Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	AK2271999
PWS Name	BETHEL-CITY S/D WATER
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	1660
County Served	Bethel Census Area

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	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	5350742	Returned to Compliance	02-APR-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350740	Returned to Compliance	01-OCT-2023	31-DEC-2023	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350739	Returned to Compliance	01-OCT-2023	31-DEC-2023	No
Other	Failure to Consult with State	Ground Water Rule	Groundwater Rule	5350738	Returned to Compliance	15-NOV-2022	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350734	Returned to Compliance	01-APR-2022	30-JUN-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350735	Returned to Compliance	01-APR-2022	30-JUN-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350730	Returned to Compliance	01-JAN-2022	31-MAR-2022	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350731	Returned to Compliance	01-JAN-2022	31-MAR-2022	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350729	Returned to Compliance	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350724	Returned to Compliance	01-OCT-2021	31-DEC-2021	Yes
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	5350720	Returned to Compliance	01-JUL-2021	31-JUL-2021	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350723	Returned to Compliance	01-JUL-2021	30-SEP-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	5350727	Returned to Compliance	01-JUL-2021	30-SEP-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350722	Returned to Compliance	01-JUL-2021	30-SEP-2021	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350721	Returned to Compliance	01-JUL-2021	30-SEP-2021	No
MR	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350719	Returned to Compliance	30-JUN-2021	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350718	Returned to Compliance	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350717	Returned to Compliance	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350715	Returned to Compliance	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350713	Returned to Compliance	01-JUL-2020	30-SEP-2020	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	5350709	Returned to Compliance	01-JUL-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350746	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350711	Returned to Compliance	01-APR-2020	30-JUN-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350710	Returned to Compliance	01-APR-2020	30-JUN-2020	No
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	5350706	Returned to Compliance	10-JAN-2020	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350744	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350707	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350708	Returned to Compliance	01-JAN-2020	31-MAR-2020	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350745	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	5350703	Returned to Compliance	01-JUL-2016	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350702	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350701	Returned to Compliance	01-JAN-2015	31-DEC-2015	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	5350697	Returned to Compliance	02-JUL-2014	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	5350698	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	5350700	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350699	Returned to Compliance	01-JAN-2014	31-DEC-2014	No
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	5350694	Returned to Compliance	01-APR-2013	30-APR-2013	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350666	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	5350665	Returned to Compliance	01-JUL-2012	30-SEP-2012	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350672	Returned to Compliance	01-APR-2012	30-JUN-2012	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	5350662	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350663	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	5350671	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350661	Returned to Compliance	01-JAN-2012	31-MAR-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	5350660	Returned to Compliance	01-JAN-2012	31-MAR-2012	No
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350657	Returned to Compliance	01-OCT-2011	31-DEC-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350655	Returned to Compliance	01-JUL-2011	30-SEP-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	5350653	Returned to Compliance	01-APR-2011	30-JUN-2011	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	5350658	Returned to Compliance	01-JAN-2011	31-DEC-2011	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	ETHYLENE DIBROMIDE	5350551	Returned to Compliance	01-OCT-2010	31-DEC-2010	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
5332164	5350742	SOX	State Compliance achieved	25-SEP-2024	State	signed LCN received for PbCu samples taken december 2023 - edn
5332160	5350740	SOX	State Compliance achieved	14-MAR-2024	State	4th qtr DBP mon vio RTC'd with receipt of sample results taken 3/14/2024 - edn
5332160	5350739	SOX	State Compliance achieved	14-MAR-2024	State	4th qtr DBP mon vio RTC'd with receipt of sample results taken 3/14/2024 - edn
5332149	5350738	SOX	State Compliance achieved	15-NOV-2022	State	RTC violation, PWS called ADEC EPS for consult & action plan. kc
5332141	5350717	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332141	5350713	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332138	5350735	SOX	State Compliance achieved	13-SEP-2022	State	RTC vios for no DBPs. System sampled DBPs 09/13/2022. RTC entered 10/10/2022 - lm
5332138	5350734	SOX	State Compliance achieved	13-SEP-2022	State	RTC vios for no DBPs. System sampled DBPs 09/13/2022. RTC entered 10/10/2022 - lm
5332138	5350731	SOX	State Compliance achieved	13-SEP-2022	State	RTC vios for no DBPs. System sampled DBPs 09/13/2022. RTC entered 10/10/2022 - lm
5332138	5350730	SOX	State Compliance achieved	13-SEP-2022	State	RTC vios for no DBPs. System sampled DBPs 09/13/2022. RTC entered 10/10/2022 - lm
5332141	5350718	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332141	5350723	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332141	5350724	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332141	5350729	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332141	5350715	SOX	State Compliance achieved	13-SEP-2022	State	RTC MCL vios for HAA5. System's LRAA in 3Q2022 is 26 ug/L. System sampled 09/13/2022. RTC entered 10/21/2022. - lm
5332167	5350745	SOX	State Compliance achieved	30-JUN-2022	State	HAA5 MCL LRAA vio RTC'd with 2nd qtr 2022 LRAA - edn
5332167	5350744	SOX	State Compliance achieved	30-JUN-2022	State	HAA5 MCL LRAA vio RTC'd with 2nd qtr 2022 LRAA - edn
5332167	5350746	SOX	State Compliance achieved	30-JUN-2022	State	HAA5 MCL LRAA vio RTC'd with 2nd qtr 2022 LRAA - edn
5332125	5350721	SOX	State Compliance achieved	23-APR-2022	State	RTC violation for no DBPs in 3Q2021. System sampled 4Q2021 on 12/21/21. RTC entered 04/23/22 - lm
5332125	5350722	SOX	State Compliance achieved	23-APR-2022	State	RTC violation for no DBPs in 3Q2021. System sampled 4Q2021 on 12/21/21. RTC entered 04/23/22 - lm
5332126	5350727	SOX	State Compliance achieved	30-SEP-2021	State	RTC vio for too few DSRD in July and Aug 2021. System sampled 2 DSRD in Sept 2021. RTC entered 05/04/2022. - lm
5332109	5350719	SOX	State Compliance achieved	09-SEP-2021	State	RTC vio for late OELR. System submitted OELR 09/09/2021. RTC entered 09/09/2021 - lm
5332107	5350720	SOX	State Compliance achieved	30-AUG-2021	State	RTC vio for 1 of 2 required TC samples in July 2021. System sampled both required TC samples 08/30/2021. RTC entered 09/08/2021 - lm
5332098	5350706	SOX	State Compliance achieved	07-JUN-2021	State	Received photo documentation of resolved deficiency from Caleb Sleppy.ddb
5332079	5350710	SOX	State Compliance achieved	28-SEP-2020	State	RTC vios for no DBP samples. System sampled DBPs 09/28/2020. RTC entered 11/03/2020 - lm
5332079	5350708	SOX	State Compliance achieved	28-SEP-2020	State	RTC vios for no DBP samples. System sampled DBPs 09/28/2020. RTC entered 11/03/2020 - lm
5332079	5350707	SOX	State Compliance achieved	28-SEP-2020	State	RTC vios for no DBP samples. System sampled DBPs 09/28/2020. RTC entered 11/03/2020 - lm
5332079	5350711	SOX	State Compliance achieved	28-SEP-2020	State	RTC vios for no DBP samples. System sampled DBPs 09/28/2020. RTC entered 11/03/2020 - lm
5332076	5350709	SOX	State Compliance achieved	26-JUL-2020	State	RTC vio for no PbCu in first half of 2020. System sampled PbCu 07/26/2020. RTC entered 09/02/2020 - lm
5332038	5350698	SOX	State Compliance achieved	23-AUG-2017	State	RTC' lead and copper vio after sampling in first hald 2017, DBP vios after sampling in November 2016, and nitrate vio after sampling in 2016. -jf
5332038	5350699	SOX	State Compliance achieved	23-AUG-2017	State	RTC' lead and copper vio after sampling in first hald 2017, DBP vios after sampling in November 2016, and nitrate vio after sampling in 2016. -jf
5332038	5350700	SOX	State Compliance achieved	23-AUG-2017	State	RTC' lead and copper vio after sampling in first hald 2017, DBP vios after sampling in November 2016, and nitrate vio after sampling in 2016. -jf
5332038	5350701	SOX	State Compliance achieved	23-AUG-2017	State	RTC' lead and copper vio after sampling in first hald 2017, DBP vios after sampling in November 2016, and nitrate vio after sampling in 2016. -jf
5332038	5350702	SOX	State Compliance achieved	23-AUG-2017	State	RTC' lead and copper vio after sampling in first hald 2017, DBP vios after sampling in November 2016, and nitrate vio after sampling in 2016. -jf
5332038	5350703	SOX	State Compliance achieved	23-AUG-2017	State	RTC' lead and copper vio after sampling in first hald 2017, DBP vios after sampling in November 2016, and nitrate vio after sampling in 2016. -jf
5331990	5350697	SOX	State Compliance achieved	30-SEP-2014	State	RTC'd w/ submittal of revised CCR report & CCR Cert Page and w/ dates of distribution for both original & revised CCR reports. Action entered 10/24/14.- lvs
5331977	5350694	SOX	State Compliance achieved	10-JUN-2013	State	Letter sent to PWS acknowledging they met all required repeats & additional TCR monitoring referencing the two DW events in April (TC+ on 4/8/13 & Loss of water pressure on 4/20/13). Therefore, they have returned to compliance and may return to Routine TCR monitoring effective in June 2013.
5331966	5350523	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350524	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350525	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350526	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350527	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350528	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350529	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350530	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350531	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350532	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350533	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350534	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.
5331966	5350535	SOX	State Compliance achieved	27-FEB-2013	State	RTC vio 03 all 4 quarters SOCs 2010 with 2011-2013 SOC waiver granted. Action taken 3/4/13.

1 - 50 of 263

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 1	33709	Yes	Well	Ground water	Permanent	Active
DISTRIBUTION SYSTEM	38270	No	Distribution System/Zone	-	-	Active
INACTIVE - STAGE 2 IDSE	48497	No	Distribution System/Zone	-	-	Inactive
INACTIVE / UNUSED FACILITY TYPE	40183	No	Sampling Station	-	-	Inactive
STORAGE TANK- 500K GAL	31773	No	Storage	-	-	Active
WATER HAULING TRUCK	48124	No	Storage	-	-	Inactive
TREATMENT PLANT	32247	No	Treatment Plant	-	-	Active

1 - 7 of 7

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	32247	Fluoridation	Other
TREATMENT PLANT	32247	Filtration, Greensand	Iron removal
TREATMENT PLANT	32247	Permanganate	Iron removal
TREATMENT PLANT	32247	Filtration, Greensand	Manganese removal
TREATMENT PLANT	32247	Permanganate	Manganese removal
TREATMENT PLANT	32247	Coagulation	Disinfection by-products control
TREATMENT PLANT	32247	Hypochlorination, Post	Disinfection
TREATMENT PLANT	32247	Innovative	Corrosion control

1 - 8 of 8

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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