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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA5010029
PWS NameCITY OF MODESTO - DEL RIO
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served1327
County ServedStanislaus

Note


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.

PWS Violation


Violations

Violation Category CodeViolation Type DescriptionRule NameContaminant NameViolation IDCompliance Status DescriptionCompliance Period Begin DateCompliance Period End DateIs Health Based Ind
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)1110004Returned to Compliance01-JUL-201130-SEP-2011Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)610003Returned to Compliance01-JAN-200631-JAN-2006Yes
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)110002Returned to Compliance01-APR-200130-APR-2001No
MRMonitoring, Routine Minor (TCR)Total Coliform RuleColiform (TCR)9810001Returned to Compliance01-AUG-199831-AUG-1998No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule95V0001Returned to Compliance01-JUL-199331-DEC-2003No
  • 1 - 5 of 5

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
12100151110004SOXState Compliance achieved04-AUG-2011StateENF_NO:03-10-11C-004; RETURNED TO COMPLIANCE
710011610003SOXState Compliance achieved01-MAR-2006StateENF_NO:03-10-06C-004; COMPLIED WITH TCR FAILURE REQ INVESTIGATE, PUBLIC NOTICE
039999995V0001EOXFederal Compliance achieved31-DEC-2003ODSWeb -
9910008110002SOXState Compliance achieved30-MAY-2001StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
99100099810001SOXState Compliance achieved30-SEP-1998StateThis TCR violation has been closed with this SOX enforcement record due to rTCR implementation on 4/1/2016.
  • 1 - 5 of 5

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL NO. 70 - INACTIVE66341YesWell Ground waterOtherInactive
WELL NO. 68 - RAW67474YesWell Ground waterPermanentActive
WELL 289 - KRISTINA17502YesWell Ground waterPermanentActive
WELL 271 - HILLCREST ESTATES17499YesWell Ground waterPermanentActive
WELL 282 - DEL RIO14051YesWell Ground waterPermanentActive
DISTRIBUTION SYSTEM33404NoDistribution System/Zone - - Active
WELL NO. 68 - TREATED67475NoTreatment Plant - - Active
WELL 282 - DEL RIO - XCLD69596NoTreatment Plant - - Active
WELL 282 - DEL RIO - TREATED2130NoTreatment Plant - - Inactive
WELL 271 - HILLCREST ESTATES - ABANDONED24NoTreatment Plant - - Inactive
WELL 289 - KRISTINA - ABANDONED25NoTreatment Plant - - Inactive
WELL 282 - DEL RIO - INACTIVE, TREATED6648NoTreatment Plant - - Inactive
WELL NO. 70 - TREATED - INACTIVE67473NoTreatment Plant - - Inactive
  • 1 - 13 of 13

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL NO. 68 - TREATED67475Hypochlorination, PreDisinfection
WELL 282 - DEL RIO - XCLD69596Hypochlorination, PostDisinfection
  • 1 - 2 of 2

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.