California
Sierra County drinking water quality
33 active public water systems serve 6,719 people in Sierra County. 27 are compliant, 6 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
8 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
City of Loyalton Loyalton |
983 | 0 | 0 | |
|
Sierra Csa #5, Sierra Brooks |
726 | 1 | 0 | |
|
Sierra Water Resources Sierra City |
324 | 0 | 0 | |
|
Downieville Public U.d. |
290 | 2 | 1 | |
|
Sierra City Water Works, Inc. Sierra City |
250 | 1 | 0 | |
|
Sierraville P.u.d. |
200 | 0 | 0 | |
|
Sierra Co. W.w.d #1 Calpine |
182 | 0 | 0 | |
|
Alleghany County W.d. |
82 | 0 | 0 |
Non-community systems (25: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tnf-Logger & Stampede RC |
1,200 | 0 | 0 | |
|
Tnf-Aspen Creek/pass Creek |
300 | 0 | 0 | |
|
Sardine Lake Resort |
250 | 0 | 0 | |
|
Bassett's Station |
200 | 0 | 0 | |
|
Tnf-Cal-Ida Well |
200 | 0 | 0 | |
|
Treasure Mountain Camp |
200 | 0 | 0 | |
|
Shaffer S High Sierra Camp |
149 | 0 | 0 | |
|
Greene Acres Prop. O.a. |
129 | 0 | 0 | |
|
Packer Lake Lodge |
125 | 1 | 0 | |
|
Tnf-Sardine Lake/salmon Creek |
100 | 0 | 0 | |
|
Tnf-Wild Plum CG |
100 | 0 | 0 | |
|
Tnf-Chapman CG |
95 | 0 | 0 | |
|
Tnf-Indian Valley/rocky Rest CG |
95 | 0 | 0 | |
|
Tnf-Cottonwood CG |
75 | 0 | 0 | |
|
Tnf-Little Truckee WS |
75 | 0 | 0 | |
|
Tnf-Loganville CG |
70 | 0 | 0 | |
|
The Yubaverse |
58 | 1 | 0 | |
|
New Age Church of Being-Sierra Hot Spr. |
50 | 0 | 0 | |
|
Tnf-Union Flat CG |
40 | 1 | 0 | |
|
Tnf-Yuba Pass CG |
40 | 0 | 0 | |
|
Camp Leonard, Sierra NV F.c. |
30 | 0 | 0 | |
|
Webber Lake Campground |
26 | 0 | 0 | |
|
Pilot Lake Camp |
25 | 0 | 0 | |
|
Salmon Lake Lodge |
25 | 0 | 0 | |
|
Sierra Pines Resort |
25 | 0 | 0 |
Inactive systems (32, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.