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LOST RIVER HIGH SCHOOL

PWS ID: OR4190552 · KLAMATH FALLS, Oregon 97601

LOST RIVER HIGH SCHOOL serves 320 people in KLAMATH FALLS, Oregon using Groundwater water sources. It has 157 recorded EPA violations, including 6 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LOST RIVER HIGH SCHOOL

LOST RIVER HIGH SCHOOL is a local-owned non-transient non-community water system that delivers drinking water to 320 residents in KLAMATH FALLS, Oregon (Klamath County) through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 157 total violations for this system , of which 6 (4%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 148 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 Toluene, recorded in 14 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. LOST RIVER HIGH SCHOOL's 157 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
320
Total Violations
157
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
5
County
Klamath
School/Daycare
Yes
MCL Violations
6
Monitoring Violations
148
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Toluene MR 14 2013
Lead and Copper Rule MR 6 2022
Coliform (TCR) MCL 6 2014
Coliform (TCR) MR 5 2001
E. COLI MR 3 2023
Nickel MR 2 2017
Nitrate MR 2 2020
TTHM MR 2 2010
Ethylbenzene MR 2 2011
Benzene MR 2 2011
CHLOROBENZENE MR 2 2011
Tetrachloroethylene MR 2 2011
1,2-Dichloropropane MR 2 2011
1,1,1-Trichloroethane MR 2 2011
1,2-Dichloroethane MR 2 2011
trans-1,2-Dichloroethylene MR 2 2011
1,1-Dichloroethylene MR 2 2011
Vinyl chloride MR 2 2011
o-Dichlorobenzene MR 2 2011
Endrin MR 2 2011
Methoxychlor MR 2 2011
Diquat MR 2 2011
Di(2-ethylhexyl) adipate MR 2 2011
Simazine MR 2 2011
Picloram MR 2 2011
Dinoseb MR 2 2011
Hexachlorocyclopentadiene MR 2 2011
LASSO MR 2 2011
Heptachlor epoxide MR 2 2011
2,4-D MR 2 2011

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 LOST RIVER HIGH SCHOOL.

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 OR4190552 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 E. COLI MR 3 SDWIS / OR4190552 / 3014
2023 Revised Total Coliform Rule MON 2 SDWIS / OR4190552 / 8000
2022 Lead and Copper Rule MR 6 SDWIS / OR4190552 / 5000
2020 Nitrate MR 2 SDWIS / OR4190552 / 1040
2017 Nickel MR 2 SDWIS / OR4190552 / 1036
2014 Coliform (TCR) MCL 6 SDWIS / OR4190552 / 3100
2013 Toluene MR 14 SDWIS / OR4190552 / 2991
2011 Ethylbenzene MR 2 SDWIS / OR4190552 / 2992
2011 Benzene MR 2 SDWIS / OR4190552 / 2990
2011 CHLOROBENZENE MR 2 SDWIS / OR4190552 / 2989
2011 Tetrachloroethylene MR 2 SDWIS / OR4190552 / 2987
2011 1,2-Dichloropropane MR 2 SDWIS / OR4190552 / 2983
2011 1,1,1-Trichloroethane MR 2 SDWIS / OR4190552 / 2981
2011 1,2-Dichloroethane MR 2 SDWIS / OR4190552 / 2980
2011 trans-1,2-Dichloroethylene MR 2 SDWIS / OR4190552 / 2979

How LOST RIVER HIGH SCHOOL Compares

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

Metric LOST RIVER HIGH SCHOOL Oregon avg Federal benchmark
Total violations 157 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 6 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 320 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 LOST RIVER HIGH SCHOOL water safe to drink? ▼
LOST RIVER HIGH SCHOOL (PWS ID: OR4190552) has 157 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 320 people using Groundwater sources.
How many people does LOST RIVER HIGH SCHOOL serve? ▼
LOST RIVER HIGH SCHOOL serves 320 people in KLAMATH FALLS, Oregon. It is a Local-owned system using Groundwater water sources with 5 service connections.
What type of violations does LOST RIVER HIGH SCHOOL have? ▼
LOST RIVER HIGH SCHOOL has 157 total violations: 6 health-based violations (MCL exceedances or treatment failures), 148 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LOST RIVER HIGH SCHOOL water? ▼
No PFAS testing data is available for LOST RIVER HIGH SCHOOL under the EPA's UCMR5 monitoring program.
What water source does LOST RIVER HIGH SCHOOL use? ▼
LOST RIVER HIGH SCHOOL uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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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