Tap Truth EPA drinking water records, in plain English

County drinking water records

Nevada County, CA drinking water systems

21 community water systems serve Nevada County, CA, reporting 94,410 people served in all. A system that also serves other counties counts all of its customers here.

7 of them (33%) had at least one health-based violation in the last 10 years. 3 systems still have one unresolved.

12 rely mainly on groundwater and 9 on surface water, counting water bought from other systems.

20 systems filed a lead service line inventory listing 0 lead lines, 154 galvanized lines that must be replaced and 13,850 lines of unknown material.

Community water systems
21
People served, sum of each system's own figure
94,410
Systems with a health-based violation, last 10 years
7
Systems with one unresolved
3
Lead service lines in inventories
0

Water systems serving Nevada County

21 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Truckee-Donner PUD, Main Truckee 36,730 Groundwater 0 0 0
Nevada Id - E. George, Banner Mountain Grass Valley, Rough and Ready and 1 more and land outside them 17,154 Surface water 0 0 0
Nevada Id - Loma Rica Alta Sierra 14,072 Surface water 0 0 0
Nevada Id - Lake Wildwood Lake Wildwood and Penn Valley 9,108 Surface water 0 0 0
Nevada Id - Lake of Pines Lake of the Pines 6,870 Surface water 0 0 0
City of Grass Valley Grass Valley 4,947 Surface water 0 0 0
City of Nevada City Nevada City 3,148 Surface water 1 0 0
Plavada Community Association Kingvale 384 Groundwater 0 0 0
Washington Water District Washington and land outside it 330 Surface water 2 2 0
Donner Summit Public Utility District Soda Springs and land outside it 310 Surface water 1 0 0
Creekside Village Penn Valley 300 Groundwater 0 0 0
Rough & Ready Village Rough and Ready 268 Groundwater 0 0 0
Ananda Village Outside cities and towns 222 Groundwater 1 0 0
Floriston Water System Floriston 110 Groundwater under direct influence 1 0 0
Sierra Estates Mutual Water Company Outside cities and towns 100 Groundwater 1 2 No inventory
Shady Lake Water Association North San Juan 90 Groundwater 0 0 0
Truckee-Donner PUD - Hirschdale Outside cities and towns 85 Groundwater 0 0 0
Washington Ridge C.C. Outside cities and towns 62 Groundwater 0 1 0
Gold Country Home Park - Water System North San Juan 60 Groundwater 0 0 0
Christian Encounter Ministries Outside cities and towns 35 Groundwater 0 0 0
Yulica Outside cities and towns 25 Groundwater 1 0 0

Cities and towns in Nevada County

13 places

Back to California

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations