Transient Non-Community Water System · PWS OR4191009
Oprd Oswald West State Park
Operator location Nehalem, Oregon - upper-third violation load (> 74 violations) with 148 EPA violations; surface water source; 1,708 served (PWS-level, not municipal population).
- 1,708
- People served (this PWS)
- 148
- EPA violations (this PWS)
- 11
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Oprd Oswald West State Park standing, high SDWIS violation third
148 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 7% is middle-third health share (≤ 23%). Population rank #14,856 of 29,740 among systems serving 500+.
The verdict
Oprd Oswald West State Park sits in the upper third of the sitemap cohort by violation count (148), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,708 (mid served population (≤ 3,309)). Health-based share is 7% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #14,856 of 29,740
- Population · /systems
- #190 of 373
- Population · OR
- 148
- Total EPA violations on record
- 7%
- 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
- Transient Non-Community
- Owner Type
- State
- Connections
- 1
- County
- Tillamook
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 134
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 57 | 2010 |
| Surface Water Treatment Rule | MR | 50 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | MR | 10 | 2025 |
| Surface Water Treatment Rule | TT | 9 | 1995 |
| Nitrate | MR | 9 | 2010 |
| Revised Total Coliform Rule | MON | 8 | 2024 |
| Coliform (TCR) | MCL | 2 | 1992 |
Violation Count vs. the National Corpus
Oprd Oswald West State Park has 148 recorded EPA violations, 81% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 19% carry more. 7% of this system's own violations are health-based (11 of 148), and it ranks #14,856 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)
148 Higher than most more violations than 81% 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 Oprd Oswald West State Park
148 violations on record for OR4191009; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS
Nationwide peers
148 violations · 1,708 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 Oprd Oswald West State Park
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Oregon compares on the same EPA violation measures. Oregon 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.