Bottineau | 11/100 | F | 12 |
| 58703 | Minot | Ward | 33/100 | F | 2 |
| 58701 | Minot | Ward | 33/100 | F | 2 |
| 58325 | Churchs Ferry | Benson | 35/100 | F | 0 |
| 58856 | Zahl | Williams | 40/100 | D | 0 |
County Breakdown (Worst 3)
| County | Avg Score | Grade | ZIP Count | Worst ZIP |
|---|---|---|---|---|
| Towner | 49/100 | D | 11 | 58365 (Rocklake, 40/100) |
| McHenry | 49/100 | D | 14 | 58762 (Newburg, 40/100) |
| Sargent | 50/100 | D | 7 | 58069 (Stirum, 40/100) |
Violation Summary
| Category | Count |
|---|---|
| Total violations | 395 |
| Health-based violations | 30 |
| Monitoring/Reporting violations | 365 |
| ZIP codes analyzed | 407 |
| Health violations per ZIP (avg) | 0.1 |
Top health-based violation categories:
- Consumer Confidence Report Rule (111 violations across 69 ZIP codes)
- Stage 1 DBP Rule (73 violations across 48 ZIP codes)
- Stage 2 DBP Rule (26 violations across 19 ZIP codes)
PFAS Contamination Status
- PFAS detected in 59 of 87 ZIP codes analyzed (68%).
Comparison to National Average
| Metric | ND | National |
|---|---|---|
| Avg Score | 56/100 | 67/100 |
| Grade | F | D |
| Health violations / ZIP | 0.1 | — |
About This Data
Data: ZipCheckup.com | Sources: EPA SDWIS, FEMA, CDC, Census | License: CC BY 4.0
Press contact: [email protected] General contact: [email protected] State page: https://zipcheckup.com/states/north-dakota/
ZipCheckup.com analyzes drinking water quality, flood risk, lead exposure, and other home safety factors for every US ZIP code using data from 50+ federal sources.