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RIMROCK WEST IMPRVMNT DIST

PWS ID: OR4101334 · REDMOND, Oregon 97756

RIMROCK WEST IMPRVMNT DIST serves 150 people in REDMOND, Oregon using Groundwater water sources. It has 292 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: RIMROCK WEST IMPRVMNT DIST

RIMROCK WEST IMPRVMNT DIST is a local-owned community water system that delivers drinking water to 150 residents in REDMOND, Oregon (Deschutes County) through 54 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 292 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 289 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 16 violations (MR). 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. RIMROCK WEST IMPRVMNT DIST's 292 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
150
Total Violations
292
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
54
County
Deschutes
School/Daycare
No
MCL Violations
0
Monitoring Violations
289
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 16 2005
Lead and Copper Rule MR 10 2020
Nitrate MR 8 2003
Endothall MR 6 2002
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2002
Endrin MR 4 2002
ETHYLENE DIBROMIDE MR 4 2002
Glyphosate MR 4 2002
Heptachlor epoxide MR 4 2002
HEXACHLOROBENZENE MR 4 2002
Hexachlorocyclopentadiene MR 4 2002
Methoxychlor MR 4 2002
Picloram MR 4 2002
Simazine MR 4 2002
Total Polychlorinated Biphenyls (PCB) MR 4 2002
Toxaphene MR 4 2002
OXAMYL MR 4 2002
1,1-Dichloroethylene MR 4 2002
1,1,1-Trichloroethane MR 4 2002
1,2-Dichloropropane MR 4 2002
1,2,4-Trichlorobenzene MR 4 2002
Benzene MR 4 2002
DICHLOROMETHANE MR 4 2002
Ethylbenzene MR 4 2002
Vinyl chloride MR 4 2002
Arsenic MR 4 2002
Cadmium MR 4 2002
Chromium MR 4 2002
Mercury MR 4 2002
CYANIDE MR 4 2002

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 RIMROCK WEST IMPRVMNT DIST.

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 OR4101334 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
2020 Lead and Copper Rule MR 10 SDWIS / OR4101334 / 5000
2018 E. COLI MR 1 SDWIS / OR4101334 / 3014
2005 Coliform (TCR) MR 16 SDWIS / OR4101334 / 3100
2003 Nitrate MR 8 SDWIS / OR4101334 / 1040
2003 Consumer Confidence Rule Other 1 SDWIS / OR4101334 / 7000
2002 Endothall MR 6 SDWIS / OR4101334 / 2033
2002 1,2-DIBROMO-3-CHLOROPROPANE MR 4 SDWIS / OR4101334 / 2931
2002 Endrin MR 4 SDWIS / OR4101334 / 2005
2002 ETHYLENE DIBROMIDE MR 4 SDWIS / OR4101334 / 2946
2002 Glyphosate MR 4 SDWIS / OR4101334 / 2034
2002 Heptachlor epoxide MR 4 SDWIS / OR4101334 / 2067
2002 HEXACHLOROBENZENE MR 4 SDWIS / OR4101334 / 2274
2002 Hexachlorocyclopentadiene MR 4 SDWIS / OR4101334 / 2042
2002 Methoxychlor MR 4 SDWIS / OR4101334 / 2015
2002 Picloram MR 4 SDWIS / OR4101334 / 2040

How RIMROCK WEST IMPRVMNT DIST Compares

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

Metric RIMROCK WEST IMPRVMNT DIST Oregon avg Federal benchmark
Total violations 292 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 150 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 RIMROCK WEST IMPRVMNT DIST water safe to drink? ▼
RIMROCK WEST IMPRVMNT DIST (PWS ID: OR4101334) has 292 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 150 people using Groundwater sources.
How many people does RIMROCK WEST IMPRVMNT DIST serve? ▼
RIMROCK WEST IMPRVMNT DIST serves 150 people in REDMOND, Oregon. It is a Local-owned system using Groundwater water sources with 54 service connections.
What type of violations does RIMROCK WEST IMPRVMNT DIST have? ▼
RIMROCK WEST IMPRVMNT DIST has 292 total violations: 0 health-based violations (MCL exceedances or treatment failures), 289 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in RIMROCK WEST IMPRVMNT DIST water? ▼
No PFAS testing data is available for RIMROCK WEST IMPRVMNT DIST under the EPA's UCMR5 monitoring program.
What water source does RIMROCK WEST IMPRVMNT DIST use? ▼
RIMROCK WEST IMPRVMNT DIST uses Groundwater 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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