Water quality for ZIP code 95945
ZIP 95945 covers Grass Valley and Rough and Ready in Nevada County, California, one of 8 ZIP codes in the county. 84 active public water systems serve the county; 21 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Nevada County
20 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Nevada City Nevada City |
3,148 | 0 | 5.1 mi | |
| Nevada ID E. George, Banner Mountain |
17,154 | 0 | 5.2 mi | |
| Nevada ID Loma Rica |
14,072 | 0 | 5.3 mi | |
| Washington Ridge C.c. |
70 | 1 | 7.9 mi | |
| Yulica |
25 | 0 | 8.4 mi | |
| Christian Encounter Ministries |
35 | 0 | 8.8 mi | |
| Rough & Ready Village |
154 | 1 | 9.2 mi | |
| Creekside Village |
300 | 0 | 11.0 mi | |
| Sierra Estates Mutual Water Company |
100 | 2 | 11.3 mi | |
| Nevada ID Lake of Pines |
6,870 | 0 | 11.9 mi | |
| Nevada ID Lake Wildwood |
9,108 | 0 | 12.4 mi | |
| Ananda Village |
226 | 0 | 12.5 mi | |
| Gold Country Home Park Water System |
60 | 0 | 13.7 mi | |
| Shady Lake Water Association |
90 | 0 | 14.0 mi | |
| Washington Water District |
330 | 3 | 15.4 mi | |
| Plavada Community Association |
126 | 0 | 29.6 mi | |
| Donner Summit Public Utility District |
98 | 0 | 34.2 mi | |
| Truckee-Donner Pud, Main |
36,730 | 0 | 42.5 mi | |
| Truckee-Donner Pud Hirschdale |
85 | 0 | 49.3 mi | |
| Floriston Water System |
110 | 3 | 52.6 mi |
Non-community systems in Nevada County (63: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Nevada County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.