PlainWater
Counties → California

Sierra County, California

Water Systems
33
Population Served
12,084
Total Violations
752
241 health-based
PFAS Detected
0
of 0 tested

Violation Analysis

93.9%
Systems with Violations
22.8
Avg Violations per System
32.0%
Health-Based Violations

Water Source Types

GW
31 systems (94%)
SW
2 systems (6%)

Compliance Snapshot

Sierra California water systems by violation status, EPA SDWIS records.

No violations on record (2) One or more violations (31)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Sardine Lake Resort 5,040 14 -
Tnf-Logger & Stampede Rc 1,200 42 -
City of Loyalton 983 7 -
Downieville Public U.d. 783 20 -
Sierra CSA #5, Sierra Brooks 726 13 -
Sierra Water Resources - Sierra City 324 105 -
Tnf-Aspen Creek/Pass Creek 300 28 -
Bassett's Station 300 5 -
Sierra City Water Works, Inc. 250 36 -
Treasure Mountain Camp 200 8 -
Sierraville P.U.D. 200 28 -
Tnf-Cal-Ida Well 200 21 -
Sierra Co. W.w.d #1 Calpine 182 117 -
Shaffer S High Sierra Camp 131 25 -
Greene Acres Prop. O.a. 129 33 -
Packer Lake Lodge 125 35 -
Tnf-Wild Plum Cg 100 26 -
Tnf-Sardine Lake/Salmon Creek 100 24 -
Tnf-Indian Valley/Rocky Rest Cg 95 3 -
Tnf-Chapman Cg 95 9 -
Alleghany County W.D. 82 20 -
Tnf-Cottonwood Cg 75 32 -
Tnf-Little Truckee WS 75 9 -
Tnf-Loganville Cg 70 4 -
The Yubaverse 58 25 -
New Age Church of Being-Sierra Hot Spr. 50 11 -
Tnf-Union Flat Cg 40 3 -
Tnf-Yuba Pass Cg 40 0 -
Camp Leonard, Sierra NV F.c. 30 1 -
Webber Lake Campground 26 0 -
Pilot Lake Camp 25 2 -
Salmon Lake Lodge 25 38 -
Sierra Pines Resort 25 8 -

Other Counties in California

Los Angeles County
276 systems · 10,109,089 served · 3,972 violations
San Diego County
197 systems · 3,744,323 served · 4,832 violations
Orange County
46 systems · 3,201,893 served · 507 violations
Riverside County
201 systems · 2,839,125 served · 6,103 violations
San Bernardino County
318 systems · 2,830,626 served · 4,611 violations
Alameda County
27 systems · 2,249,634 served · 275 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Sierra County? ▼
Sierra County has 752 total drinking water violations across 33 water systems, of which 241 are health-based violations. 93.9% of systems have at least one violation.
How many people get water from Sierra County systems? ▼
Water systems in Sierra County serve approximately 12,084 people through 33 public water systems.
Has PFAS been detected in Sierra County water? ▼
No PFAS testing data is available for water systems in Sierra County.
What types of water sources supply Sierra County? ▼
Water systems in Sierra County use GW (31 systems), SW (2 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 32.0% of Sierra County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.