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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA2310007
PWS NameNORTH GUALALA WATER COMPANY
PWS TypeCommunity water system
Owner TypePrivate
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served2593
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
MRMonitoring, RegularNitrate RuleNitrate1103005Returned to Compliance01-JAN-201931-DEC-2019No
OtherVariance/Exemption/Other ComplianceMiscellaneous Other Rules - 1103004Returned to Compliance01-APR-201130-JUN-2011No
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule903003Returned to Compliance01-AUG-200931-AUG-2009Yes
TTTreatment Technique (SWTR and GWR)Surface Water Treatment RuleSurface Water Treatment Rule803002Returned to Compliance01-JUL-200831-JUL-2008Yes
OtherVariance/Exemption/Other ComplianceMiscellaneous Other Rules - 703001Returned to Compliance01-OCT-200731-DEC-2007No
OtherNotification, PublicMiscellaneous Other Rules - 8010073Known30-JAN-198029-FEB-1980No
  • 1 - 6 of 6

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
11030101103005SOXState Compliance achieved11-MAY-2020State -
11030081103004SOXState Compliance achieved07-MAR-2018State -
1103007803002SOXState Compliance achieved07-JUL-2016State -
1103007703001SOXState Compliance achieved07-JUL-2016State -
1103007903003SOXState Compliance achieved07-JUL-2016State -
  • 1 - 5 of 5

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
FISH ROCK INTAKE - INACTIVE29133YesIntakeSurface waterOtherInactive
WELL 0512290YesWell Ground waterPermanentActive
WELL 0412270YesWell Ground waterPermanentActive
WELL 07 (PENDING)63039YesWell Ground waterOtherInactive
WELL 06 (PENDING)24047YesWell Ground waterOtherInactive
ANCHOR BAY WELL - PENDING24042YesWell Ground waterOtherInactive
NORTH FORK WELL 0221868YesWell Ground waterOtherInactive
WELL 03 - INACTIVE21866YesWell Ground waterOtherInactive
ROBINSON GULCH INTAKE29135YesIntakeSurface waterPermanentActive
BIG GULCH INTAKE29131YesIntakeSurface waterPermanentActive
NORTH FORK INTAKE - INACTIVE29134YesIntakeSurface waterOtherInactive
DISTRIBUTION SYSTEM29132NoDistribution System/Zone - - Active
TREATMENT PLANT-BIG GULCH/ROBINSON GULCH1693NoTreatment Plant - - Active
TREATMENT PLANT - WELLS 04 & 05-TREATED5874NoTreatment Plant - - Active
TREATMENT PLANT - WELL 03-TREATD-INACT7177NoTreatment Plant - - Active
  • 1 - 15 of 15

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TREATMENT PLANT-BIG GULCH/ROBINSON GULCH1693Filtration, Rapid SandParticulate removal
TREATMENT PLANT-BIG GULCH/ROBINSON GULCH1693Filtration, Pressure SandParticulate removal
TREATMENT PLANT-BIG GULCH/ROBINSON GULCH1693FlocculationParticulate removal
TREATMENT PLANT-BIG GULCH/ROBINSON GULCH1693CoagulationParticulate removal
TREATMENT PLANT-BIG GULCH/ROBINSON GULCH1693Hypochlorination, PreDisinfection
TREATMENT PLANT - WELLS 04 & 05-TREATED5874Hypochlorination, PostDisinfection
TREATMENT PLANT - WELL 03-TREATD-INACT7177Filtration, GreensandIron removal
TREATMENT PLANT - WELL 03-TREATD-INACT7177PermanganateIron removal
TREATMENT PLANT - WELL 03-TREATD-INACT7177Hypochlorination, PostDisinfection
  • 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.