Community Water System · PWS OR4100714
Umpqua Ranch Coop
Operator location Idleyld, Oregon - smaller served population (≤ 999) at 161 people served; 253 SDWIS violations on record from surface water sources.
- 161
- People served (this PWS)
- 253
- EPA violations (this PWS)
- 51
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Umpqua Ranch Coop standing, high SDWIS violation third
161 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 20% is middle-third health share (≤ 23%).
The verdict
Umpqua Ranch Coop sits in the upper third of the sitemap cohort by violation count (253), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (161; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 20% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 253
- Total EPA violations on record
- 20%
- Health-based (MCL / treatment failure)
- 161
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
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
- 92
- County
- Douglas
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 176
- Treatment Tech Violations
- 44
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 44 | 2022 |
| Coliform (TCR) | MR | 42 | 2012 |
| Surface Water Treatment Rule | MR | 26 | 2022 |
| COLIPHAGE | MR | 19 | 2017 |
| Public Notice | Other | 11 | 2023 |
| Nitrate | MR | 9 | 2019 |
| Consumer Confidence Rule | Other | 7 | 2004 |
| Coliform (TCR) | MCL | 7 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2019 |
| TTHM | MR | 5 | 2019 |
| Arsenic | MR | 2 | 1999 |
| Antimony, Total | MR | 2 | 1999 |
| Beryllium, Total | MR | 2 | 1999 |
| CYANIDE | MR | 2 | 1999 |
| Thallium, Total | MR | 2 | 1999 |
| Lead and Copper Rule | MR | 2 | 2018 |
| E. COLI | MR | 2 | 2019 |
| Nickel | MR | 2 | 1999 |
| Interim Enhanced Surface Water Treatment Rule | MR | 1 | 2005 |
| Revised Total Coliform Rule | MON | 1 | 2017 |
| Endrin | MR | 1 | 2017 |
| BHC-GAMMA | MR | 1 | 2017 |
| Toxaphene | MR | 1 | 2017 |
| Dalapon | MR | 1 | 2017 |
| Endothall | MR | 1 | 2017 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2017 |
| Hexachlorocyclopentadiene | MR | 1 | 2017 |
| Carbofuran | MR | 1 | 2017 |
| Atrazine | MR | 1 | 2017 |
| LASSO | MR | 1 | 2017 |
Violation Count vs. the National Corpus
Umpqua Ranch Coop has 253 recorded EPA violations, 88% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 12% carry more. 20% of this system's own violations are health-based (51 of 253), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
253 Higher than most more violations than 88% 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 Umpqua Ranch Coop
EPA SDWIS lists 161 people served and 92 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
253 violations · 161 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.
What to do with Umpqua Ranch Coop
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.