Public water system · CA4610001
ActiveCity of Loyalton
At a glance
City of Loyalton (PWSID CA4610001) is an active community water system in Sierra County, California. It reports serving 983 people through 343 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in February 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
983
Service connections
343
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Loyalton compare with other water systems in Sierra County?
By EPA's size categories, City of Loyalton is a small system (501 to 3,300 people). Sierra County has 32 active public water systems, and City of Loyalton is the 2nd-largest of them by population served. Its population served is about 4.4 times the county average of 224 people per system, and accounts for 14% of the 7,169 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Loyalton is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates City of Loyalton?
EPA lists City of Loyalton as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 32 active systems in Sierra County (19%) are also owned by a local government.
Does City of Loyalton have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in February 2022. The violations listed here began between July 1993 and February 2022. By type: 2 monitoring and 2 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 4 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2022-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 4 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
City of Loyalton: frequently asked questions
Who runs City of Loyalton?
City of Loyalton (PWSID CA4610001) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does City of Loyalton serve?
City of Loyalton reports serving 983 people through 343 service connections in Sierra County, California.
Where does City of Loyalton get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Loyalton have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in February 2022. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is City of Loyalton's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 4 violations for this system; none is health-based, and the most recent began in February 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find City of Loyalton's water quality report?
As a community water system, City of Loyalton must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Sierra County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Tnf-Logger & Stampede Rc | Sierra | 1,200 | Transient non-community | Groundwater |
| Downieville Public U.D. | Sierra | 783 | Community | Surface water |
| Sierra Csa #5, Sierra Brooks | Sierra | 726 | Community | Groundwater |
| Sierra Water Resources - Sierra City | Sierra | 324 | Community | Groundwater |
| Tnf-Aspen Creek/Pass Creek | Sierra | 300 | Transient non-community | Groundwater |
| Bassett'S Station | Sierra | 300 | Transient non-community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “City of Loyalton, PWSID CA4610001, California”, https://aquacensus.com/water-systems/california/city-of-loyalton-ca4610001 (data as of October 1, 2026).