Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	OK3006101
PWS Name	HARTSHORNE
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	2300
County Served	Pittsburg

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
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271612	Known	01-OCT-2024	31-DEC-2024	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271611	Returned to Compliance	29-SEP-2024	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271609	Known	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271610	Known	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271608	Known	01-JAN-2024	31-MAR-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271607	Known	01-JAN-2024	31-MAR-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271606	Known	01-OCT-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271605	Known	01-OCT-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271604	Known	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271603	Known	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271602	Known	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271601	Known	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271599	Known	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271600	Known	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271598	Known	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271597	Known	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271596	Known	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271595	Known	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271593	Known	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271594	Known	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271592	Known	01-OCT-2021	31-DEC-2021	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271591	Returned to Compliance	29-SEP-2021	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271590	Known	01-JUL-2021	30-SEP-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271588	Known	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271589	Known	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271587	Known	01-OCT-2019	31-DEC-2019	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271586	Returned to Compliance	29-SEP-2019	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271585	Known	01-JUL-2019	30-SEP-2019	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271584	Returned to Compliance	30-JUN-2019	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271583	Known	01-APR-2019	30-JUN-2019	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271582	Returned to Compliance	01-APR-2019	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271580	Known	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271581	Known	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271578	Known	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271579	Known	01-OCT-2018	31-DEC-2018	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271575	Returned to Compliance	29-SEP-2018	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271576	Known	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271577	Known	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271573	Known	01-APR-2018	30-JUN-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271572	Known	01-JAN-2018	31-MAR-2018	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	271568	Known	01-NOV-2017	30-NOV-2017	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271571	Known	01-OCT-2017	31-DEC-2017	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	271563	Returned to Compliance	01-OCT-2017	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	271565	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	271564	Returned to Compliance	01-JUL-2017	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271566	Known	01-JUL-2017	30-SEP-2017	Yes
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271560	Returned to Compliance	30-JUN-2017	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	271559	Returned to Compliance	01-APR-2017	30-JUN-2017	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271558	Returned to Compliance	01-APR-2017	30-JUN-2017	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	271557	Known	01-APR-2017	30-JUN-2017	Yes

1 - 50 of 109

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9045886	271612	SIE	State Public Notification requested	26-FEB-2025	State	-
9045884	271611	SOX	State Compliance achieved	20-DEC-2024	State	-
9045840	271517	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271519	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271523	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271528	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271535	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271539	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271541	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271549	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271552	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271554	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271555	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271556	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271557	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271566	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271571	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271572	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271573	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271576	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271577	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271578	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271579	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271580	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271581	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271583	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271585	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271587	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271588	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271589	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271590	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271592	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271593	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271594	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271595	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271596	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271597	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271598	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271599	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271600	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271601	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271602	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271603	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271604	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271605	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271606	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271607	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271608	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271609	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.
9045840	271610	SFO	State Administrative/Compliance Order with penalty issued	30-SEP-2024	State	Stage 2 DBP TTHM MCL & HAA5 MCL. CO 16-290 dated 11.18.2016. Superseded by Addendum A 10.13.2020.

1 - 50 of 109

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PITTS CO WA	16893	Yes	Consecutive Connection	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	18876	No	Distribution System/Zone	-	-	Active
HARTSHORNE WATER TOWER	28896	No	Storage	-	-	Active
CHLORINATION STATION	11201	No	Treatment Plant	-	-	Inactive

1 - 4 of 4

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CHLORINATION STATION	11201	Hypochlorination, Post	Disinfection

1 - 1 of 1

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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