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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDCO0125323
PWS NameGRAND COUNTY WATER NO 1
PWS TypeCommunity water system
Owner TypeLocal government
Primary SourceSurface water
Primacy TypeState
Is Wholesaler?No
Population Served5400
County ServedGrand

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
MRFollow-up Or Routine LCR Tap M/RLead and Copper RuleLead and Copper Rule3007639Returned to Compliance01-JUL-2026 - No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule3007636Returned to Compliance01-JUN-202630-JUN-2026No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule3007637Returned to Compliance01-JUN-202630-JUN-2026No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule3007633Returned to Compliance01-MAY-202631-MAY-2026No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule3007635Returned to Compliance01-MAY-202631-MAY-2026No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule3007632Returned to Compliance01-MAY-202631-MAY-2026No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule3007634Returned to Compliance01-MAY-202631-MAY-2026No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine3007638Returned to Compliance01-APR-202630-JUN-2026No
MRMonitoring, Source Water (LT2)Long Term 2 Enhanced Surface Water Treatment RuleE. COLI3007630Returned to Compliance01-FEB-202628-FEB-2026No
MRMonitoring, Source Water (LT2)Long Term 2 Enhanced Surface Water Treatment RuleE. COLI3007631Returned to Compliance01-FEB-202628-FEB-2026No
MRMonitoring, Source Water (LT2)Long Term 2 Enhanced Surface Water Treatment RuleE. COLI3007629Returned to Compliance01-DEC-202531-DEC-2025No
MRMonitoring, Source Water (LT2)Long Term 2 Enhanced Surface Water Treatment RuleE. COLI3007628Returned to Compliance01-DEC-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsThallium, Total3007613Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsBeryllium, Total3007612Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsBeryllium, Total3007623Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsAntimony, Total3007622Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsAntimony, Total3007611Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularArsenic RuleArsenic3007604Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsBarium3007605Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsBarium3007616Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsSelenium3007625Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsCadmium3007606Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsChromium3007607Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsChromium3007618Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsFluoride3007602Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsFluoride3007603Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsMercury3007619Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsMercury3007608Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsNickel3007609Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsNickel3007620Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularNitrate RuleNitrate3007626Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularNitrate RuleNitrate3007627Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsSelenium3007614Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsThallium, Total3007624Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularArsenic RuleArsenic3007615Known01-JAN-202531-DEC-2025No
MRMonitoring, RegularInorganic ChemicalsCadmium3007617Known01-JAN-202531-DEC-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)3007596Returned to Compliance01-OCT-202431-DEC-2024No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM3007595Returned to Compliance01-OCT-202431-DEC-2024No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule3007594Returned to Compliance01-OCT-2024 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule3007593Returned to Compliance01-JUL-2024 - No
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule3007592Returned to Compliance01-APR-202430-APR-2024Yes
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule3007589Returned to Compliance01-FEB-202429-FEB-2024No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule3007588Returned to Compliance01-FEB-202429-FEB-2024No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine3007590Returned to Compliance01-JAN-202431-MAR-2024No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule3007564Returned to Compliance01-NOV-202330-NOV-2023No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule3007562Returned to Compliance01-NOV-202330-NOV-2023No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule3007559Returned to Compliance01-OCT-202331-OCT-2023No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine3007560Returned to Compliance01-OCT-202331-DEC-2023No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule3007558Returned to Compliance01-OCT-2023 - No
MRMonitoring of Treatment (SWTR-Filter)Surface Water Treatment RuleSurface Water Treatment Rule3007561Returned to Compliance01-OCT-202331-OCT-2023No
  • 1 - 50 of 244

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
30317583007636SOXState Compliance achieved06-AUG-2026StateSOXing; the system monitored and reported for July 2026 in accordance with the Rule. MM 8/11/2026
30317583007637SOXState Compliance achieved06-AUG-2026StateSOXing; the system monitored and reported for July 2026 in accordance with the Rule. MM 8/11/2026
30317583007638SOXState Compliance achieved06-AUG-2026StateSOXing; the system monitored and reported for July 2026 in accordance with the Rule. MM 8/11/2026
30317573007639SOXState Compliance achieved17-JUL-2026StateSOXing; all required data received on 7/14/2026. MM 8/11/2026
30317593007635SOXState Compliance achieved09-JUL-2026StateSOXing; the system monitored and reported for June 2026 in accordance with the Rule. MM 8/11/2026
30317593007634SOXState Compliance achieved09-JUL-2026StateSOXing; the system monitored and reported for June 2026 in accordance with the Rule. MM 8/11/2026
30317593007633SOXState Compliance achieved09-JUL-2026StateSOXing; the system monitored and reported for June 2026 in accordance with the Rule. MM 8/11/2026
30317593007632SOXState Compliance achieved09-JUL-2026StateSOXing; the system monitored and reported for June 2026 in accordance with the Rule. MM 8/11/2026
30317483007612SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007613SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007614SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007615SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007616SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007617SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007618SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007619SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007620SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007622SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007623SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007624SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007625SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007626SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007627SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007628SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007629SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007611SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007609SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007608SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007607SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007606SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007605SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007604SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007602SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317483007603SIFState Public Notification received30-JUN-2026StatePN performed with 2026 CCR. MM 7/2/2026
30317373007630SOXState Compliance achieved17-APR-2026StateSOXing; "replacement sample" reported on 3/3/2026. MM 4/17/2026
30317373007631SOXState Compliance achieved17-APR-2026StateSOXing; "replacement sample" reported on 3/3/2026. MM 4/17/2026
30317013007558SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007588SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007589SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007596SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007593SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007594SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007595SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30317013007590SIFState Public Notification received27-JUN-2025StatePN performed with 2025 CCR. MM 6/27/2025
30316903007592SIFState Public Notification received14-JUN-2024State -
30316893007575SOXState Compliance achieved29-APR-2024Statecollected (4/10/2024) and reported (4/29/2024) next required sample. MM 5/7/2024
30316893007586SOXState Compliance achieved29-APR-2024Statecollected (4/10/2024) and reported (4/29/2024) next required sample. MM 5/7/2024
30316893007566SOXState Compliance achieved29-APR-2024Statecollected (4/10/2024) and reported (4/29/2024) next required sample. MM 5/7/2024
30316893007567SOXState Compliance achieved29-APR-2024Statecollected (4/10/2024) and reported (4/29/2024) next required sample. MM 5/7/2024
30316893007568SOXState Compliance achieved29-APR-2024Statecollected (4/10/2024) and reported (4/29/2024) next required sample. MM 5/7/2024
  • 1 - 50 of 243

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
BIG VASQUEZ CREEK282YesIntakeSurface waterPermanentActive
LITTLE VASQUEZ CREEK283YesIntakeSurface waterPermanentActive
DISTRIBUTION SYSTEM6785NoDistribution System/Zone - - Active
WOODSPUR NO1 STORAGE TANK12624NoStorage - - Active
WOODSPUR NO2 STORAGE TANK12625NoStorage - - Active
BIG MAC WTP CLEARWELL23479NoStorage - - Active
LITTLE MAC WTP CLEARWELL23480NoStorage - - Active
BIG MAC SWTP013885NoTreatment Plant - - Active
LITTLE MAC SWTP023886NoTreatment Plant - - Active
  • 1 - 9 of 9

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
BIG MAC SWTP013885Filtration, UltrafiltrationParticulate removal
BIG MAC SWTP013885CoagulationParticulate removal
BIG MAC SWTP013885InnovativeParticulate removal
BIG MAC SWTP013885MicroscreeningParticulate removal
BIG MAC SWTP013885Hypochlorination, PostDisinfection
BIG MAC SWTP013885InnovativeDisinfection
LITTLE MAC SWTP023886CoagulationParticulate removal
LITTLE MAC SWTP023886MicroscreeningParticulate removal
LITTLE MAC SWTP023886InnovativeDisinfection
LITTLE MAC SWTP023886InnovativeParticulate removal
LITTLE MAC SWTP023886Filtration, UltrafiltrationParticulate removal
LITTLE MAC SWTP023886Hypochlorination, PostDisinfection
LITTLE MAC SWTP023886Ultraviolet RadiationDisinfection
  • 1 - 13 of 13
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.