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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA5510023
PWS NameSONORA MEADOWS MUTUAL WTR CO
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceSurface water purchased
Primacy TypeState
Is Wholesaler?No
Population Served1123
County ServedTuolumne

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, Lab Certification/Method Error (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule9611008Returned to Compliance01-APR-202531-MAY-2025No
RPTLSL ReportingLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS9611007Open17-OCT-2024 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS9611006Open17-OCT-2024 - Yes
MRMonitoring, RegularNitrate RuleNitrate9611005Returned to Compliance01-JAN-202131-DEC-2021No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)9611003Returned to Compliance01-JAN-201531-MAR-2015Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM511004Returned to Compliance01-JAN-200531-MAR-2005No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)511005Returned to Compliance01-JAN-200531-MAR-2005No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule9611002Returned to Compliance02-JAN-1996 - No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule95V0001Returned to Compliance01-JUL-1993 - No
  • 1 - 9 of 9

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
94110079611008SOXState Compliance achieved15-SEP-2025State -
94110059611005SOXState Compliance achieved03-MAY-2022State -
94110039611003SOXState Compliance achieved01-MAR-2018State03-11-15R-008 HAA5 MCL c.o.
1011007511004SOXState Compliance achieved01-APR-2006StateRTC
1011007511005SOXState Compliance achieved01-APR-2006StateRTC
#41100495V0001EOXFederal Compliance achieved08-JUL-2004ODSWebPer SWRCB LPA Liaison Unit request to close out Federal type 51 violation: LCR initial tap sampling completed per state enforcement action 411003 and 411004
4110049611002SOXState Compliance achieved08-JUL-2004StateENF_NO:03-11-04C-001;
  • 1 - 7 of 7

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
CRYSTAL FALLS - PURCHASED TRT TANK 134004YesConsecutive ConnectionSurface waterPermanentActive
WELL NO. 375357YesWell Ground waterPermanentActive
WELL NO. 267964YesWell Ground waterPermanentActive
WELL NO. 167963YesWell Ground waterPermanentActive
CRYSTAL FALLS 01 - TREATED1YesConsecutive ConnectionSurface waterPermanentInactive
DISTRIBUTION SYSTEM34005NoDistribution System/Zone - - Active
TANK 268060NoStorage - - Active
TANK 368061NoStorage - - Active
TANK 468062NoStorage - - Active
TANK 568063NoStorage - - Active
WELLS 1 AND 2 - TRT CL67965NoTreatment Plant - - Active
WELL 3 TRT - CL75397NoTreatment Plant - - Active
  • 1 - 12 of 12

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELLS 1 AND 2 - TRT CL67965Hypochlorination, 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.