Nevada tap water
3 of 37 Nevada water systems with full PFAS testing (8%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 193 active community water systems in the EPA file; 35 serve 3,300+ people and have a full PFAS set.
- 39 systems had at least one health-based violation since 2021-10-26.
- 0 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| Las Vegas Valley Water District | 1,539,277 | No | 0 |
| Truckee Meadows Water Authority | 442,000 | Yes, at one or more sampling points | 0 |
| North Las Vegas Utilities | 376,515 | No | 0 |
| Henderson City of | 336,534 | No | 0 |
| Carson City Public Works | 59,000 | No | 0 |
| Virgin Valley Water District | 26,000 | No | 0 |
| Fernley Public Works | 23,064 | Yes, at one or more sampling points | 1 |
| Elko City of | 23,000 | Yes, at one or more sampling points | 0 |
Counties
All 5 utilities with a page in Nevada
- Carson City Public Works 59,000
- Henderson City of 336,534
- Las Vegas Valley Water District 1,539,277
- North Las Vegas Utilities 376,515
- Truckee Meadows Water Authority 442,000
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.