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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.

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Violations

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Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MR	Monitoring, Regular	Arsenic Rule	Arsenic	6781080	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	6781380	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	6781880	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	6781780	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	6781680	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	6781180	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	6781480	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	6781280	Known	24-JUN-1979	23-JUN-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	6465780	Known	01-JUN-1976	31-MAY-1980	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Combined Radium (-226 and -228)	6465980	Known	01-JUN-1976	31-MAY-1980	No

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Enforcement Actions

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No enforcement action(s) found. EPA has no record of enforcement action(s) reported by the primacy agency for this water system.

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MCKENZIE RIVER	11788	Yes	Intake	Surface water	Permanent	Active
COMMON HEADER FOR WTP-A	19151	No	Common Headers	-	-	Active
DISTRIBUTION SYSTEM	6939	No	Distribution System/Zone	-	-	Active
EP FOR WTP McKENZIE RIVER	17330	No	Sampling Station	-	-	Active
TP FOR MCKENZIE RIVER	137	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
TP FOR MCKENZIE RIVER	137	Activated Carbon, Powdered	Taste / odor control
TP FOR MCKENZIE RIVER	137	Coagulation	Particulate removal
TP FOR MCKENZIE RIVER	137	pH Adjustment, Pre	Particulate removal
TP FOR MCKENZIE RIVER	137	Rapid Mix	Particulate removal
TP FOR MCKENZIE RIVER	137	Flocculation	Particulate removal
TP FOR MCKENZIE RIVER	137	Sedimentation	Particulate removal
TP FOR MCKENZIE RIVER	137	Filtration, Rapid Sand	Particulate removal
TP FOR MCKENZIE RIVER	137	Innovative	Corrosion control
TP FOR MCKENZIE RIVER	137	Innovative	Disinfection

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