Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WA5392500
PWS Name	WALLA WALLA WATER DIVISION
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	Yes
Population Served	42959
County Served	Walla Walla

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	2327247	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	22706402031	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	22706402326	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	22706402110	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	22706402041	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	22706402040	Returned to Compliance	01-OCT-2022	31-DEC-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	22466762041	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	22466762031	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	22466762326	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	22466762110	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	22466762040	Returned to Compliance	01-JUL-2022	30-SEP-2022	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dinoseb	21988792041	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	21988792110	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Picloram	21988792040	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Dalapon	21988792031	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	21988792326	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2664131	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2667122	Returned to Compliance	01-JAN-2021	31-MAR-2021	No
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2360005	Returned to Compliance	01-DEC-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2360004	Returned to Compliance	01-NOV-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2360003	Returned to Compliance	01-OCT-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2360002	Returned to Compliance	01-SEP-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2360001	Returned to Compliance	01-AUG-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2301418	Returned to Compliance	01-JUL-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2301417	Returned to Compliance	01-JUN-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2360000	Returned to Compliance	01-MAY-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2359999	Returned to Compliance	01-APR-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2359997	Returned to Compliance	01-MAR-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2359996	Returned to Compliance	01-FEB-2018	-	Yes
TT	Failure to Filter (SWTR)	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	2359995	Returned to Compliance	01-JAN-2018	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2251167	Returned to Compliance	01-DEC-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2227330	Returned to Compliance	01-NOV-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2227329	Returned to Compliance	01-OCT-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2227328	Returned to Compliance	01-SEP-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2206596	Returned to Compliance	01-AUG-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2206595	Returned to Compliance	01-JUL-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2206594	Returned to Compliance	01-JUN-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2227327	Returned to Compliance	01-MAY-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180663	Returned to Compliance	01-APR-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180662	Returned to Compliance	01-MAR-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180661	Returned to Compliance	01-FEB-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180660	Returned to Compliance	01-JAN-2017	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180659	Returned to Compliance	01-DEC-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180658	Returned to Compliance	01-NOV-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180657	Returned to Compliance	01-OCT-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180656	Returned to Compliance	01-SEP-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180655	Returned to Compliance	01-AUG-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180654	Returned to Compliance	01-JUL-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180653	Returned to Compliance	01-JUN-2016	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2180652	Returned to Compliance	01-MAY-2016	-	Yes

1 - 50 of 92

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2927247ENF	2327247	SOX	State Compliance achieved	08-JUL-2025	State	-
2870640ENF	22466762040	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22466762031	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22706402031	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22706402040	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22466762326	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22706402110	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22706402326	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22466762110	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22466762041	SOX	State Compliance achieved	25-NOV-2024	State	-
2870640ENF	22706402041	SOX	State Compliance achieved	25-NOV-2024	State	-
1926478ENF	19264781085	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781075	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781074	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781045	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781036	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781035	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781025	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781024	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781020	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781015	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781010	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781005	SOX	State Compliance achieved	16-FEB-2022	State	-
1926478ENF	19264781041	SOX	State Compliance achieved	16-FEB-2022	State	-
2698879ENF	21988792110	SOX	State Compliance achieved	24-AUG-2021	State	-
2698879ENF	21988792041	SOX	State Compliance achieved	24-AUG-2021	State	-
2698879ENF	21988792040	SOX	State Compliance achieved	24-AUG-2021	State	-
2698879ENF	21988792031	SOX	State Compliance achieved	24-AUG-2021	State	-
2698879ENF	21988792326	SOX	State Compliance achieved	24-AUG-2021	State	-
2667122ENF	2667122	SOX	State Compliance achieved	25-MAY-2021	State	-
2664131ENF	2664131	SOX	State Compliance achieved	25-MAY-2021	State	-
2251167ENF	2009915	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2009916	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2009917	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180648	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180649	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180650	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180651	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180652	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180653	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180654	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180655	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180656	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180657	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180658	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180659	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180660	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180661	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180662	SOX	State Compliance achieved	19-MAY-2020	State	-
2251167ENF	2180663	SOX	State Compliance achieved	19-MAY-2020	State	-

1 - 50 of 76

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
92430P/Walla Walla Airport	25615	Yes	Consecutive Connection	Ground water	Emergency	Active
WF/S02,S03,S04	25616	Yes	Well	Ground water	Seasonal	Active
College Well - AGG265	25614	Yes	Well	Ground water	Seasonal	Active
Well #6 - AGG256	25612	Yes	Well	Ground water	Seasonal	Active
Well #5 - AGG263	25611	Yes	Well	Ground water	Seasonal	Active
Well #4 - AGG266	25610	Yes	Well	Ground water	Seasonal	Active
Well #3 - AGG264	25609	Yes	Well	Ground water	Seasonal	Active
Well #2 - AGG258	25608	Yes	Well	Ground water	Seasonal	Active
Well #1 - AGG274	25607	Yes	Well	Ground water	Seasonal	Active
Well #7 - AGG267	25613	Yes	Well	Ground water	Emergency	Active
Mill Creek Water Shed	25606	Yes	Intake	Surface water	Permanent	Active
Walla Walla Mill Crk Headworks	4674	No	Treatment Plant	-	-	Active
Well #1 - AGG274	4756	No	Treatment Plant	-	-	Active
Well #2 - AGG258	4757	No	Treatment Plant	-	-	Active
Well #3 - AGG264	4758	No	Treatment Plant	-	-	Active
Well #4 - AGG266	4759	No	Treatment Plant	-	-	Active
Well #5 - AGG263	4760	No	Treatment Plant	-	-	Active
Well #6 - AGG256	4761	No	Treatment Plant	-	-	Active
Well #7 - AGG267	4762	No	Treatment Plant	-	-	Active
College Well - AGG265	4763	No	Treatment Plant	-	-	Active
92430P/Walla Walla Airport	4764	No	Treatment Plant	-	-	Active

1 - 21 of 21

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
Walla Walla Mill Crk Headworks	4674	Filtered	Particulate removal
Walla Walla Mill Crk Headworks	4674	Gaseous Chlorination, Post	Disinfection
Walla Walla Mill Crk Headworks	4674	Ultraviolet Radiation	Disinfection
Well #1 - AGG274	4756	Gaseous Chlorination, Post	Disinfection
Well #2 - AGG258	4757	Gaseous Chlorination, Post	Disinfection
Well #3 - AGG264	4758	Gaseous Chlorination, Post	Disinfection
Well #4 - AGG266	4759	Gaseous Chlorination, Post	Disinfection
Well #5 - AGG263	4760	Gaseous Chlorination, Post	Disinfection
Well #6 - AGG256	4761	Gaseous Chlorination, Post	Disinfection
Well #7 - AGG267	4762	Gaseous Chlorination, Post	Disinfection
College Well - AGG265	4763	Gaseous Chlorination, Post	Disinfection
92430P/Walla Walla Airport	4764	Hypochlorination, Post	Disinfection

1 - 12 of 12

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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