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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA5510009
PWS NameGROVELAND COMMUNITY SERV DIST
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served3400
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
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)611012Known01-APR-202530-JUN-2025Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)611011Known01-JAN-202531-MAR-2025Yes
RPTLSL ReportingLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS611009Open17-OCT-2024 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS611010Open17-OCT-2024 - Yes
MRMonitoring, RegularNitrate RuleNitrate611008Returned to Compliance01-JAN-202131-DEC-2021No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM611006Returned to Compliance01-JUL-200630-SEP-2006No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)611007Returned to Compliance01-JUL-200630-SEP-2006No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM611004Returned to Compliance01-APR-200630-JUN-2006No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)611005Returned to Compliance01-APR-200630-JUN-2006No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM511002Returned to Compliance01-APR-200530-JUN-2005No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)511003Returned to Compliance01-APR-200530-JUN-2005No
  • 1 - 11 of 11

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
9411006611012SFLState Administrative/Compliance Order without penalty issued17-JUN-2025State1Q 2025 HAA5 MCL
9411006611011SFLState Administrative/Compliance Order without penalty issued17-JUN-2025State1Q 2025 HAA5 MCL
9411005611008SOXState Compliance achieved03-MAY-2022State -
911004611006SOXState Compliance achieved20-DEC-2005StateEPA NOV FOR DBP'S
911004611007SOXState Compliance achieved20-DEC-2005StateEPA NOV FOR DBP'S
911004611005SOXState Compliance achieved20-DEC-2005StateEPA NOV FOR DBP'S
911004511003SOXState Compliance achieved20-DEC-2005StateEPA NOV FOR DBP'S
911004511002SOXState Compliance achieved20-DEC-2005StateEPA NOV FOR DBP'S
911004611004SOXState Compliance achieved20-DEC-2005StateEPA NOV FOR DBP'S
  • 1 - 9 of 9

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
BIG CREEK - RAW33969YesIntakeSurface waterPermanentActive
SECOND GARROTTE - RAW33972YesIntakeSurface waterPermanentActive
PINE MOUNTAIN LAKE - RAW33971YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM33970NoDistribution System/Zone - - Active
SECOND GARROTTE - TREATED4080NoTreatment Plant - - Active
BIG CREEK - TREATED4136NoTreatment Plant - - Active
PINE MOUNTAIN LAKE - TREATED6836NoTreatment Plant - - Active
  • 1 - 7 of 7

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
SECOND GARROTTE - TREATED40804-Log Treatment of VirusesDisinfection
SECOND GARROTTE - TREATED4080Ultraviolet RadiationDisinfection
SECOND GARROTTE - TREATED4080pH Adjustment, PostCorrosion control
SECOND GARROTTE - TREATED4080Filtration, UltrafiltrationParticulate removal
BIG CREEK - TREATED41364-Log Treatment of VirusesDisinfection
BIG CREEK - TREATED4136Ultraviolet RadiationDisinfection
BIG CREEK - TREATED4136pH Adjustment, PostCorrosion control
PINE MOUNTAIN LAKE - TREATED68364-Log Treatment of VirusesDisinfection
PINE MOUNTAIN LAKE - TREATED6836Filtration, UltrafiltrationParticulate removal
  • 1 - 9 of 9
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.