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UMPQUA RANCH COOP

PWS ID: OR4100714 · IDLEYLD, Oregon 97447

UMPQUA RANCH COOP serves 161 people in IDLEYLD, Oregon using Surface Water water sources. It has 253 recorded EPA violations, including 51 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: UMPQUA RANCH COOP

UMPQUA RANCH COOP is a private-owned community water system that delivers drinking water to 161 residents in IDLEYLD, Oregon (Douglas County) through 92 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 253 total violations for this system , of which 51 (20%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 176 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 44 violations (TT, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Oregon, EPA tracks 2,518 public water systems serving 4,005,242 people, with 206,659 cumulative violations and 20,339 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 82.1 violations. UMPQUA RANCH COOP's 253 violations sit above the Oregon average. Statewide, 30 of 125 UCMR5-tested systems have reported PFAS detections (24%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
161
Total Violations
253
Health-Based Violations
51
Water Source
Surface Water

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

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for UMPQUA RANCH COOP.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID OR4100714 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oregon Drinking Water Authority

Oregon's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OR regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Public Notice Other 11 SDWIS / OR4100714 / 7500
2022 Surface Water Treatment Rule TT 44 SDWIS / OR4100714 / 0200
2022 Surface Water Treatment Rule MR 26 SDWIS / OR4100714 / 0200
2019 Nitrate MR 9 SDWIS / OR4100714 / 1040
2019 Total Haloacetic Acids (HAA5) MR 5 SDWIS / OR4100714 / 2456
2019 TTHM MR 5 SDWIS / OR4100714 / 2950
2019 E. COLI MR 2 SDWIS / OR4100714 / 3014
2019 cis-1,2-Dichloroethylene MR 1 SDWIS / OR4100714 / 2380
2019 DICHLOROMETHANE MR 1 SDWIS / OR4100714 / 2964
2019 o-Dichlorobenzene MR 1 SDWIS / OR4100714 / 2968
2019 Vinyl chloride MR 1 SDWIS / OR4100714 / 2976
2019 1,2-Dichloroethane MR 1 SDWIS / OR4100714 / 2980
2019 1,1,2-Trichloroethane MR 1 SDWIS / OR4100714 / 2985
2019 CHLOROBENZENE MR 1 SDWIS / OR4100714 / 2989
2019 Benzene MR 1 SDWIS / OR4100714 / 2990

How UMPQUA RANCH COOP Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric UMPQUA RANCH COOP Oregon avg Federal benchmark
Total violations 253 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 51 8.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 24% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 161 1,591 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,518 regulated public water systems in Oregon.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is UMPQUA RANCH COOP water safe to drink? ▼
UMPQUA RANCH COOP (PWS ID: OR4100714) has 253 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 161 people using Surface Water sources.
How many people does UMPQUA RANCH COOP serve? ▼
UMPQUA RANCH COOP serves 161 people in IDLEYLD, Oregon. It is a Private-owned system using Surface Water water sources with 92 service connections.
What type of violations does UMPQUA RANCH COOP have? ▼
UMPQUA RANCH COOP has 253 total violations: 51 health-based violations (MCL exceedances or treatment failures), 176 monitoring/reporting violations, and 44 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in UMPQUA RANCH COOP water? ▼
No PFAS testing data is available for UMPQUA RANCH COOP under the EPA's UCMR5 monitoring program.
What water source does UMPQUA RANCH COOP use? ▼
UMPQUA RANCH COOP uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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