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Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCA1210012
PWS NameRIO DELL, CITY OF
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served3300
County ServedHumboldt

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, Monthly (TCR)Total Coliform RuleColiform (TCR)9701006Returned to Compliance01-OCT-199631-OCT-1996Yes
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9401005Returned to Compliance01-AUG-199430-SEP-1994Yes
MRInitial Tap Sampling for Pb and CuLead and Copper RuleLead and Copper Rule94V0001Returned to Compliance30-JUN-199331-DEC-2003No
MCLMaximum Contaminant Level Violation, Monthly (TCR)Total Coliform RuleColiform (TCR)9301004Returned to Compliance01-NOV-199231-JAN-1993Yes
  • 1 - 4 of 4

Enforcement Actions


Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
039999894V0001EOXFederal Compliance achieved31-DEC-2003ODSWeb -
97010059701006SOXState Compliance achieved08-NOV-1996StateENF_NO:9701004; COMPLETED PUBLIC NOTIFICATION
95010039401005SOXState Compliance achieved01-OCT-1994State -
95010039301004SOXState Compliance achieved01-OCT-1994State -
  • 1 - 4 of 4

PWS Facilities


All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
EEL RIVER - RAW26358YesIntakeSurface waterPermanentActive
WELL 03 - RAW21117YesWell Ground waterPermanentActive
WELL 01 - RAW21102YesWell Ground waterPermanentActive
WELL 03 - RAW XCLDCA1210012004YesWell Ground waterOtherInactive
WELL 01 - RAW XCLDCA1210012002YesWell Ground waterOtherInactive
WELL 02 - RAW XCLD21103YesWell Ground waterOtherInactive
STANDBY WELLS - COMBINED - RAW21101YesWell Ground waterOtherInactive
SPRING - ABANDONED26359YesSpringGround waterOtherInactive
DISTRIBUTION SYSTEM26357NoDistribution System/Zone - - Active
EEL RIVER - TREATED1220NoTreatment Plant - - Active
WELL 01 & 03-TREATED67922NoTreatment Plant - - Active
WELL 02 - TREATED XCLD6669NoTreatment Plant - - Inactive
WELL 01 - TREATED XCLD6670NoTreatment Plant - - Inactive
WELL 03 - TREATED XCLD6704NoTreatment Plant - - Inactive
  • 1 - 14 of 14

PWS Treatment Processes


Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
EEL RIVER - TREATED1220Filtration, Rapid SandParticulate removal
EEL RIVER - TREATED1220CoagulationParticulate removal
EEL RIVER - TREATED1220Hypochlorination, PostDisinfection
WELL 01 & 03-TREATED67922Hypochlorination, PreDisinfection
WELL 01 & 03-TREATED67922Filtration, GreensandIron removal
  • 1 - 5 of 5

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.