Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA5400665
PWS Name	DEL ORO RIVER ISLAND SERV TERR #1
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	1280
County Served	Tulare

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	Radionuclides and Revised Rad Rule	Combined Uranium	9900053	Known	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9900031	Known	01-APR-2024	30-JUN-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900052	Known	01-JAN-2024	31-MAR-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900051	Known	01-OCT-2023	31-DEC-2023	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9900029	Known	01-AUG-2023	31-AUG-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900050	Known	01-JUL-2023	30-SEP-2023	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9900028	Known	01-JUL-2023	31-JUL-2023	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9900027	Known	01-JUN-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900049	Known	01-APR-2023	30-JUN-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900048	Known	01-JAN-2023	31-MAR-2023	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900047	Known	01-OCT-2022	31-DEC-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900046	Known	01-JUL-2022	30-SEP-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900045	Known	01-APR-2022	30-JUN-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900044	Known	01-JAN-2022	31-MAR-2022	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900043	Known	01-OCT-2021	31-DEC-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900042	Known	01-JUL-2021	30-SEP-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900041	Known	01-APR-2021	30-JUN-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900040	Known	01-JAN-2021	31-MAR-2021	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900039	Known	01-OCT-2020	31-DEC-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900038	Known	01-JUL-2020	30-SEP-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900037	Known	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900036	Known	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900035	Known	01-OCT-2019	31-DEC-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900034	Known	01-JUL-2019	30-SEP-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900033	Known	01-APR-2019	30-JUN-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900032	Known	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900026	Known	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900025	Known	01-APR-2018	30-JUN-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900024	Known	01-JAN-2018	31-MAR-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900023	Known	01-OCT-2017	31-DEC-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900022	Known	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	9900021	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900020	Known	01-JUL-2016	30-SEP-2016	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	9900014	Returned to Compliance	01-JUL-2016	30-SEP-2016	No
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900019	Known	01-APR-2016	30-JUN-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900018	Known	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900017	Known	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900016	Known	01-JUL-2015	30-SEP-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900015	Known	01-APR-2015	30-JUN-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900012	Known	01-JAN-2015	31-MAR-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900011	Known	01-OCT-2014	31-DEC-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900010	Known	01-JUL-2014	30-SEP-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900009	Known	01-APR-2014	30-JUN-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900008	Known	01-JAN-2014	31-MAR-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900007	Known	01-OCT-2013	31-DEC-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900006	Known	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900005	Known	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900004	Known	01-JAN-2013	31-MAR-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900003	Known	01-OCT-2012	31-DEC-2012	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9900002	Known	01-JUL-2012	30-SEP-2012	Yes

1 - 50 of 104

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9900289	9900031	SFL	State Administrative/Compliance Order without penalty issued	15-JUL-2024	State	Amend CO 03_12_23R_001 Nitrate MCL Exc
9900286	9900027	SFL	State Administrative/Compliance Order without penalty issued	21-AUG-2023	State	Nitrate MCL Exc.
9900286	9900028	SFL	State Administrative/Compliance Order without penalty issued	21-AUG-2023	State	Nitrate MCL Exc.
9900286	9900029	SFL	State Administrative/Compliance Order without penalty issued	21-AUG-2023	State	Nitrate MCL Exc.
9900285	300010	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	9900014	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	812048	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	812047	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	712046	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	612049	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	512044	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	512043	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	512034	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	512031	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	512026	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	300008	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	9900021	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	400012	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	400013	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	400016	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	400021	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900285	400024	SOX	State Compliance achieved	10-APR-2019	State	RTC Nitrate, levels <MCL.
9900282	9900013	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	712033	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	612032	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	512029	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	512028	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	300004	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	400020	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	400015	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	300006	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	300005	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900282	400023	SOX	State Compliance achieved	12-MAR-2018	State	RTC: LCR S: 7/7/15 & 9/25/06, 2004 CCR rec'd 7/5/05 and old TCRs.
9900283	9900022	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900023	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900024	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900025	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900026	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900032	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900033	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900034	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900035	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900036	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900037	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900038	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900039	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900040	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900041	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900042	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5
9900283	9900043	SFL	State Administrative/Compliance Order without penalty issued	16-NOV-2017	State	Nitrate MCL Exc Well 33 & UR MCL Exc Wells 2 & 5

1 - 50 of 98

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PLEASANT VALLEY CANAL-RAW SW	73835	Yes	Intake	Surface water	Permanent	Active
WELL 04 - BEFORE_IX-UR_TRT	23562	Yes	Well	Ground water	Permanent	Active
WELL 12 - RAW	17634	Yes	Well	Ground water	Permanent	Active
WELL 02 - BEFORE_IX-UR_TRT	17631	Yes	Well	Ground water	Permanent	Active
WELL 05 - BEFORE_IX-UR_TRT	17578	Yes	Well	Ground water	Permanent	Active
WELL 32 - BEFORE_IX-UR_TRT	15114	Yes	Well	Ground water	Permanent	Active
WELL 31 - BEFORE_IX-UR_TRT	15113	Yes	Well	Ground water	Permanent	Active
WELL 30 - BEFORE_IX-UR_TRT	15112	Yes	Well	Ground water	Permanent	Active
WELL 23 ATHERTON - RAW	15111	Yes	Well	Ground water	Permanent	Active
WEISENBERGER WELL NO. 02-INAC 2023	35324	Yes	Well	Ground water	Other	Inactive
WEISENBERGER WELL NO. 01-INAC 2023	35323	Yes	Well	Ground water	Other	Inactive
WELL 18 - INACTIVE	23584	Yes	Well	Ground water	Other	Inactive
WELL 19 - INACTIVE	23578	Yes	Well	Ground water	Other	Inactive
WELL 20 - INACTIVE	23576	Yes	Well	Ground water	Other	Inactive
WELL 01 - INACTIVE	23566	Yes	Well	Ground water	Other	Inactive
WELL 16 - KING - INACTIVE	23561	Yes	Well	Ground water	Other	Inactive
WELL 22 - JONES - INACTIVE	23557	Yes	Well	Ground water	Other	Inactive
WELL 24 - INACTIVE	23539	Yes	Well	Ground water	Other	Inactive
WELL 17 - INACTIVE	23538	Yes	Well	Ground water	Other	Inactive
WELL 11 - INAC2024	17632	Yes	Well	Ground water	Other	Inactive
WELL 14-DESTRYD 2023	17601	Yes	Well	Ground water	Other	Inactive
WELL 33 - RAW INAC2024	15124	Yes	Well	Ground water	Other	Inactive
WELL 21 - INAC RIVERFIELD	15110	Yes	Well	Ground water	Other	Inactive
WELL 16 - INACTIVE	23564	Yes	Well	Ground water	Interim	Inactive
WELL 15 - INACTIVE	23551	Yes	Well	Ground water	Interim	Inactive
WELL 03 - INACTIVE	23542	Yes	Well	Ground water	Interim	Inactive
WELL 34 - STBY2024	15116	Yes	Well	Ground water	Emergency	Active
DISTRIBUTION SYSTEM	33830	No	Distribution System/Zone	-	-	Active
WELL 33 - CL2	68734	No	Treatment Plant	-	-	Active
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	No	Treatment Plant	-	-	Active
COMB WELLS 2,4,5 - AFTER_IX-UR_EFF	75399	No	Treatment Plant	-	-	Active
COMB WELLS 30,31,32 - AFTER_IX-UR_EFF	75400	No	Treatment Plant	-	-	Active
WELL 12 - CL2	75401	No	Treatment Plant	-	-	Active
WELL 23 ATHERTON - CL2	75402	No	Treatment Plant	-	-	Active
BLEND FROM WELLS 02,04,05 INAC	4401	No	Treatment Plant	-	-	Inactive
WELL 02 - CL2 INAC2025	68733	No	Treatment Plant	-	-	Inactive

1 - 36 of 36

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 02 - CL2 INAC2025	68733	Hypochlorination, Post	Disinfection
WELL 33 - CL2	68734	Hypochlorination, Post	Disinfection
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	pH Adjustment, Pre	Particulate removal
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	Flocculation	Particulate removal
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	Hypochlorination, Pre	Disinfection
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	Filtered	Particulate removal
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	Flocculation	Particulate removal
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	Filtration, Rapid Sand	Particulate removal
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	pH Adjustment, Post	Corrosion control
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	Hypochlorination, Post	Disinfection
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	3-Log Remove/Inactivate G Lamblia	Disinfection
PLEASANT VALLEY CANAL-TRT_SW-EFF	73836	4-Log Remove/Inactivate Viruses	Disinfection
COMB WELLS 2,4,5 - AFTER_IX-UR_EFF	75399	Ion Exchange	Radionuclides removal
COMB WELLS 2,4,5 - AFTER_IX-UR_EFF	75399	Hypochlorination, Post	Disinfection
COMB WELLS 30,31,32 - AFTER_IX-UR_EFF	75400	Ion Exchange	Radionuclides removal
COMB WELLS 30,31,32 - AFTER_IX-UR_EFF	75400	Hypochlorination, Post	Disinfection
WELL 12 - CL2	75401	Hypochlorination, Post	Disinfection
WELL 23 ATHERTON - CL2	75402	Hypochlorination, Post	Disinfection

1 - 18 of 18

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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