Community Water System · PWS 090600151
Soboba
Operator location San Jacinto, EPA Region 9 — Tribal Water Systems - upper-third violation load (> 74 violations) with 144 EPA violations; groundwater source; 3,000 served (PWS-level, not municipal population).
- 3,000
- People served (this PWS)
- 144
- EPA violations (this PWS)
- 8
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Soboba standing, high SDWIS violation third
144 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 6% is middle-third health share (≤ 23%). Population rank #10,587 of 29,740 among systems serving 500+.
The verdict
Soboba sits in the upper third of the sitemap cohort by violation count (144), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 3,000 (mid served population (≤ 3,309)). Health-based share is 6% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #10,587 of 29,740
- Population · /systems
- #46 of 129
- Population · 09
- 144
- Total EPA violations on record
- 6%
- 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
- 250
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 71
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 10 | 2011 |
| Coliform (TCR) | MCL | 8 | 2003 |
| DICHLOROMETHANE | MR | 3 | 2019 |
| Nitrate | MR | 2 | 2002 |
| 2,4,5-TP | MR | 2 | 1998 |
| Pentachlorophenol | MR | 2 | 1998 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 2 | 1998 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2019 |
| TTHM | MR | 2 | 2019 |
| Consumer Confidence Rule | Other | 2 | 2010 |
| ETHYLENE DIBROMIDE | MR | 2 | 1998 |
| Carbofuran | MR | 2 | 1998 |
| OXAMYL | MR | 1 | 1998 |
| Dalapon | MR | 1 | 1998 |
| Dinoseb | MR | 1 | 1998 |
| Atrazine | MR | 1 | 1998 |
| 2,3,7,8-TCDD | MR | 1 | 1998 |
| Benzo(a)pyrene | MR | 1 | 1998 |
| 1,2,4-Trichlorobenzene | MR | 1 | 1998 |
| cis-1,2-Dichloroethylene | MR | 1 | 1998 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 1998 |
| Vinyl chloride | MR | 1 | 1998 |
| p-Dichlorobenzene | MR | 1 | 1998 |
| 1,1-Dichloroethylene | MR | 1 | 1998 |
| Carbon tetrachloride | MR | 1 | 1998 |
| 1,1,1-Trichloroethane | MR | 1 | 1998 |
| 1,2-Dichloropropane | MR | 1 | 1998 |
| 1,1,2-Trichloroethane | MR | 1 | 1998 |
| Tetrachloroethylene | MR | 1 | 1998 |
| Benzene | MR | 1 | 1998 |
Violation Count vs. the National Corpus
Soboba has 144 recorded EPA violations, 80% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 20% carry more. 6% of this system's own violations are health-based (8 of 144), and it ranks #10,587 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)
144 Higher than most more violations than 80% 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
SDWIS compliance record for Soboba
144 violations on record for 090600151; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS
Nationwide peers
144 violations · 3,000 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Soboba
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.