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States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 093200171

Yerington (Campbell Ranch)

Yerington, EPA Region 9 — Tribal Water Systems 89447 - drinking water served from groundwater sources to 512 people, tracked in EPA SDWIS and UCMR5.

512
People served
288
EPA violations
54
Health-based
Untested
UCMR5 result

The verdict

EPA records 288 drinking-water violations at Yerington (Campbell Ranch), 19% of them health-based.

288
Total EPA violations on record
19%
Health-based (MCL / treatment failure)
512
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Yerington (Campbell Ranch)

Yerington (Campbell Ranch) is a native american-owned community water system that delivers drinking water to 512 residents in Yerington, EPA Region 9 — Tribal Water Systems through 104 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 288 total violations for this system , of which 54 (19%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 169 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Arsenic, recorded in 44 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 9 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
512
Total Violations
288
Health-Based Violations
54
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
104
School/Daycare
No
MCL Violations
46
Monitoring Violations
169
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 44 2025
Coliform (TCR) MR 30 2009
Arsenic MR 21 2023
Public Notice Other 19 2024
Nitrate MR 9 2022
Chlorine MR 7 2023
Revised Total Coliform Rule MON 7 2023
Groundwater Rule TT 7 2023
Consumer Confidence Rule Other 6 2010
Combined Uranium MR 5 2023
2,3,7,8-TCDD MR 3 2020
Lead and Copper Rule MR 3 2008
Mercury MR 2 2014
Asbestos MR 2 2011
Endrin MR 2 2017
cis-1,2-Dichloroethylene MR 2 2017
Xylenes, Total MR 2 2017
o-Dichlorobenzene MR 2 2017
p-Dichlorobenzene MR 2 2017
Vinyl chloride MR 2 2017
trans-1,2-Dichloroethylene MR 2 2017
1,2-Dichloroethane MR 2 2017
1,1,1-Trichloroethane MR 2 2017
Carbon tetrachloride MR 2 2017
1,2-Dichloropropane MR 2 2017
Tetrachloroethylene MR 2 2017
Trichloroethylene MR 2 2017
CHLOROBENZENE MR 2 2017
Toluene MR 2 2017
Ethylbenzene MR 2 2017

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Yerington (Campbell Ranch).

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID 093200171 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 9 — Tribal Water Systems Drinking Water Authority

EPA Region 9 — Tribal Water Systems's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 09 regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Arsenic MCL 44 SDWIS / 093200171 / 1005
2024 Public Notice Other 19 SDWIS / 093200171 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / 093200171 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / 093200171 / 5200
2023 Arsenic MR 21 SDWIS / 093200171 / 1005
2023 Chlorine MR 7 SDWIS / 093200171 / 0999
2023 Revised Total Coliform Rule MON 7 SDWIS / 093200171 / 8000
2023 Groundwater Rule TT 7 SDWIS / 093200171 / 0700
2023 Combined Uranium MR 5 SDWIS / 093200171 / 4006
2022 Nitrate MR 9 SDWIS / 093200171 / 1040
2020 2,3,7,8-TCDD MR 3 SDWIS / 093200171 / 2063
2020 Total Haloacetic Acids (HAA5) MR 2 SDWIS / 093200171 / 2456
2020 TTHM MR 2 SDWIS / 093200171 / 2950
2017 Endrin MR 2 SDWIS / 093200171 / 2005
2017 cis-1,2-Dichloroethylene MR 2 SDWIS / 093200171 / 2380

How Yerington (Campbell Ranch) Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Yerington (Campbell Ranch) EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 288 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 54 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 512 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 9 — Tribal Water Systems.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Yerington (Campbell Ranch) water safe to drink? ▼
Yerington (Campbell Ranch) (PWS ID: 093200171) has 288 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 512 people using Groundwater sources.
How many people does Yerington (Campbell Ranch) serve? ▼
Yerington (Campbell Ranch) serves 512 people in Yerington, EPA Region 9 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 104 service connections.
What type of violations does Yerington (Campbell Ranch) have? ▼
Yerington (Campbell Ranch) has 288 total violations: 54 health-based violations (MCL exceedances or treatment failures), 169 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Yerington (Campbell Ranch) water? ▼
No PFAS testing data is available for Yerington (Campbell Ranch) under the EPA's UCMR5 monitoring program.
What water source does Yerington (Campbell Ranch) use? ▼
Yerington (Campbell Ranch) uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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 system's figures are rendered directly from 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.