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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDOK1021417
PWS NameCOPAN PWA
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served733
County ServedWashington

Note

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

PWS Violation

Violations

Violation Category CodeViolation Type DescriptionRule NameContaminant NameViolation IDCompliance Status DescriptionCompliance Period Begin DateCompliance Period End DateIs Health Based Ind
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131435Known01-MAY-202631-MAY-2026No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131439Known01-APR-202630-JUN-2026Yes
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131427Open01-APR-2026 - No
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131426Open01-APR-2026 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131438Known01-APR-202630-JUN-2026Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131436Known01-APR-202630-JUN-2026Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131437Known01-APR-202630-JUN-2026Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine131422Known01-JAN-202631-JAN-2026No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131434Known01-JAN-202631-MAR-2026Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131431Known01-JAN-202631-MAR-2026Yes
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule131388Open01-JAN-2026 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131433Known01-JAN-202631-MAR-2026Yes
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule131423Known01-JAN-202631-JAN-2026No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131432Known01-JAN-202631-MAR-2026Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131417Known01-OCT-202531-DEC-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131418Known01-OCT-202531-DEC-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131419Known01-OCT-202531-DEC-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131420Known01-OCT-202531-DEC-2025Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131416Known01-AUG-202531-AUG-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131380Known01-JUL-202530-SEP-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131379Known01-JUL-202530-SEP-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131381Known01-JUL-202530-SEP-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131378Known01-JUL-202530-SEP-2025Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131415Known01-JUL-202531-JUL-2025Yes
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131364Returned to Compliance30-JUN-2025 - No
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131363Returned to Compliance30-JUN-2025 - No
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule131356Known01-MAY-202531-MAY-2025Yes
TTSingle Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131360Known01-MAY-202531-MAY-2025Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131357Known01-MAY-202531-MAY-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131365Known01-APR-202530-JUN-2025Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule131355Known01-APR-202530-APR-2025Yes
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131349Returned to Compliance01-APR-2025 - No
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131348Returned to Compliance01-APR-2025 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131367Known01-APR-202530-JUN-2025Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131358Known01-APR-202530-APR-2025Yes
TTSingle Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131361Known01-APR-202530-APR-2025Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule131354Known01-APR-202530-APR-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131366Known01-APR-202530-JUN-2025Yes
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice131372Open29-MAR-2025 - No
TTSingle Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131362Known01-MAR-202531-MAR-2025Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule131353Known01-MAR-202531-MAR-2025Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131359Known01-MAR-202531-MAR-2025Yes
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131344Returned to Compliance01-FEB-202528-FEB-2025No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule131343Returned to Compliance01-JAN-202531-JAN-2025No
MRMonitoring, RegularNitrate RuleNitrate-Nitrite131385Known01-JAN-202531-DEC-2025No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131347Known01-JAN-202531-MAR-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131346Known01-JAN-202531-MAR-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131345Known01-JAN-202531-MAR-2025Yes
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)131337Returned to Compliance30-DEC-2024 - No
MRFailure Submit IDSE/Subpart V Plan RptStage 2 Disinfectants and Disinfection Byproducts RuleTTHM131338Returned to Compliance30-DEC-2024 - No
  • 1 - 50 of 176

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
9006763131418SIFState Public Notification received29-JUN-2026State -
9006763131419SIFState Public Notification received29-JUN-2026State -
9006763131420SIFState Public Notification received29-JUN-2026State -
9006766131431SIFState Public Notification received29-JUN-2026State -
9006765131432SIFState Public Notification received29-JUN-2026State -
9006767131433SIFState Public Notification received29-JUN-2026State -
9006764131434SIFState Public Notification received29-JUN-2026State -
9006763131417SIFState Public Notification received29-JUN-2026State -
9006768131304SOXState Compliance achieved18-JUN-2026State -
9006753131427SIAState Violation/Reminder Notice02-JUN-2026State -
9006752131426SIAState Violation/Reminder Notice02-JUN-2026State -
9006730131351SOXState Compliance achieved06-APR-2026State -
9006729131350SOXState Compliance achieved06-APR-2026State -
9006751131422SIFState Public Notification received31-MAR-2026State -
9006751131423SIFState Public Notification received31-MAR-2026State -
9006738131303SIFState Public Notification received02-MAR-2026State -
9006743131305SIFState Public Notification received02-MAR-2026State -
9006740131307SIFState Public Notification received02-MAR-2026State -
9006741131308SIFState Public Notification received02-MAR-2026State -
9006744131309SIFState Public Notification received02-MAR-2026State -
9006739131310SIFState Public Notification received02-MAR-2026State -
9006745131313SIFState Public Notification received02-MAR-2026State -
9006746131315SIFState Public Notification received02-MAR-2026State -
9006747131316SIFState Public Notification received02-MAR-2026State -
9006734131321SIFState Public Notification received02-MAR-2026State -
9006734131322SIFState Public Notification received02-MAR-2026State -
9006748131325SIFState Public Notification received02-MAR-2026State -
9006749131327SIFState Public Notification received02-MAR-2026State -
9006749131328SIFState Public Notification received02-MAR-2026State -
9006749131330SIFState Public Notification received02-MAR-2026State -
9006749131331SIFState Public Notification received02-MAR-2026State -
9006749131332SIFState Public Notification received02-MAR-2026State -
9006736131339SIFState Public Notification received02-MAR-2026State -
9006750131343SIFState Public Notification received02-MAR-2026State -
9006731131353SIFState Public Notification received02-MAR-2026State -
9006731131354SIFState Public Notification received02-MAR-2026State -
9006731131355SIFState Public Notification received02-MAR-2026State -
9006731131356SIFState Public Notification received02-MAR-2026State -
9006731131357SIFState Public Notification received02-MAR-2026State -
9006731131358SIFState Public Notification received02-MAR-2026State -
9006731131359SIFState Public Notification received02-MAR-2026State -
9006731131360SIFState Public Notification received02-MAR-2026State -
9006731131361SIFState Public Notification received02-MAR-2026State -
9006731131362SIFState Public Notification received02-MAR-2026State -
9006733131385SIFState Public Notification received02-MAR-2026State -
9006733131388SIFState Public Notification received02-MAR-2026State -
9006733131390SIFState Public Notification received02-MAR-2026State -
9006733131391SIFState Public Notification received02-MAR-2026State -
9006733131392SIFState Public Notification received02-MAR-2026State -
9006733131393SIFState Public Notification received02-MAR-2026State -
  • 1 - 50 of 168

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
COPAN LAKE15865YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM17324NoDistribution System/Zone - - Active
RAW WATER PUMP STATION30666NoPump Facility - - Active
TOC RAW23197NoSampling Station - - Active
POE01 - WTP22548NoSampling Station - - Inactive
LARGER STANDPIPE BY PLANT23318NoStorage - - Active
SMALLER STANDPIPE BY PLANT23317NoStorage - - Inactive
COPAN WTP10962NoTreatment Plant - - Active
  • 1 - 8 of 8

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
COPAN WTP10962Hypochlorination, PostDisinfection
COPAN WTP10962pH Adjustment, PostCorrosion control
COPAN WTP10962SedimentationParticulate removal
COPAN WTP10962Filtration, Rapid SandParticulate removal
  • 1 - 4 of 4
For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.