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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID083090050
PWS NameASSINIBOINE & SIOUX RURAL WATER SYSTEM
PWS TypeCommunity water system
Owner TypeFederal government
Primary SourceSurface water
Primacy TypeTribal
Is Wholesaler?Yes
Population Served1726
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
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM40Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)41Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)38Returned to Compliance01-SEP-202330-NOV-2023No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM37Returned to Compliance01-SEP-202330-NOV-2023No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule26Returned to Compliance01-JAN-201831-JAN-2018No
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL25Returned to Compliance01-APR-201530-JUN-2015Yes
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL24Returned to Compliance01-JAN-201531-MAR-2015Yes
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL23Returned to Compliance01-OCT-201431-DEC-2014Yes
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL22Returned to Compliance01-JUL-201430-SEP-2014Yes
TTTreatment Technique Precursor RemovalStage 1 Disinfectants and Disinfection Byproducts RuleCARBON, TOTAL21Returned to Compliance01-APR-201430-JUN-2014Yes
TTSingle Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule13Returned to Compliance01-JUN-201330-JUN-2013Yes
TTMonthly Turbidity Exceed (Enhanced SWTR)Interim and Long Term 1 Enhanced Surface Water Treatment RuleInterim Enhanced Surface Water Treatment Rule14Returned to Compliance01-JUN-201330-JUN-2013Yes
  • 1 - 12 of 12

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
2540SOXState Compliance achieved09-SEP-2025RegionRTC with sample collected 8/1/2025 -BCS
2541SOXState Compliance achieved09-SEP-2025RegionRTC with sample collected 8/1/2025 -BCS
2238SIFState Public Notification received26-FEB-2024RegionPN received back in 2024, saving and recording now -BCS 3/4/2025
2237SIFState Public Notification received26-FEB-2024RegionPN received back in 2024, saving and recording now -BCS 3/4/2025
1826SOXState Compliance achieved21-FEB-2018RegionPWS RTC'd when they collected two samples on 02/21/18. JSH 06/20/18
1525SOXState Compliance achieved06-NOV-2015Region -
1524SOXState Compliance achieved06-NOV-2015Region -
1523SOXState Compliance achieved06-NOV-2015Region -
1521SOXState Compliance achieved06-NOV-2015Region -
1522SOXState Compliance achieved06-NOV-2015Region -
613SOXState Compliance achieved22-AUG-2013RegionSOX'ed SWTR violations from June based on compliant monitoring results for month of July.
614SOXState Compliance achieved22-AUG-2013RegionSOX'ed SWTR violations from June based on compliant monitoring results for month of July.
  • 1 - 12 of 12

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
MISSOURI RIVER WATER INTAKE12348YesIntakeSurface waterPermanentActive
ASSINIBOINE & SIOUX RWS12350NoDistribution System/Zone - - Active
WOLF POINT BOOSTER STATION12742NoPump Facility - - Active
BROCKTON BOOSTER STATION12743NoPump Facility - - Active
WANZI BOOSTER STATION12968NoPump Facility - - Active
NUMPA BOOSTER STATION12969NoPump Facility - - Active
YAMNI BOOSTER STATION12970NoPump Facility - - Active
TOPA BOOSTER STATION12972NoPump Facility - - Active
WOLF POINT NORTH STORAGE TANK12631NoStorage - - Active
WOLF POINT SOUTH STORAGE TANK12632NoStorage - - Active
BROCKTON WEST STORAGE TANK12633NoStorage - - Active
BROCKTON EAST STORAGE TANK12634NoStorage - - Active
YAMINI STORAGE TANK12971NoStorage - - Active
NOATH STORAGE TANK12973NoStorage - - Active
ASSINIBOINE & SIOUX RWS12349NoTreatment Plant - - Active
  • 1 - 15 of 15

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
ASSINIBOINE & SIOUX RWS12349CoagulationParticulate removal
ASSINIBOINE & SIOUX RWS12349FlocculationParticulate removal
ASSINIBOINE & SIOUX RWS12349SedimentationParticulate removal
ASSINIBOINE & SIOUX RWS12349Filtration, Rapid SandParticulate removal
ASSINIBOINE & SIOUX RWS12349Gaseous Chlorination, PostDisinfection
ASSINIBOINE & SIOUX RWS12349ChloraminesDisinfection by-products control
ASSINIBOINE & SIOUX RWS12349Inhibitor, OrthophosphateCorrosion control
ASSINIBOINE & SIOUX RWS12349PermanganateManganese removal
  • 1 - 8 of 8
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.