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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2410012
PWS NameHILMAR COUNTY WATER DISTRICT
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served5504
County ServedMerced

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, Single SampleNitrate RuleNitrate811019Known01-NOV-202530-NOV-2025Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811018Known01-OCT-202531-OCT-2025Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811015Known01-JUL-202531-JUL-2025Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811014Known01-MAR-202531-MAR-2025Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811013Known01-FEB-202528-FEB-2025Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811012Known01-JAN-202531-JAN-2025Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811011Known01-DEC-202431-DEC-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811010Known01-JUL-202431-JUL-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811009Known01-MAY-202431-MAY-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811008Known01-APR-202430-APR-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811007Known01-MAR-202431-MAR-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811006Known01-FEB-202429-FEB-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811005Known01-JAN-202431-JAN-2024Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate811004Known01-JAN-202331-DEC-2023Yes
MRMonitoring, RegularNitrate RuleNitrate811003Returned to Compliance01-JAN-201931-MAR-2019No
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate8300221Known01-JUL-198331-JUL-1983Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate8210024Known01-AUG-198230-SEP-1982Yes
MCLMaximum Contaminant Level Violation, Single SampleNitrate RuleNitrate8110062Known01-JAN-198131-JAN-1981Yes
  • 1 - 18 of 18

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
9711010811004SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811005SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811006SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811007SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811008SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811009SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811010SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811011SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811012SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811013SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811014SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811015SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811018SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711010811019SFLState Administrative/Compliance Order without penalty issued02-OCT-2024StateNitrate MCL
9711009811003SOXState Compliance achieved25-JUN-2020State -
  • 1 - 15 of 15

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 04 (COX) - RAW - STANDBY24506YesWell Ground waterEmergencyActive
WELL 05 (NYMAN) - INACTIVE14773YesWell Ground waterPermanentInactive
WELL 07 (WOODY) RAW24164YesWell Ground waterPermanentActive
WELL 06 (JAKE) - RAW14757YesWell Ground waterPermanentActive
WELL 07 - PENDINGCA2410012011YesWell Ground waterOtherInactive
WELL 02 (TELL) - INACTIVE NO323653YesWell Ground waterOtherInactive
WELL 03 - DESTROYED - NO319827YesWell Ground waterOtherInactive
WELL 01 - DESTROYED19826YesWell Ground waterOtherInactive
DISTRIBUTION SYSTEM29198NoDistribution System/Zone - - Active
BLEND NEAR WELL FIELD BEFORE DIST SYSTEM29196NoSampling Station - - Active
DIST BLEND WELL 04 AT AMERICAN STATION29197NoSampling Station - - Inactive
WELL 06 (JAKE) - TRT CL GAS4130NoTreatment Plant - - Active
WELL 07 (WOODY)- TRT CL GAS66798NoTreatment Plant - - Active
WELL 04 - TRT CL GAS - STBY7269NoTreatment Plant - - Active
WELL 05 (NYMAN) - TREATED GAS CL2 INAC4131NoTreatment Plant - - Inactive
  • 1 - 15 of 15

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL 06 (JAKE) - TRT CL GAS4130Gaseous Chlorination, PostDisinfection
WELL 05 (NYMAN) - TREATED GAS CL2 INAC4131Gaseous Chlorination, PostDisinfection
WELL 07 (WOODY)- TRT CL GAS66798Gaseous Chlorination, PostDisinfection
WELL 04 - TRT CL GAS - STBY7269Gaseous Chlorination, PostDisinfection
  • 1 - 4 of 4
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.