Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WA5306029
PWS Name	YAK CO - TERRACE HEIGHTS
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	8410
County Served	Yakima

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.

Violations

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	2588003	Returned to Compliance	01-JAN-2025	31-DEC-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2587878	Returned to Compliance	01-JAN-2025	31-DEC-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2588004	Returned to Compliance	01-JAN-2025	31-DEC-2025	No
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	3022081	Returned to Compliance	01-AUG-2023	31-AUG-2023	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2871237	Returned to Compliance	01-OCT-2022	31-OCT-2022	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	25988582987	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	25988582378	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	25988582996	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	25988582992	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	25988582991	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	25988582990	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	25988582989	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	25988582380	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	25988582985	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	25988582984	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	25988582983	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	25988582982	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	25988582981	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	25988582980	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	25988582979	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	25988582977	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	25988582976	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	25988582969	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	25988582968	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	25988582964	Returned to Compliance	01-JAN-2020	31-DEC-2025	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1435704	Returned to Compliance	01-JUL-2014	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	1,2-DIBROMO-3-CHLOROPROPANE	08869132931	Known	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	08869422032	Known	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	08869132946	Known	01-APR-2008	30-JUN-2008	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	07846272032	Returned to Compliance	01-OCT-2007	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Diquat	07584812032	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	07392662992	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	07392662991	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	07392662990	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	07392662989	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	07392662987	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	07392662985	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	07392662984	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	07392662983	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	07392662982	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	07392662996	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0797108	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	07392662981	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	07392662378	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	07392662380	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	07392662964	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	07392662980	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	07392662979	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	07392662977	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	07392662976	Returned to Compliance	01-JAN-2007	31-DEC-2007	No

1 - 50 of 56

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2498858ENF	25988582983	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582987	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582981	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582980	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582979	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582977	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582976	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582969	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582968	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582964	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582380	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582378	SOX	State Compliance achieved	30-APR-2026	State	-
3188004ENF	2588004	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582982	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582989	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582990	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582991	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582992	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582996	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582985	SOX	State Compliance achieved	30-APR-2026	State	-
2498858ENF	25988582984	SOX	State Compliance achieved	30-APR-2026	State	-
3187878ENF	2587878	SOX	State Compliance achieved	27-MAR-2026	State	-
3188003ENF	2588003	SOX	State Compliance achieved	27-MAR-2026	State	-
3022081ENF	3022081	SOX	State Compliance achieved	18-SEP-2023	State	-
2871237ENF	2871237	SOX	State Compliance achieved	08-NOV-2022	State	-
35704ENF	1435704	SOX	State Compliance achieved	01-SEP-2014	State	-
CM1989	07392662992	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662991	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662990	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662989	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662987	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662985	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662984	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662983	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662982	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662981	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662980	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662979	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662977	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662976	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662969	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662968	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662964	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662380	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662378	SOX	State Compliance achieved	11-JUN-2008	State	-
CM1989	07392662996	SOX	State Compliance achieved	11-JUN-2008	State	-
N197	0797108	SOX	State Compliance achieved	11-MAR-2008	State	-
CM409	07846272032	SOX	State Compliance achieved	01-JAN-2008	State	-
CM428	07584812032	SOX	State Compliance achieved	01-JAN-2008	State	-
0093002	9993002	SOX	State Compliance achieved	01-JAN-2000	State	-

1 - 50 of 53

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
COYOTE SPGS 1	6669	Yes	Well	Ground water	Emergency	Active
WELL 3 - AAL529	6671	Yes	Well	Ground water	Seasonal	Active
WELL 6	6674	Yes	Well	Ground water	Permanent	Active
WELL 5	6673	Yes	Well	Ground water	Permanent	Active
WELL 4	6672	Yes	Well	Ground water	Permanent	Active
WELL 2 - ABR567	6670	Yes	Well	Ground water	Permanent	Active
Well #2	3219	No	Treatment Plant	-	-	Active
Well 3	3220	No	Treatment Plant	-	-	Active
Well 5	3221	No	Treatment Plant	-	-	Active
Well 6	3222	No	Treatment Plant	-	-	Active
Well 4	4776	No	Treatment Plant	-	-	Active

1 - 11 of 11

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
Well #2	3219	Hypochlorination, Post	Disinfection
Well 3	3220	Gaseous Chlorination, Post	Disinfection
Well 5	3221	Hypochlorination, Post	Disinfection
Well 6	3222	Hypochlorination, Post	Disinfection
Well 4	4776	Hypochlorination, Post	Disinfection

1 - 5 of 5

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.

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