Klamath, 09

Yurok - McCoy - Kenek Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace EPA Region 9’s official records. Always confirm current status with EPA Region 9 before making decisions based on this information.

System facts

System ID (PWSID): 090600161
System type: Community Water System
Population served: 30
Service connections: 8
Ownership: Native American tribal
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2025 – December 31, 2025
Archived
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2025 – October 31, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2025 – September 30, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2025 – August 31, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2025 – July 31, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2025 – March 31, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2025 – February 28, 2025
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
February 1, 2025 – February 28, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2025 – January 31, 2025
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2025 – January 31, 2025
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2024 – December 31, 2024
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
November 1, 2024 – November 30, 2024
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2024 – November 30, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2024 – October 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 2024 – September 30, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2024 – August 31, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – December 12, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2024 – June 30, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2024 – May 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2024 – March 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2024 – February 29, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2024 – January 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2023 – December 31, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2023 – September 30, 2023
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2023 – August 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2023 – September 30, 2023
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
March 1, 2023 – March 31, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2023 – February 28, 2023
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 19, 2023 – February 10, 2023
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2023 – January 31, 2023
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2023 – January 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2023 – March 10, 2023
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
January 1, 2021 – January 31, 2021
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Styrene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Benzene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Toluene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2019 – September 30, 2019
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
March 1, 2019 – March 31, 2019
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 2019 – February 28, 2019
Resolved
Monitoring, Regular
—
Barium
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Benzene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Toluene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Styrene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2019 – March 31, 2019
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Selenium
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Mercury
January 1, 2019 – December 31, 2019
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
January 1, 2019 – January 31, 2019
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Chromium
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2019 – December 31, 2019
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
December 1, 2018 – December 31, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2018 – November 30, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2018 – October 31, 2018
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 19, 2018 – June 25, 2019
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
June 30, 2018 – August 8, 2019
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
June 1, 2018 – March 15, 2019
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2018 – June 30, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2018 – May 31, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2018 – April 30, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2018 – March 31, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 2018 – February 28, 2018
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2018 – December 31, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2018 – January 31, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2017 – December 31, 2017
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
November 1, 2017 – November 30, 2017
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2017 – October 31, 2017
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2017 – June 30, 2017
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2017 – May 31, 2017
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2017 – April 30, 2017
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2017 – March 31, 2017
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2017 – December 1, 2017
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2017 – March 31, 2017
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Nitrite
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2016 – September 30, 2016
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2016 – August 31, 2016
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2016 – July 31, 2016
Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2025 – December 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
October 1, 2025 – October 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
September 1, 2025 – September 30, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
August 1, 2025 – August 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2025 – July 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2025 – April 30, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2025 – March 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 2025 – February 28, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 2025 – February 28, 2025	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2025 – January 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2025 – January 31, 2025	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
December 1, 2024 – December 31, 2024	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
November 1, 2024 – November 30, 2024	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2024 – November 30, 2024	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2024 – October 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
September 1, 2024 – September 30, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
August 1, 2024 – August 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2024 – December 12, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2024 – June 30, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
May 1, 2024 – May 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2024 – March 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 2024 – February 29, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2024 – January 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
December 1, 2023 – December 31, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
September 1, 2023 – September 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2023 – August 31, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
March 1, 2023 – March 31, 2023	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
February 1, 2023 – February 28, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 19, 2023 – February 10, 2023	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2023 – January 31, 2023	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2023 – January 31, 2023	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2023 – March 10, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2021 – January 31, 2021	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Styrene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Benzene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Toluene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Trichloroethylene	—	Resolved
March 1, 2019 – March 31, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 2019 – February 28, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Barium	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Benzene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Toluene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Styrene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Selenium	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Mercury	—	Resolved
January 1, 2019 – January 31, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Chromium	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Cadmium	—	Resolved
December 1, 2018 – December 31, 2018	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
November 1, 2018 – November 30, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2018 – October 31, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 19, 2018 – June 25, 2019	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 30, 2018 – August 8, 2019	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
June 1, 2018 – March 15, 2019	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
June 1, 2018 – June 30, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
May 1, 2018 – May 31, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2018 – March 31, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 2018 – February 28, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2018 – January 31, 2018	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
December 1, 2017 – December 31, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
November 1, 2017 – November 30, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2017 – October 31, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
May 1, 2017 – May 31, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2017 – April 30, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring, Regular	Nitrite	—	Resolved
January 1, 2017 – December 1, 2017	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2017 – March 31, 2017	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring, Regular	Nitrite	—	Resolved
September 1, 2016 – September 30, 2016	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2016 – August 31, 2016	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2016 – July 31, 2016	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

January 28, 2026Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 9, 2025Federal Compliance achieved1 linked violation
December 2, 2025Federal Violation/Reminder Notice1 linked violation
November 18, 2025Federal Compliance achieved1 linked violation
November 14, 2025Federal Compliance achieved1 linked violation
September 16, 2025Federal Violation/Reminder Notice1 linked violation
September 16, 2025Federal Violation/Reminder Notice1 linked violation
August 20, 2025Federal Compliance achieved1 linked violation
July 30, 2025Federal Compliance achieved4 linked violations
June 23, 2025Federal Compliance achieved1 linked violation
June 23, 2025Federal Compliance achieved1 linked violation
June 11, 2025Federal Violation/Reminder Notice1 linked violation
June 11, 2025Federal Violation/Reminder Notice1 linked violation
May 12, 2025Federal Compliance achieved1 linked violation
March 5, 2025Federal Compliance achieved1 linked violation
January 31, 2025Federal Compliance achieved1 linked violation
December 12, 2024Federal Compliance achieved1 linked violation
December 10, 2024Federal Compliance achieved3 linked violations
September 19, 2024Federal Compliance achieved4 linked violations
April 12, 2024Federal Compliance achieved1 linked violation
April 5, 2024Federal Compliance achieved1 linked violation
October 11, 2023Federal Compliance achieved2 linked violations
October 6, 2023Federal Compliance achieved1 linked violation
April 10, 2023Federal Compliance achieved1 linked violation
March 10, 2023Federal Compliance achieved2 linked violations
February 10, 2023Federal Compliance achieved3 linked violations
March 1, 2021Federal Compliance achieved1 linked violation
April 21, 2020Federal Compliance achieved9 linked violations
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
December 30, 2019Federal Compliance achieved1 linked violation
August 8, 2019Federal Compliance achieved1 linked violation
August 8, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 25, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
June 6, 2019Federal Compliance achieved1 linked violation
March 15, 2019Federal Compliance achieved1 linked violation
December 1, 2017Federal Compliance achieved1 linked violation
May 31, 2017Federal Compliance achieved1 linked violation
May 31, 2017Federal Compliance achieved1 linked violation
May 31, 2017Federal Compliance achieved1 linked violation
May 31, 2017Federal Compliance achieved1 linked violation
November 19, 2016Federal Compliance achieved1 linked violation
November 19, 2016Federal Compliance achieved1 linked violation
November 19, 2016Federal Compliance achieved1 linked violation

Contact

Yurok Tribe

7074821350

Klamath, CA 95548