Community Water System · PWS 090605129
Oasis Mobile Home Park
Operator location Thermal, EPA Region 9 — Tribal Water Systems - upper-third violation load (> 74 violations) with 564 EPA violations; groundwater source; 1,350 served (PWS-level, not municipal population).
- 1,350
- People served (this PWS)
- 564
- EPA violations (this PWS)
- 59
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Oasis Mobile Home Park standing, high SDWIS violation third
564 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 10% is middle-third health share (≤ 23%). Population rank #16,841 of 29,740 among systems serving 500+.
The verdict
Oasis Mobile Home Park sits in the upper third of the sitemap cohort by violation count (564), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,350 (mid served population (≤ 3,309)). Health-based share is 10% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #16,841 of 29,740
- Population · /systems
- #76 of 129
- Population · 09
- 564
- Total EPA violations on record
- 10%
- 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
- Private
- Connections
- 352
- School/Daycare
- No
- MCL Violations
- 56
- Monitoring Violations
- 292
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 51 | 2022 |
| Public Notice | Other | 33 | 2022 |
| Coliform (TCR) | MR | 32 | 2015 |
| Revised Total Coliform Rule | MON | 17 | 2020 |
| Nitrate | MR | 11 | 2022 |
| Gross Alpha, Excl. Radon and U | MR | 6 | 2021 |
| Revised Total Coliform Rule | RPT | 6 | 2024 |
| Arsenic | MR | 5 | 2019 |
| Diquat | MR | 5 | 2021 |
| 2,3,7,8-TCDD | MR | 5 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2022 |
| Consumer Confidence Rule | Other | 5 | 2009 |
| Coliform (TCR) | MCL | 5 | 2007 |
| Dalapon | MR | 4 | 2021 |
| Endothall | MR | 4 | 2021 |
| OXAMYL | MR | 4 | 2021 |
| Picloram | MR | 4 | 2021 |
| Dinoseb | MR | 4 | 2021 |
| Carbofuran | MR | 4 | 2021 |
| 2,4-D | MR | 4 | 2021 |
| 2,4,5-TP | MR | 4 | 2021 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2022 |
| Pentachlorophenol | MR | 4 | 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 4 | 2021 |
| ETHYLENE DIBROMIDE | MR | 4 | 2021 |
| Xylenes, Total | MR | 4 | 2022 |
| DICHLOROMETHANE | MR | 4 | 2022 |
| o-Dichlorobenzene | MR | 4 | 2022 |
| p-Dichlorobenzene | MR | 4 | 2022 |
| Vinyl chloride | MR | 4 | 2022 |
Violation Count vs. the National Corpus
Oasis Mobile Home Park has 564 recorded EPA violations, 96% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 4% carry more. 10% of this system's own violations are health-based (59 of 564), and it ranks #16,841 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)
564 Higher than most more violations than 96% 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 Oasis Mobile Home Park
564 violations on record for 090605129; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS
Nationwide peers
564 violations · 1,350 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 Oasis Mobile Home Park
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.