Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CA3910001
PWS Name	CALIFORNIA WATER SERVICE - STOCKTON
PWS Type	Community water system
Owner Type	Private
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	176266
County Served	San Joaquin

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

No violation(s) found. EPA has no record of violation(s) reported by the primacy agency for this water system.

Enforcement Actions

No enforcement action(s) found. EPA has no record of enforcement action(s) reported by the primacy agency for this water system.

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
STOCKTON EAST PLANT - RAW - ABANDONED	31245	Yes	Consecutive Connection	Surface water	Other	Inactive
WELL 85-01 - RAW PRE-BLEND	8175	Yes	Well	Ground water	Permanent	Active
WELL 87-01	62180	Yes	Well	Ground water	Permanent	Active
WELL 21-02	57077	Yes	Well	Ground water	Permanent	Active
WELL 70-01 - RAW PRE-BLEND	24486	Yes	Well	Ground water	Permanent	Active
WELL 16-01	13714	Yes	Well	Ground water	Permanent	Active
WELL 07-02	13713	Yes	Well	Ground water	Permanent	Active
WELL 35-01	13676	Yes	Well	Ground water	Permanent	Active
WELL 18-01 - RAW	13640	Yes	Well	Ground water	Permanent	Active
WELL 66-01	13619	Yes	Well	Ground water	Permanent	Active
WELL 77-01	13618	Yes	Well	Ground water	Permanent	Active
WELL 76-01 - RAW	13617	Yes	Well	Ground water	Permanent	Active
WELL 75-01 - RAW	13616	Yes	Well	Ground water	Permanent	Active
WELL 71-01	13615	Yes	Well	Ground water	Permanent	Active
WELL 69-02 - RAW PRE-BLEND	13614	Yes	Well	Ground water	Permanent	Active
WELL 69-01 - RAW PRE-BLEND	13613	Yes	Well	Ground water	Permanent	Active
WELL 68-01	13612	Yes	Well	Ground water	Permanent	Active
WELL 66-02	13610	Yes	Well	Ground water	Permanent	Active
WELL 63-01	13608	Yes	Well	Ground water	Permanent	Active
WELL 62-01 - RAW PRE-BLEND	13607	Yes	Well	Ground water	Permanent	Active
WELL 61-01 - RAW	13606	Yes	Well	Ground water	Permanent	Active
WELL 60-01	13605	Yes	Well	Ground water	Permanent	Active
WELL 59-01	13604	Yes	Well	Ground water	Permanent	Active
WELL 52-01 - RAW PRE-BLEND	13603	Yes	Well	Ground water	Permanent	Active
WELL 36-01 - RAW	13602	Yes	Well	Ground water	Permanent	Active
WELL 79-01	13592	Yes	Well	Ground water	Permanent	Active
WELL 31-01 - INACTIVE	CA3910001026	Yes	Well	Ground water	Other	Inactive
WELL 10-01 - INACTIVE	CA3910001010	Yes	Well	Ground water	Other	Inactive
WELL 01-16 - ABANDONED	8200	Yes	Well	Ground water	Other	Inactive
WELL 49-01 - DESTROYED	24522	Yes	Well	Ground water	Other	Inactive
WELL 47-01 - INACTIVE	24521	Yes	Well	Ground water	Other	Inactive
WELL 46-01 - INACTIVE	24520	Yes	Well	Ground water	Other	Inactive
WELL 44-01 - INACTIVE	24519	Yes	Well	Ground water	Other	Inactive
WELL 43-02 - DESTROYED	24518	Yes	Well	Ground water	Other	Inactive
WELL 39-01 - DESTROYED	24517	Yes	Well	Ground water	Other	Inactive
WELL 04-02 - INACTIVE	24516	Yes	Well	Ground water	Other	Inactive
WELL 51-01 - INACTIVE	24494	Yes	Well	Ground water	Other	Inactive
WELL 78-01 - INACTIVE	21986	Yes	Well	Ground water	Other	Inactive
WELL 10-01 - DESTROYED	21973	Yes	Well	Ground water	Other	Inactive
WELL 08-01 - DESTROYED	21969	Yes	Well	Ground water	Other	Inactive
WELL 01-25 - DESTROYED	21965	Yes	Well	Ground water	Other	Inactive
WELL 01-23 - DESTROYED	21964	Yes	Well	Ground water	Other	Inactive
WELL 27-01 - DESTROYED	21914	Yes	Well	Ground water	Other	Inactive
WELL 56-01 - DESTROYED	21911	Yes	Well	Ground water	Other	Inactive
WELL 31-01 - DESTROYED	21910	Yes	Well	Ground water	Other	Inactive
WELL 26-01 - DESTROYED	21906	Yes	Well	Ground water	Other	Inactive
WELL 38-01 - DESTROYED	21905	Yes	Well	Ground water	Other	Inactive
WELL 43-01 - DESTROYED	21898	Yes	Well	Ground water	Other	Inactive
WELL 37-01 - DESTROYED	21894	Yes	Well	Ground water	Other	Inactive
WELL 17-01 - DESTROYED	21891	Yes	Well	Ground water	Other	Inactive

1 - 50 of 165

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 44-01 - TREATED - INACTIVE	1731	Hypochlorination, Pre	Disinfection
WELL 69-01 - TREATED - INACTIVE	1732	Hypochlorination, Pre	Disinfection
WELL 69-02 - TREATED - INACTIVE	1733	Hypochlorination, Pre	Disinfection
WELL 71-01 - TREATED	1735	Hypochlorination, Pre	Disinfection
WELL 75-01 - TREATED	1736	Hypochlorination, Pre	Disinfection
WELL 67-01 - TREATED - INACTIVE	1739	Hypochlorination, Pre	Disinfection
WELL 77-01 - TREATED XCLD	1740	Hypochlorination, Pre	Disinfection
WELL 66-02 - TREATED	1741	Hypochlorination, Pre	Disinfection
WELL 79-01 - TREATED XCLD	1743	Hypochlorination, Pre	Disinfection
WELL 76-01 - TREATED	1751	Hypochlorination, Pre	Disinfection
WELL 46-01 - TREATED - INACTIVE	1754	Hypochlorination, Pre	Disinfection
WELL 47-01 - TREATED - INACTIVE	1755	Hypochlorination, Pre	Disinfection
WELL 49-01 - TREATED - DESTROYED	1756	Hypochlorination, Pre	Disinfection
WELL 51-01 - TREATED - INACTIVE	1758	Hypochlorination, Pre	Disinfection
WELL 52-01 - TREATED - INACTIVE	1759	Hypochlorination, Pre	Disinfection
WELL 68-01 - TREATED	1761	Hypochlorination, Pre	Disinfection
WELL 59-01 - TREATED	1766	Hypochlorination, Pre	Disinfection
WELL 60-01 - TREATED	1767	Hypochlorination, Pre	Disinfection
WELL 61-01 - TREATED	1768	Hypochlorination, Pre	Disinfection
WELL 62-01 - TREATED - INACTIVE	1770	Hypochlorination, Pre	Disinfection
WELL 63-01 - TREATED	1771	Hypochlorination, Pre	Disinfection
WELL 66-01 - TREATED	1772	Hypochlorination, Pre	Disinfection
WELL 43-02 - TREATED - DESTROYED	1797	Hypochlorination, Pre	Disinfection
WELL 16-01 - TREATED	1865	Hypochlorination, Pre	Disinfection
WELL 18-01 - TREATED	1867	Hypochlorination, Pre	Disinfection
WELL 21-01 - TREATED - STANDBY	1870	Hypochlorination, Pre	Disinfection
WELL 35-01 - TREATED	1877	Hypochlorination, Pre	Disinfection
WELL 36-01 - TREATED	1878	Hypochlorination, Pre	Disinfection
WELL 39-01 - TREATED - INACTIVE	1881	Hypochlorination, Pre	Disinfection
WELL 04-02 - TREATED - INACTIVE	1894	Hypochlorination, Pre	Disinfection
WELL 07-02 TREATED	1907	Hypochlorination, Pre	Disinfection
ARSENIC BLENDING STATION EFFLUENT	5691	Hypochlorination, Pre	Manganese removal
WELL 21-02 TREATED	62182	Hypochlorination, Post	Disinfection
WELL 87-01 TREATED	64173	Hypochlorination, Post	Disinfection
WELL 70-01 - TREATED - INACTIVE	7160	Hypochlorination, Pre	Disinfection

1 - 35 of 35

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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