Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	WA5390050
PWS Name	TWISP TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1055
County Served	Okanogan

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	2288337	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2288494	Returned to Compliance	01-JAN-2022	31-DEC-2022	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2590221	Returned to Compliance	01-MAY-2020	31-MAY-2020	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0708408	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0708327	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0521931	Known	01-OCT-2005	31-OCT-2005	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	07702472050	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	07702472005	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	07702472010	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	07702472015	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	07702472020	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	07702472035	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Simazine	07702472037	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	07702472039	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Hexachlorocyclopentadiene	07702472042	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	07702472051	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	07702472065	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	07702472067	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0536821	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0536814	Returned to Compliance	01-JAN-2005	31-DEC-2005	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	07702472274	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	07702472306	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Chlordane	07702472959	Returned to Compliance	01-JAN-2005	31-DEC-2007	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Pentachlorophenol	07702472326	Known	01-JAN-2005	31-DEC-2007	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	0464860	Known	01-SEP-2004	30-SEP-2004	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0053045	Known	01-AUG-2000	31-AUG-2000	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9575573	Known	01-SEP-1995	30-SEP-1995	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9325903	Known	01-FEB-1993	28-FEB-1993	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9302644	Known	01-OCT-1992	31-OCT-1992	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9202854	Known	01-SEP-1992	30-SEP-1992	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9201684	Known	01-JAN-1992	31-JAN-1992	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	9202390	Known	01-NOV-1991	30-NOV-1991	Yes
MR	Monitoring, Repeat Minor (TCR)	Total Coliform Rule	Coliform (TCR)	9202389	Known	01-NOV-1991	30-NOV-1991	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	8059822	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	8059824	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	8059826	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	8059827	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	8059828	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	8059823	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8051734	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	8059821	Known	01-OCT-1979	31-OCT-1979	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	8059820	Known	01-OCT-1979	31-OCT-1979	No

1 - 42 of 42

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2788337ENF	2288337	SOX	State Compliance achieved	07-MAR-2023	State	-
2788494ENF	2288494	SOX	State Compliance achieved	07-MAR-2023	State	-
2590221ENF	2590221	SOX	State Compliance achieved	04-JUN-2020	State	-
CM1867	07702472015	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472959	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472306	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472274	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472065	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472051	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472050	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472042	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472039	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472037	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472035	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472005	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472010	SOX	State Compliance achieved	23-JUN-2008	State	-
CM1867	07702472020	SOX	State Compliance achieved	23-JUN-2008	State	-
N1115	0708327	SOX	State Compliance achieved	19-FEB-2008	State	-
N1115	0708408	SOX	State Compliance achieved	19-FEB-2008	State	-
CM999	07702472067	SOX	State Compliance achieved	01-JAN-2008	State	-
N916	0536821	SOX	State Compliance achieved	03-JAN-2006	State	-
N916	0536814	SOX	State Compliance achieved	03-JAN-2006	State	-
0000153	0053045	SIA	State Violation/Reminder Notice	31-AUG-2000	State	-
9500145	9575573	SIA	State Violation/Reminder Notice	30-SEP-1995	State	-
9301646	9325903	SIA	State Violation/Reminder Notice	28-FEB-1993	State	-
9302282	9302644	SIA	State Violation/Reminder Notice	31-OCT-1992	State	-
9229579	9202854	SIA	State Violation/Reminder Notice	30-SEP-1992	State	-
9211011	9202390	SIF	State Public Notification received	30-NOV-1991	State	-

1 - 28 of 28

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
Well #4 - ACL692	29176	Yes	Well	Ground water	Emergency	Active
Well #1	25296	Yes	Well	Ground water	Emergency	Inactive
Well #3 - AGJ154	25297	Yes	Well	Ground water	Permanent	Active
Well #2 - AGJ153	25298	Yes	Well	Ground water	Permanent	Active
Well 4R - BMU673	34341	Yes	Well	Ground water	Permanent	Active

1 - 5 of 5

Treatment Processes

No treatment process(es) found. EPA has no record of treatment process(es) reported by the primacy agency for this water system.

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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