Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA2010007
PWS Name	CAL AM - OAKHURST
PWS Type	Community water system
Owner Type	Private
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	3693
County Served	Madera

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	9911056	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911055	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911054	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911053	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911052	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911051	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911049	Returned to Compliance	01-APR-2018	30-JUN-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911050	Returned to Compliance	01-APR-2018	30-JUN-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911047	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911048	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911046	Returned to Compliance	01-OCT-2017	31-DEC-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911045	Returned to Compliance	01-OCT-2017	31-DEC-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911044	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911043	Returned to Compliance	01-JUL-2017	30-SEP-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911041	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911042	Returned to Compliance	01-APR-2017	30-JUN-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911040	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911039	Returned to Compliance	01-JAN-2017	31-MAR-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911037	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911038	Returned to Compliance	01-OCT-2016	31-DEC-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911035	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911036	Returned to Compliance	01-JUL-2016	30-SEP-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911033	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911034	Returned to Compliance	01-APR-2016	30-JUN-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911032	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911031	Returned to Compliance	01-JAN-2016	31-MAR-2016	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911030	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911029	Returned to Compliance	01-OCT-2015	31-DEC-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911027	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911026	Returned to Compliance	01-JUL-2015	30-SEP-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911025	Returned to Compliance	01-APR-2015	30-JUN-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911028	Returned to Compliance	01-APR-2015	30-JUN-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911023	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911024	Returned to Compliance	01-JAN-2015	31-MAR-2015	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911021	Returned to Compliance	01-OCT-2014	31-DEC-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911022	Returned to Compliance	01-OCT-2014	31-DEC-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911020	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911019	Returned to Compliance	01-JUL-2014	30-SEP-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911017	Returned to Compliance	01-APR-2014	30-JUN-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911018	Returned to Compliance	01-APR-2014	30-JUN-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911016	Returned to Compliance	01-JAN-2014	31-MAR-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911015	Returned to Compliance	01-JAN-2014	31-MAR-2014	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911013	Returned to Compliance	01-OCT-2013	31-DEC-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911014	Returned to Compliance	01-OCT-2013	31-DEC-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911011	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911012	Returned to Compliance	01-JUL-2013	30-SEP-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911010	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911009	Returned to Compliance	01-APR-2013	30-JUN-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Radionuclides and Revised Rad Rule	Combined Uranium	9911007	Returned to Compliance	01-JAN-2013	31-MAR-2013	Yes
MCL	Maximum Contaminant Level Violation, Average	Arsenic Rule	Arsenic	9911008	Returned to Compliance	01-JAN-2013	31-MAR-2013	Yes

1 - 50 of 97

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
9911015	811007	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	811009	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	811010	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	811013	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	811014	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	811015	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	811018	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	911016	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	911017	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	911021	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	911022	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	911023	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	911024	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	911025	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	911026	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1011027	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1011028	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1011029	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1011030	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1011031	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1011032	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1011033	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1011034	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1111035	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1111036	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1111037	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1111038	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1111039	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1111040	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1111041	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1111042	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1211043	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1211044	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1211045	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1211046	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1211047	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1211048	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	1211049	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	1211050	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	9711003	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	9911005	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	9911006	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	9911007	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	9911008	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	9911009	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	9911010	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	9911011	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	9911012	SOX	State Compliance achieved	22-AUG-2019	State	-
9911014	9911013	SOX	State Compliance achieved	22-AUG-2019	State	-
9911015	9911014	SOX	State Compliance achieved	22-AUG-2019	State	-

1 - 50 of 97

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
YOSEMITE HIGH SCHOOL 03 - INACTIVE	17761	Yes	Well	Ground water	Other	Inactive
YOSEMITE HIGH SCHOOL 02 - RAW	CA2010007011	Yes	Well	Ground water	Permanent	Inactive
FOREST RIDGE WELL 7	64646	Yes	Well	Ground water	Permanent	Active
FOREST RIDGE WELL 6	64645	Yes	Well	Ground water	Permanent	Active
FOREST RIDGE WELL 5	64644	Yes	Well	Ground water	Permanent	Active
QUAIL MEADOWS WELL 4	57790	Yes	Well	Ground water	Permanent	Active
QUAIL MEADOWS WELL 3	57789	Yes	Well	Ground water	Permanent	Active
QUAIL MEADOWS WELL 2	57788	Yes	Well	Ground water	Permanent	Active
JUNCTION WELL 01	17731	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 01A - RAW	17711	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 04	14939	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 08	14938	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 03	14929	Yes	Well	Ground water	Permanent	Active
DITTON WELL 03 (FOREST RIDGE)	14928	Yes	Well	Ground water	Permanent	Active
DITTON WELL 02 (FOREST RIDGE)	14927	Yes	Well	Ground water	Permanent	Active
DITTON WELL 01 (FOREST RIDGE)	14926	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 07	14923	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 09	14894	Yes	Well	Ground water	Permanent	Active
DITTON WELL 04 (FOREST RIDGE)	14883	Yes	Well	Ground water	Permanent	Active
JUNCTION WELL 02 - RAW	14882	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 05	14881	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 06	14880	Yes	Well	Ground water	Permanent	Active
SIERRA LAKES WELL 02 - INACTIVE	CA2010007008	Yes	Well	Ground water	Other	Inactive
HIGHLAND VIEW 01 - INACTIVE	23734	Yes	Well	Ground water	Other	Inactive
PIERCE LAKE WELL 01 - INACTIVE	23729	Yes	Well	Ground water	Other	Inactive
SIERRA LAKES WELL 02 - DESTROYED	23726	Yes	Well	Ground water	Other	Inactive
HIGHLAND VIEW 02 - INACTIVE	23717	Yes	Well	Ground water	Other	Inactive
YOSEMITE HIGH SCHOOL 02 -INACTIVE	17770	Yes	Well	Ground water	Other	Inactive
DISTRIBUTION SYSTEM	28710	No	Distribution System/Zone	-	-	Active
FR WTP FE, MN AND TDS RAW	66130	No	Sampling Station	-	-	Active
SL WTP AIM RAW AND TREATED URANIUM	66131	No	Sampling Station	-	-	Active
COURTNEY TANKS	65168	No	Storage	-	-	Active
SIERRA LAKES 2-352K TANKS	66136	No	Storage	-	-	Active
420 RESERVOIR TANK	66137	No	Storage	-	-	Active
JUNCTION TANK 437K	67808	No	Storage	-	-	Active
JUNCTION WELL 01 & 02 - TRT CL	2679	No	Treatment Plant	-	-	Active
SL WTP AIM - TREATED	5830	No	Treatment Plant	-	-	Active
QM BLEND 230K TANK - TRT CL	58319	No	Treatment Plant	-	-	Active
FR WTP FE AND MN TREATED	5833	No	Treatment Plant	-	-	Active
SL WTP URANIUM RAW	66121	No	Treatment Plant	-	-	Active
FR WTP TDS 219K BLEND TANK TREATED	66122	No	Treatment Plant	-	-	Active
CHLORINE INJECTION_TRT CL	67519	No	Treatment Plant	-	-	Active
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	No	Treatment Plant	-	-	Inactive
SIERRA LAKES WELL 01A - TRT CL	54794	No	Treatment Plant	-	-	Inactive
YHS WELL 02 - TRT CL	54796	No	Treatment Plant	-	-	Inactive
YHS WELL 03 - TRT CL	54797	No	Treatment Plant	-	-	Inactive
JUNCTION WELL 01 - TRT CL INAC	54798	No	Treatment Plant	-	-	Inactive
SL PLNT & WELLS BLND-J WEST RD INAC	5667	No	Treatment Plant	-	-	Inactive
QUAIL MEADOWS WELL 2-TRT CL	57791	No	Treatment Plant	-	-	Inactive
QUAIL MEADOWS WELL3-TRT CL	57792	No	Treatment Plant	-	-	Inactive

1 - 50 of 55

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
JUNCTION WELL 01 & 02 - TRT CL	2679	Hypochlorination, Post	Disinfection
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	Filtration, Greensand	Manganese removal
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	Filtration, Greensand	Iron removal
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	Permanganate	Iron removal
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	Hypochlorination, Pre	Manganese removal
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	Hypochlorination, Pre	Iron removal
SIERRA LAKES WELL 04 - TRTMENT INACTIVE	2784	Aeration, Slat Tray	Iron removal
YHS WELL 03 - TRT CL	54797	Hypochlorination, Post	Disinfection
JUNCTION WELL 01 - TRT CL INAC	54798	Hypochlorination, Post	Disinfection
SL PLNT & WELLS BLND-J WEST RD INAC	5667	Filtration, Pressure Sand	Radionuclides removal
SL WTP AIM - TREATED	5830	Coagulation	Inorganics removal
SL WTP AIM - TREATED	5830	Filtration, Greensand	Iron removal
SL WTP AIM - TREATED	5830	Filtration, Greensand	Inorganics removal
QM BLEND 230K TANK - TRT CL	58319	Hypochlorination, Post	Disinfection
FR WTP FE AND MN TREATED	5833	Filtration, Greensand	Iron removal
FR WTP FE AND MN TREATED	5833	Hypochlorination, Pre	Disinfection
FR WTP FE AND MN TREATED	5833	Filtration, Greensand	Manganese removal
SL WTP URANIUM RAW	66121	Ion Exchange	Radionuclides removal
FR WTP TDS 219K BLEND TANK TREATED	66122	Rapid Mix	Inorganics removal
CHLORINE INJECTION_TRT CL	67519	Hypochlorination, Post	Disinfection

1 - 20 of 20

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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