Community Water System · PWS 093200171
Yerington (Campbell Ranch)
Operator location Yerington, EPA Region 9 — Tribal Water Systems - smaller served population (≤ 999) at 512 people served; 288 SDWIS violations on record from groundwater sources.
- 512
- People served (this PWS)
- 288
- EPA violations (this PWS)
- 54
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Yerington (Campbell Ranch) standing, high SDWIS violation third
512 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 19% is middle-third health share (≤ 23%). Population rank #28,309 of 29,740 among systems serving 500+.
The verdict
Yerington (Campbell Ranch) sits in the upper third of the sitemap cohort by violation count (288), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (512; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 19% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #28,309 of 29,740
- Population · /systems
- #128 of 129
- Population · 09
- 288
- Total EPA violations on record
- 19%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
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 |
Violation Count vs. the National Corpus
Yerington (Campbell Ranch) has 288 recorded EPA violations, 90% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 10% carry more. 19% of this system's own violations are health-based (54 of 288), and it ranks #28,309 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
288 Higher than most more violations than 90% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Population served record for Yerington (Campbell Ranch)
EPA SDWIS lists 512 people served and 104 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
288 violations · 512 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Yerington
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in EPA Region 9 — Tribal Water Systems compares on the same EPA violation measures. EPA Region 9 — Tribal Water Systems systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.