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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCO0107152
PWS NameBOULDER CITY OF
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served166080
County ServedBoulder

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, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule213Returned to Compliance01-OCT-202431-OCT-2024No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule194Returned to Compliance01-JUN-202230-JUN-2022No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)193Returned to Compliance01-JUL-201730-SEP-2017Yes
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)192Returned to Compliance01-APR-201730-JUN-2017Yes
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule189Returned to Compliance01-JAN-201731-JAN-2017No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule190Returned to Compliance01-DEC-201631-DEC-2016No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule191Returned to Compliance01-OCT-201631-OCT-2016No
TTSingle Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule109Returned to Compliance01-JAN-201031-JAN-2010Yes
  • 1 - 8 of 8

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
249213SOXState Compliance achieved04-DEC-2024StateSOX MOR submitted in accordance with the rule FCL 1/28/2025
234194SIFState Public Notification received24-MAR-2023StatePN met with CCR. slh 3/31/2023
228192SOXState Compliance achieved05-DEC-2017State -
228193SOXState Compliance achieved05-DEC-2017State -
221191SIFState Public Notification received28-JUN-2017State -
221189SIFState Public Notification received28-JUN-2017State -
221190SIFState Public Notification received28-JUN-2017State -
213109SOXState Compliance achieved31-JUL-2010Stateimplicit RTC due to 6 months compliance, sv 9/7/10
  • 1 - 8 of 8

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
BARKER RESERVOIR INTAKE68YesIntakeSurface waterPermanentActive
BOULDER RESERVOIR BASIN INTAKE71YesIntakeSurface waterPermanentActive
BOULDER FEEDER CANEL INTAKE70YesIntakeSurface waterPermanentActive
LAKEWOOD RESERVOIR INTAKE69YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM6473NoDistribution System/Zone - - Active
CHERRYVALE PUMP STATION16458NoPump Facility - - Inactive
IRIS PUMP STATION16459NoPump Facility - - Inactive
COMBINED RAW SOURCE FOR 00114069NoSampling Station - - Active
COMBINED RAW SOURCE FOR 00214112NoSampling Station - - Active
MAXWELL STORAGE RESERVOIR IN DIST SYS14239NoStorage - - Active
BOOTON STORAGE RESERVOIR IN DIST SYS14240NoStorage - - Active
GUNBARREL STORAGE RESERVOIR14241NoStorage - - Active
KOHLER STORAGE RESERVOIR IN DIST SYS14546NoStorage - - Active
DEVILS THUMB STORAGE RES IN DIST SYS14547NoStorage - - Active
CHAUTAUQUA STORAGE RESERVOIR IN DIST SYS14548NoStorage - - Active
STORAGE TANK22755NoStorage - - Active
CLEARWELL NO 126148NoStorage - - Active
CLEARWELL NO 226149NoStorage - - Active
BETASSO WTP3417NoTreatment Plant - - Active
63RD ST WTP3418NoTreatment Plant - - Active
  • 1 - 20 of 20

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
BETASSO WTP3417InnovativeCorrosion control
BETASSO WTP3417InnovativeParticulate removal
BETASSO WTP3417CoagulationParticulate removal
BETASSO WTP3417FlocculationParticulate removal
BETASSO WTP3417SedimentationParticulate removal
BETASSO WTP3417InnovativeParticulate removal
BETASSO WTP3417Hypochlorination, PostDisinfection
BETASSO WTP3417Filtration, Rapid SandParticulate removal
BETASSO WTP3417FluoridationOther
BETASSO WTP3417InnovativeDisinfection
63RD ST WTP3418InnovativeCorrosion control
63RD ST WTP3418InnovativeParticulate removal
63RD ST WTP3418CoagulationParticulate removal
63RD ST WTP3418FlocculationRadionuclides removal
63RD ST WTP3418InnovativeParticulate removal
63RD ST WTP3418Hypochlorination, PostDisinfection
63RD ST WTP3418Filtration, Rapid SandParticulate removal
63RD ST WTP3418FluoridationOther
63RD ST WTP3418InnovativeDisinfection
  • 1 - 19 of 19
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.