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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA4000650
PWS NameMESA DUNES MOBILE HOME ESTATES
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served600
County ServedSan Luis Obispo

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
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule6Returned to Compliance01-FEB-202128-FEB-2021No
MRMonitoring, Routine (IDSE)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM4Returned to Compliance01-JAN-201931-DEC-2019No
MRMonitoring, Routine (IDSE)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)5Returned to Compliance01-JAN-201931-DEC-2019No
MRMonitoring, Routine (IDSE)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM2Returned to Compliance01-JAN-201831-DEC-2018No
MRMonitoring, Routine (IDSE)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)3Returned to Compliance01-JAN-201831-DEC-2018No
MRMonitoring, Routine Major (TCR)Total Coliform RuleColiform (TCR)1Returned to Compliance01-APR-201430-APR-2014No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule95V0001Returned to Compliance01-JUL-199331-DEC-2003No
MRMonitoring, RegularRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U8235157Known01-OCT-198130-SEP-1982No
MRMonitoring, RegularRadionuclides and Revised Rad RuleGross Alpha, Excl. Radon and U8111888Known30-OCT-198029-OCT-1981No
  • 1 - 9 of 9

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
76SFLState Administrative/Compliance Order without penalty issued30-MAR-2021State04_06_21C_007_4000650_3A TCR M&R February 2021
54SFLState Administrative/Compliance Order without penalty issued15-JAN-2020State04_06_20C_002_4000650_30 Stage-2 DBP M&R Failure to Collect Annual TTHM, HAA5
55SFLState Administrative/Compliance Order without penalty issued15-JAN-2020State04_06_20C_002_4000650_30 Stage-2 DBP M&R Failure to Collect Annual TTHM, HAA5
32SFLState Administrative/Compliance Order without penalty issued22-FEB-2019State04_06_19C_010_4000650_30 Stage-2 DBP M&R
33SFLState Administrative/Compliance Order without penalty issued22-FEB-2019State04_06_19C_010_4000650_30 Stage-2 DBP M&R
11SFLState Administrative/Compliance Order without penalty issued17-JUN-2014State04-06-14C-008
039999995V0001EOXFederal Compliance achieved31-DEC-2003ODSWeb -
  • 1 - 7 of 7

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 01 - ABANDONED8147YesWell Ground waterOtherInactive
WELL 0412046YesWell Ground waterPermanentActive
WELL 0212045YesWell Ground waterPermanentActive
WELL 0312044YesWell Ground waterPermanentActive
DISTRIBUTION SYSTEM31312NoDistribution System/Zone - - Active
CENTRAL CHLORINATION-WELLS 02,03,& 045709NoTreatment Plant - - Active
  • 1 - 6 of 6

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
CENTRAL CHLORINATION-WELLS 02,03,& 045709Hypochlorination, PostDisinfection
  • 1 - 1 of 1

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.