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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID083090011
PWS NameCROW AGENCY WATER SYSTEM
PWS TypeCommunity water system
Owner TypeFederal government
Primary SourceSurface water
Primacy TypeTribal
Is Wholesaler?No
Population Served2057
County Served

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
OtherRecord KeepingInterim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19805Open23-SEP-2025 - No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19804Returned to Compliance01-JUL-202531-JUL-2025No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19803Returned to Compliance01-MAY-202531-MAY-2025No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19802Returned to Compliance01-FEB-202528-FEB-2025No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19800Returned to Compliance01-JAN-202531-JAN-2025No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19799Returned to Compliance01-DEC-202431-DEC-2024No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19798Returned to Compliance01-NOV-202430-NOV-2024No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule19740Returned to Compliance01-JUL-2023 - No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19739Returned to Compliance01-JUN-202330-JUN-2023No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19748Returned to Compliance01-APR-202330-JUN-2023No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19747Returned to Compliance01-APR-202330-JUN-2023No
MRMonitoring, Turbidity (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule19738Returned to Compliance01-MAR-202331-MAR-2023No
MRMonitoring, RegularVolatile Organic ChemicalsCHLOROBENZENE19773Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsTetrachloroethylene19772Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicals1,1,2-Trichloroethane19771Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsTrichloroethylene19770Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicals1,2-Dichloropropane19769Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsCarbon tetrachloride19768Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicals1,1,1-Trichloroethane19767Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicals1,2-Dichloroethane19766Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicalstrans-1,2-Dichloroethylene19765Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsVinyl chloride19763Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicalsp-Dichlorobenzene19762Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicalso-Dichlorobenzene19761Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsDICHLOROMETHANE19760Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsXylenes, Total19759Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsChromium19789Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicalscis-1,2-Dichloroethylene19758Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicals1,2,4-Trichlorobenzene19757Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsSelenium19780Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsNickel19788Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsMercury19778Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsCYANIDE19785Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsCadmium19782Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsBarium19787Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularArsenic RuleArsenic19783Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsThallium, Total19781Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsBeryllium, Total19784Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsBenzene19774Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsToluene19775Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsEthylbenzene19776Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic ChemicalsStyrene19777Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularInorganic ChemicalsAntimony, Total19779Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring, RegularVolatile Organic Chemicals1,1-Dichloroethylene19764Returned to Compliance01-JAN-202331-DEC-2023No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19736Returned to Compliance01-JAN-202231-MAR-2022No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19735Returned to Compliance01-JAN-202231-MAR-2022No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule19734Returned to Compliance30-DEC-2021 - No
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19733Returned to Compliance01-OCT-202031-DEC-2020Yes
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19729Returned to Compliance01-OCT-202031-DEC-2020Yes
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL19730Returned to Compliance01-OCT-202031-DEC-2020Yes
  • 1 - 50 of 176

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
164119805SIAState Violation/Reminder Notice19-NOV-2025Region -
164019804SOXState Compliance achieved01-OCT-2025RegionSeptember 2025 SWTR report received prior to 10/10/2025. Closed out reporting violation. 10/1/2025. jc
163719803SOXState Compliance achieved15-JUL-2025RegionSystem submitted June 2025 monthly operating report prior to July 10, 2025. 7/15/2025. jc
162319785SOXState Compliance achieved19-APR-2024Region -
162319783SOXState Compliance achieved19-APR-2024Region -
162319782SOXState Compliance achieved19-APR-2024Region -
162319781SOXState Compliance achieved19-APR-2024Region -
162319780SOXState Compliance achieved19-APR-2024Region -
162319779SOXState Compliance achieved19-APR-2024Region -
162319778SOXState Compliance achieved19-APR-2024Region -
162319787SOXState Compliance achieved19-APR-2024Region -
162319788SOXState Compliance achieved19-APR-2024Region -
162319789SOXState Compliance achieved19-APR-2024Region -
162319784SOXState Compliance achieved19-APR-2024Region -
162219761SOXState Compliance achieved17-APR-2024Region -
162219777SOXState Compliance achieved17-APR-2024Region -
162219776SOXState Compliance achieved17-APR-2024Region -
162219775SOXState Compliance achieved17-APR-2024Region -
162219774SOXState Compliance achieved17-APR-2024Region -
162219773SOXState Compliance achieved17-APR-2024Region -
162219772SOXState Compliance achieved17-APR-2024Region -
162219771SOXState Compliance achieved17-APR-2024Region -
162219770SOXState Compliance achieved17-APR-2024Region -
162219769SOXState Compliance achieved17-APR-2024Region -
162219768SOXState Compliance achieved17-APR-2024Region -
162219767SOXState Compliance achieved17-APR-2024Region -
162219766SOXState Compliance achieved17-APR-2024Region -
162219765SOXState Compliance achieved17-APR-2024Region -
162219764SOXState Compliance achieved17-APR-2024Region -
162219763SOXState Compliance achieved17-APR-2024Region -
162219762SOXState Compliance achieved17-APR-2024Region -
162219760SOXState Compliance achieved17-APR-2024Region -
162219759SOXState Compliance achieved17-APR-2024Region -
162219758SOXState Compliance achieved17-APR-2024Region -
162219757SOXState Compliance achieved17-APR-2024Region -
160819740SOXState Compliance achieved29-AUG-2023RegionSubmitted CCR Report late, 8/29/2023. -BS
159819739SOXState Compliance achieved01-AUG-2023RegionJune report received 7/30/2023. jc.
158619734SOXState Compliance achieved07-MAR-2022Region -
158419727SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419729SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419723SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419730SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419731SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419726SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419722SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419724SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
158419728SOXState Compliance achieved25-OCT-2021RegionCompliance attained 1st quarter 2021. swt 10/25/2021
155619719SOXState Compliance achieved15-SEP-2020RegionSamples collected in May 2020. swt 09/15/2020
155619720SOXState Compliance achieved15-SEP-2020RegionSamples collected in May 2020. swt 09/15/2020
153119674SOXState Compliance achieved21-AUG-2019RegionCompletion of plant rehabilitation project by IHS addresses this violation.
  • 1 - 50 of 116

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
BIA BIGHORN INTAKE10928YesIntakeSurface waterPermanentActive
IHS INTAKE13076YesIntakeSurface waterPermanentActive
TRIBAL BIGHORN INTAKE12502YesIntakeSurface waterPermanentActive
CROW AGENCY WS11050NoDistribution System/Zone - - Active
CROW AGENCY WATER SYSTE11180NoOther - - Inactive
TRIBAL PUMP FACILITY11847NoPump Facility - - Active
HOSUING AUTHORITY PUMP FACILITY12678NoPump Facility - - Active
BIA HIGH SERVICE PUMPS (2)13102NoPump Facility - - Active
TRIBAL HIGH SERVICE PUMPS (2)13103NoPump Facility - - Active
NORTH WHITE STORAGE TANK (665K GAL)11845NoStorage - - Active
SOUTH BLUE STORAGE TANK (750K GAL)11846NoStorage - - Active
BIA CLEARWELL13077NoStorage - - Active
TRIBAL CLEARWELL13078NoStorage - - Active
BIA CROW AGENCY TREATMENT PLANT11575NoTreatment Plant - - Active
TRIBAL FILTRATION PLANT12273NoTreatment Plant - - Active
  • 1 - 15 of 15

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
BIA CROW AGENCY TREATMENT PLANT11575CoagulationParticulate removal
BIA CROW AGENCY TREATMENT PLANT11575Filtration, Rapid SandParticulate removal
BIA CROW AGENCY TREATMENT PLANT11575FlocculationParticulate removal
BIA CROW AGENCY TREATMENT PLANT11575SedimentationParticulate removal
BIA CROW AGENCY TREATMENT PLANT11575Hypochlorination, PostDisinfection
TRIBAL FILTRATION PLANT12273CoagulationParticulate removal
TRIBAL FILTRATION PLANT12273SedimentationParticulate removal
TRIBAL FILTRATION PLANT12273FlocculationParticulate removal
TRIBAL FILTRATION PLANT12273Filtration, Rapid SandParticulate removal
TRIBAL FILTRATION PLANT12273Gaseous Chlorination, PostDisinfection
  • 1 - 10 of 10
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.