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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID105300027
PWS NameCHEHALIS TRIBAL HOUSING
PWS TypeCommunity water system
Owner TypeTribal Government
Primary SourceGround water
Primacy TypeTribal
Is Wholesaler?Yes
Population Served620
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, RegularSynthetic Organic ChemicalsBHC-GAMMA296Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsBenzo(a)pyrene286Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsToxaphene292Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsDi(2-ethylhexyl) adipate297Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsSimazine284Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsDi(2-ethylhexyl) phthalate295Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHexachlorocyclopentadiene287Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsAtrazine291Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsLASSO293Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic Chemicals2,3,7,8-TCDD290Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHeptachlor283Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHeptachlor epoxide289Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine261Returned to Compliance01-OCT-202531-OCT-2025No
RPTReport Sample Result/Fail Monitor (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule280Returned to Compliance01-OCT-2025 - No
MRMonitoring, RegularSynthetic Organic ChemicalsTotal Polychlorinated Biphenyls (PCB)282Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHEXACHLOROBENZENE294Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsEndrin285Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsChlordane281Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsMethoxychlor288Returned to Compliance01-OCT-202531-DEC-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsEndrin265Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsBHC-GAMMA277Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsMethoxychlor269Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsToxaphene274Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsDi(2-ethylhexyl) adipate279Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsSimazine264Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsDi(2-ethylhexyl) phthalate276Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHexachlorocyclopentadiene268Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsAtrazine273Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsLASSO275Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic Chemicals2,3,7,8-TCDD272Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHeptachlor263Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHeptachlor epoxide271Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsTotal Polychlorinated Biphenyls (PCB)267Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsBenzo(a)pyrene270Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsChlordane266Returned to Compliance01-JUL-202530-SEP-2025No
MRMonitoring, RegularSynthetic Organic ChemicalsHEXACHLOROBENZENE278Returned to Compliance01-JUL-202530-SEP-2025No
RPTReport Sample Result/Fail Monitor (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule258Returned to Compliance01-JUN-2025 - No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine255Known01-JUN-202530-JUN-2025No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice250Returned to Compliance03-APR-2025 - No
RPTReport Sample Result/Fail Monitor (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule253Returned to Compliance01-APR-2025 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS249Returned to Compliance17-OCT-2024 - Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine245Returned to Compliance01-SEP-202430-SEP-2024No
RPTReport Sample Result/Fail Monitor (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule246Returned to Compliance01-MAR-2024 - No
MRMonitoring, RegularNitrate RuleNitrate247Returned to Compliance01-JAN-202431-DEC-2024No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)260Known01-JAN-202331-DEC-2025No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM259Known01-JAN-202331-DEC-2025No
RPTReport Sample Result/Fail Monitor (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule240Returned to Compliance01-JUN-2022 - No
MRMonitoring, RegularNitrate RuleNitrate238Returned to Compliance01-JAN-202131-DEC-2021No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule236Returned to Compliance31-OCT-2020 - No
MRLead Consumer NoticeLead and Copper RuleLead and Copper Rule234Returned to Compliance01-JAN-2018 - No
  • 1 - 50 of 309

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
127295EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127294EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127293EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127291EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127287EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127286EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127284EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
127297EOXFederal Compliance achieved31-MAR-2026RegionSOCs results received collected March 2026. -CJA 4/1/26
124290EOXFederal Compliance achieved19-FEB-2026RegionDioxin result received collected December 2025. -CJA 2/25/26
124272EOXFederal Compliance achieved19-FEB-2026RegionDioxin result received collected December 2025. -CJA 2/25/26
123296EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123292EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123289EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123288EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123285EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123283EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123281EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
123282EOXFederal Compliance achieved19-FEB-2026RegionSOCs results received collected January 2026. -CJA 2/19/26
88267EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88278EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88277EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88276EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88275EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88274EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88273EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88263EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88264EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88265EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88266EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88279EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88268EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88269EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88270EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
88271EOXFederal Compliance achieved22-NOV-2025RegionSOCs results received - collected on time but reported late. -CJA 11/26/25
81280EOXFederal Compliance achieved14-NOV-2025RegionPWS sent October Total Coliform with CL2 late. Rule manager determined return to compliance.
81261EOXFederal Compliance achieved14-NOV-2025RegionPWS sent October Total Coliform with CL2 late. Rule manager determined return to compliance.
77247EOXFederal Compliance achieved12-SEP-2025RegionNitrate result received collected 3rd quarter 2025. -CJA 10/10/25
75258EOXFederal Compliance achieved14-JUL-2025RegionPWS submitted June TC sample(s) and free chlorine residual late. Rule manager determined return to compliance.
66249EOXFederal Compliance achieved30-JUN-2025Region -
69250EOXFederal Compliance achieved27-JUN-2025Region -
65253EOXFederal Compliance achieved23-MAY-2025RegionPWS submitted April RTCR sample report and chlorine residual late. Rule manager determined return to compliance.
56246EOXFederal Compliance achieved14-OCT-2024RegionSystem submitted late reports for Sep-2024 RTCR and chlorine residual. --DCS
56245EOXFederal Compliance achieved14-OCT-2024RegionSystem submitted late reports for Sep-2024 RTCR and chlorine residual. --DCS
55242EOXFederal Compliance achieved20-FEB-2023RegionRadionuclides results received collected December 2022. -CJA 2/21/23
55244EOXFederal Compliance achieved20-FEB-2023RegionRadionuclides results received collected December 2022. -CJA 2/21/23
55243EOXFederal Compliance achieved20-FEB-2023RegionRadionuclides results received collected December 2022. -CJA 2/21/23
54240EOXFederal Compliance achieved12-JUL-2022RegionSample report submitted late. Compliance determination made by rule manager.
53238EOXFederal Compliance achieved10-DEC-2021RegionSample collected on time; results submitted late. -CJA 12/10/21
52236EOXFederal Compliance achieved22-FEB-2021RegionPWS sent LCN Certification in Feb 2021. Results not entered until 12/8/2021
50235EOXFederal Compliance achieved28-FEB-2020RegionResults received; sample collected in 2019. -CJA 2/28/20
  • 1 - 50 of 300

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WELL #31398YesWell Ground waterPermanentActive
WELL #2855YesWell Ground waterPermanentActive
WELL #1370YesWell Ground waterPermanentActive
CHEHALIS TRIBAL HOUSING DISTRIBUTION531NoDistribution System/Zone - - Active
STAGE 2 DBP IDSE1025NoDistribution System/Zone - - Inactive
BOOSTER PUMPS #21568NoPump Facility - - Active
BOOSTER PUMPS #1617NoPump Facility - - Active
TANK #1856NoStorage - - Active
TANK #2857NoStorage - - Active
WELL #1 & #2 PUMPHOUSE130NoTreatment Plant - - Active
WELL #3 PUMPHOUSE1567NoTreatment Plant - - Active
  • 1 - 11 of 11

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
WELL #1 & #2 PUMPHOUSE130Hypochlorination, PreDisinfection
WELL #1 & #2 PUMPHOUSE130pH Adjustment, PostCorrosion control
WELL #3 PUMPHOUSE1567Hypochlorination, PreDisinfection
  • 1 - 3 of 3
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.