All 34 systems had complete monitoring. 3 reached at least one study comparison level; 31 did not. “Study comparison level” means the dated EPA technical cutoff used in this January 2026 research release. It does not determine household exposure, health risk, or current legal compliance.
Find your water system
ZIP codes are used only to route visitors to public water systems that reported serving them. Confirm the actual provider using a water bill or utility record.
System counts in Nevada
Each count shows how many included water systems reached the named study level.
| Study comparison | Systems reaching level | Water systems included | Percent |
|---|---|---|---|
| PFOA: study level 4.05 ppt (April 2024 EPA level: 4 ppt) | 2 | 34 | 5.9% |
| PFOS: study level 4.05 ppt (April 2024 EPA level: 4 ppt) | 3 | 34 | 8.8% |
| PFHxS: study level 15 ppt (April 2024 EPA level: 10 ppt) | 1 | 34 | 2.9% |
| PFNA: study level 15 ppt (April 2024 EPA level: 10 ppt) | 0 | 34 | 0.0% |
| HFPO-DA: study level 15 ppt (April 2024 EPA level: 10 ppt) | 0 | 34 | 0.0% |
| Hazard Index: study level 1.5 with at least two detected components (April 2024 EPA level: 1) | 1 | 34 | 2.9% |
Community water systems with complete monitoring
Each PWSID appears once, preventing double counting across ZIP associations.
| Public water system | PWSID | Population served | Primary source | Sampling locations | Study comparison |
|---|---|---|---|---|---|
| BIG BEND WATER DISTRICT | NV0004092 | 9,000 | Surface water | 1 | Below the study levels |
| BOULDER CITY | NV0000011 | 15,000 | Surface water purchased | 1 | Below the study levels |
| CARSON CITY PUBLIC WORKS | NV0000015 | 59,000 | Surface water | 7 | Below the study levels |
| CHIPMUNK RETREAT | NV0002554 | 45 | Ground water | 1 | Below the study levels |
| DAYTON VALLEY WATER SYSTEM | NV0000032 | 16,000 | Ground water | 8 | Below the study levels |
| EAST VALLEY WATER SYSTEM | NV0002216 | 6,488 | Ground water | 1 | Below the study levels |
| ELKO CITY OF | NV0000272 | 23,000 | Ground water | 19 | Reached a study level |
| ELY MUNICIPAL WATER DEPARTMENT | NV0000038 | 5,000 | Ground water | 6 | Below the study levels |
| FALLON CITY OF | NV0000045 | 9,184 | Ground water | 1 | Below the study levels |
| FERNLEY PUBLIC WORKS | NV0000062 | 23,064 | Ground water | 1 | Reached a study level |
| GARDNERVILLE RANCHOS GID | NV0000066 | 11,300 | Ground water | 7 | Below the study levels |
| GARDNERVILLE WATER COMPANY | NV0000065 | 5,800 | Ground water | 8 | Below the study levels |
| GREAT BASIN WATER CO COLD SPRINGS | NV0000207 | 9,910 | Ground water | 5 | Below the study levels |
| GREAT BASIN WATER CO SPRING CREEK | NV0000036 | 9,340 | Ground water | 9 | Below the study levels |
| GREAT BASIN WATER CO SPRING CREEK MHP | NV0005027 | 3,640 | Ground water | 3 | Below the study levels |
| GREAT BASIN WATER COMPANY | NV0000270 | 12,255 | Ground water | 5 | Below the study levels |
| HENDERSON CITY OF | NV0000076 | 336,534 | Surface water purchased | 2 | Below the study levels |
| INDIAN HILLS GID | NV0000355 | 5,962 | Ground water | 5 | Below the study levels |
| KINGSBURY GID | NV0000004 | 3,839 | Surface water | 1 | Below the study levels |
| LANDER CO SEWER AND WATER DIST 1 BM | NV0000008 | 3,635 | Ground water | 4 | Below the study levels |
| LAS VEGAS VALLEY WATER DISTRICT | NV0000090 | 1,539,277 | Surface water purchased | 20 | Below the study levels |
| LOVELOCK MEADOWS WATER DISTRICT | NV0000161 | 3,562 | Ground water | 3 | Below the study levels |
| MOAPA VALLEY WATER DISTRICT | NV0000160 | 8,500 | Ground water | 3 | Below the study levels |
| MOUNTAIN FALLS WATER SYSTEM GBWC | NV0000920 | 4,345 | Ground water | 2 | Below the study levels |
| NELLIS AIR FORCE BASE | NV0003028 | 19,081 | Surface water purchased | 3 | Below the study levels |
| NORTH LAS VEGAS UTILITIES | NV0000175 | 376,515 | Surface water purchased | 4 | Below the study levels |
| SAND CREEK | NV0000406 | 953 | Ground water | 1 | Below the study levels |
| SUN VALLEY GID | NV0000211 | 17,000 | Surface water purchased | 1 | Below the study levels |
| TOWN OF MINDEN | NV0000168 | 3,500 | Ground water | 9 | Below the study levels |
| TRUCKEE MEADOWS WATER AUTHORITY | NV0000190 | 442,000 | Surface water | 68 | Reached a study level |
| VIRGIN VALLEY WATER DISTRICT | NV0000167 | 26,000 | Ground water | 7 | Below the study levels |
| WEST WENDOVER WATER SYSTEM | NV0000246 | 4,535 | Ground water | 1 | Below the study levels |
| WINNEMUCCA CITY OF | NV0000248 | 8,518 | Ground water | 6 | Below the study levels |
| YERINGTON CITY OF | NV0000255 | 5,050 | Ground water | 2 | Below the study levels |
What is included
Each active community water system with complete monitoring is counted once, even if it is linked with several ZIP codes. Private wells are excluded, and UCMR 5 did not comprehensively monitor every small system. This page does not apply Nevada's state-specific standards or determine compliance. Use the official state or territory drinking-water program for current regulatory information.