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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 and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	20230015981	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	20230015903	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	20190011558	Returned to Compliance	01-JUL-2019	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	20200004519	Returned to Compliance	01-JAN-2019	31-DEC-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	20190012480	Returned to Compliance	01-JAN-2019	31-DEC-2019	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	20190012549	Returned to Compliance	01-JAN-2019	31-DEC-2019	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	20150005180	Returned to Compliance	11-AUG-2015	-	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	20070000692	Returned to Compliance	01-OCT-2006	31-OCT-2006	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	20060000449	Returned to Compliance	01-OCT-2005	31-OCT-2005	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	20030004706	Returned to Compliance	01-JUL-2003	-	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	97V0001	Known	01-FEB-1997	28-FEB-1997	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	94V0001	Known	01-SEP-1994	30-SEP-1994	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	88V0007	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	88V0005	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	88V0003	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	88V0008	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	88V0009	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	88V0010	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	88V0011	Known	01-OCT-1984	30-SEP-1987	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	88V0004	Known	01-OCT-1984	30-SEP-1987	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
631900	20230015903	SOX	State Compliance achieved	12-OCT-2023	State	-
631900	20230015981	SOX	State Compliance achieved	12-OCT-2023	State	-
549616	20190012549	SOX	State Compliance achieved	24-MAR-2020	State	-
549616	20190012480	SOX	State Compliance achieved	24-MAR-2020	State	-
548923	20200004519	SOX	State Compliance achieved	31-JAN-2020	State	-
538251	20190011558	SOX	State Compliance achieved	07-OCT-2019	State	-
496797	20150005180	SOX	State Compliance achieved	30-MAY-2015	State	-
212644	20070000692	SOX	State Compliance achieved	17-NOV-2006	State	-
188148	20060000449	SOX	State Compliance achieved	09-JAN-2006	State	-
152242	20030004706	SOX	State Compliance achieved	28-JUL-2003	State	-
94E0003	94V0001	SIA	State Violation/Reminder Notice	12-SEP-1994	State	-

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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
WELL #3	4359752284	Yes	Well	Ground water	Permanent	Active
WELL 2 N OF PLT AREA	49954809	Yes	Well	Ground water	Permanent	Active
WELL 1 INSIDE PLT	49944808	Yes	Well	Ground water	Permanent	Active
UMATILLA WATER WORKS WTP #2	391183351402	No	Treatment Plant	-	-	Active
UMATILLA WATER WORKS WTP #1	43173351402	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
UMATILLA WATER WORKS WTP #2	391183351402	Gaseous Chlorination, Post	Disinfection
UMATILLA WATER WORKS WTP #2	391183351402	Fluoridation	Other
UMATILLA WATER WORKS WTP #1	43173351402	Gaseous Chlorination, Post	Disinfection
UMATILLA WATER WORKS WTP #1	43173351402	Aeration, Slat Tray	Taste / odor control
UMATILLA WATER WORKS WTP #1	43173351402	Fluoridation	Other

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