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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2310011
PWS NameLAYTONVILLE COUNTY WATER DISTRICT
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served1152
County ServedMendocino

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, AverageArsenic RuleArsenic903014Returned to Compliance01-JAN-200931-MAR-2009Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic999001Returned to Compliance01-OCT-200831-DEC-2008Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic899004Returned to Compliance01-JUL-200830-SEP-2008Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic803013Returned to Compliance01-APR-200830-JUN-2008Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic803011Returned to Compliance01-JAN-200831-MAR-2008Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic803012Returned to Compliance01-OCT-200731-DEC-2007Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic703010Returned to Compliance01-JUL-200730-SEP-2007Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic703009Returned to Compliance01-APR-200730-JUN-2007Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic703008Returned to Compliance01-JAN-200731-MAR-2007Yes
MRMonitoring, RegularNitrate RuleNitrate703004Returned to Compliance02-NOV-200602-NOV-2007No
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic703007Returned to Compliance01-OCT-200631-DEC-2006Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic603006Returned to Compliance01-JUL-200630-SEP-2006Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic603005Returned to Compliance01-APR-200630-JUN-2006Yes
MCLMaximum Contaminant Level Violation, AverageArsenic RuleArsenic603003Returned to Compliance01-JAN-200631-MAR-2006Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTTHM503001Returned to Compliance01-JAN-200531-DEC-2005No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)503002Returned to Compliance01-JAN-200531-DEC-2005No
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule95V0001Returned to Compliance01-JUL-199301-MAR-2000No
OtherNotification, PublicMiscellaneous Other Rules - 8907670Known01-APR-198930-APR-1989No
  • 1 - 18 of 18

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
903004703008SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004903014SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004899004SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004803013SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004603003SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004603005SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004603006SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004703007SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004999001SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004703009SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004703010SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004803011SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
903004803012SOXState Compliance achieved01-APR-2009StateNEW TREATMENT EFFECTIVE
803003703004SOXState Compliance achieved13-MAY-2008StateENF_NO:02-03-08C-013; COMPLIED WITH
1003006503002SOXState Compliance achieved13-SEP-2006State -
1003006503001SOXState Compliance achieved13-SEP-2006State -
00E000195V0001EOXFederal Compliance achieved01-MAR-2000ODSWeb -
  • 1 - 17 of 17

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL 02 - INACTIVE21851YesWell Ground waterOtherInactive
WELL 0112283YesWell Ground waterPermanentActive
WELL 0312282YesWell Ground waterPermanentActive
DISTRIBUTION SYSTEM29142NoDistribution System/Zone - - Active
BACKWASH RECOVERY TANK45667NoOther - - Active
TREATMENT PLANT EFFLUENT - TREATED1688NoTreatment Plant - - Active
TREATMENT PLANT - WELL 011689NoTreatment Plant - - Inactive
  • 1 - 7 of 7

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT EFFLUENT - TREATED1688Filtration, Pressure SandInorganics removal
TREATMENT PLANT EFFLUENT - TREATED1688CoagulationInorganics removal
TREATMENT PLANT EFFLUENT - TREATED1688Hypochlorination, PreIron removal
TREATMENT PLANT - WELL 011689CoagulationInorganics removal
TREATMENT PLANT - WELL 011689Filtration, GreensandManganese removal
TREATMENT PLANT - WELL 011689PermanganateTaste / odor control
TREATMENT PLANT - WELL 011689PermanganateIron removal
TREATMENT PLANT - WELL 011689Aeration, Packed TowerIron removal
TREATMENT PLANT - WELL 011689Gaseous Chlorination, PreDisinfection
  • 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.