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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	Nitrate Rule	Nitrate	2287533	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	09586181005	Returned to Compliance	01-JAN-2009	31-MAR-2009	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	08603451005	Returned to Compliance	01-JAN-2008	31-MAR-2008	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0391728	Returned to Compliance	01-JAN-2003	31-DEC-2003	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0391727	Returned to Compliance	01-JAN-2003	31-DEC-2003	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0391726	Returned to Compliance	01-JAN-2003	31-DEC-2003	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	93V0001	Returned to Compliance	01-JAN-1993	01-JAN-1994	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8051186	Known	01-OCT-1979	31-OCT-1979	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
2787533ENF	2287533	SOX	State Compliance achieved	21-MAR-2023	State	-
CM2010	09586181005	SOX	State Compliance achieved	27-MAY-2009	State	-
CM1509	08603451005	SOX	State Compliance achieved	08-APR-2008	State	-
N1190	0391727	SOX	State Compliance achieved	09-JAN-2004	State	-
N1190	0391726	SOX	State Compliance achieved	09-JAN-2004	State	-
N1190	0391728	SOX	State Compliance achieved	09-JAN-2004	State	-
9499999	93V0001	SOX	State Compliance achieved	01-JAN-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
Redmond	29793	Yes	Consecutive Connection	Surface water	Emergency	Active
WELLS #2R,6,7 WF	23415	Yes	Well	Ground water	Permanent	Active
WELL #7	23414	Yes	Well	Ground water	Permanent	Active
WELL #6	23413	Yes	Well	Ground water	Permanent	Active
WELL #2-R	23412	Yes	Well	Ground water	Permanent	Active
WELL #4	23411	Yes	Well	Ground water	Permanent	Active
WELL #3	23410	Yes	Well	Ground water	Permanent	Active
WELL #2	23409	Yes	Well	Ground water	Emergency	Inactive
Sammamish Plateau (4)	29792	Yes	Consecutive Connection	Ground water	Permanent	Active
Union Hill Water Association	31832	Yes	Consecutive Connection	Ground water	Permanent	Inactive
Well 3 and 4	4303	No	Treatment Plant	-	-	Active

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
Well 3 and 4	4303	Activated Alumina	Inorganics removal
Well 3 and 4	4303	Activated Carbon, Granular	Taste / odor control

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