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Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS IDAZ0403702
PWS NameGRAND CANYON NATIONAL PARK
PWS TypeCommunity water system
Owner TypeFederal government
Primary SourceGround water
Primacy TypeState
Is Wholesaler?No
Population Served16590
County ServedCoconino

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
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice20732Open19-NOV-2025 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice20731Open02-SEP-2025 - No
OtherConsumer Confidence Report Complete Failure to ReportConsumer Confidence RuleConsumer Confidence Rule20730Returned to Compliance01-JUL-2025 - No
MRMonitoring, RegularVolatile Organic ChemicalsBenzene20726Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsCHLOROBENZENE20725Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsTetrachloroethylene20724Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicals1,1,2-Trichloroethane20723Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsTrichloroethylene20722Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicals1,2-Dichloropropane20721Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsCarbon tetrachloride20720Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicals1,1,1-Trichloroethane20719Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicals1,2-Dichloroethane20718Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicalstrans-1,2-Dichloroethylene20717Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicals1,1-Dichloroethylene20716Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsVinyl chloride20715Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicalsp-Dichlorobenzene20714Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicalso-Dichlorobenzene20713Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsDICHLOROMETHANE20712Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsXylenes, Total20711Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicalscis-1,2-Dichloroethylene20710Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic Chemicals1,2,4-Trichlorobenzene20709Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsToluene20727Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring, RegularVolatile Organic ChemicalsEthylbenzene20728Returned to Compliance01-APR-202530-JUN-2025No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20708Returned to Compliance01-APR-202530-APR-2025No
MRMonitoring, RegularVolatile Organic ChemicalsStyrene20729Returned to Compliance01-APR-202530-JUN-2025No
RPTLSL ReportingLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS20658Returned to Compliance17-OCT-2024 - No
TTLSL InventoryLead and Copper Rule RevisionsLEAD AND COPPER RULE REVISIONS20657Returned to Compliance17-OCT-2024 - Yes
RPTReport Sample Result/Fail Monitor (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule20662Returned to Compliance01-OCT-2024 - No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule20656Returned to Compliance01-AUG-202431-AUG-2024No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20659Returned to Compliance01-AUG-202431-AUG-2024No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice20654Returned to Compliance02-JUL-2024 - No
OtherPublic Notification Violation for NPDWR ViolationPublic Notice Rule and Revised PN RulePublic Notice20655Returned to Compliance02-JUL-2024 - No
MCLMaximum Contaminant Level Violation, AverageStage 2 Disinfectants and Disinfection Byproducts RuleTTHM20653Returned to Compliance01-APR-202430-JUN-2024Yes
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule20650Returned to Compliance01-DEC-202331-DEC-2023No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM20651Returned to Compliance01-OCT-202331-DEC-2023No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)20652Returned to Compliance01-OCT-202331-DEC-2023No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20648Returned to Compliance01-JUL-202330-SEP-2023No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTTHM20644Returned to Compliance01-APR-202330-JUN-2023No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)20645Returned to Compliance01-APR-202330-JUN-2023No
MONMonitoring, Routine (RTCR)Revised Total Coliform RuleRevised Total Coliform Rule20642Returned to Compliance01-OCT-202231-OCT-2022No
TTTreatment Technique (SWTR and GWR)Ground Water RuleGroundwater Rule20641Returned to Compliance01-JUL-202231-JUL-2022Yes
TTTreatment Technique (SWTR and GWR)Ground Water RuleGroundwater Rule20640Returned to Compliance01-JUN-202230-JUN-2022Yes
TTTreatment Technique (SWTR and GWR)Ground Water RuleGroundwater Rule20639Returned to Compliance01-MAR-202231-MAR-2022Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20635Returned to Compliance01-JAN-202231-MAR-2022No
TTTreatment Technique (SWTR and GWR)Ground Water RuleGroundwater Rule20638Returned to Compliance01-DEC-202131-DEC-2021Yes
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20632Returned to Compliance01-JUL-202130-SEP-2021No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20631Returned to Compliance01-APR-202130-JUN-2021No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20630Returned to Compliance01-JAN-202031-MAR-2020No
MRMonitoring and Reporting (DBP)Stage 1 Disinfectants and Disinfection Byproducts RuleChlorine20628Returned to Compliance01-OCT-201931-DEC-2019No
MRMonitoring and Reporting (DBP)Stage 2 Disinfectants and Disinfection Byproducts RuleTotal Haloacetic Acids (HAA5)20626Returned to Compliance01-JUN-201931-AUG-2019No
  • 1 - 50 of 276

Enforcement Actions

Enforcement Actions

Latest Enforcement IDAssociated To Violation IDEnforcement Action Type CodeEnforcement Action DescriptionEnforcement DateOriginator DescriptionEnforcement Comment
849020732SIAState Violation/Reminder Notice30-DEC-2025State -
848920716SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920728SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920727SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920726SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920709SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920710SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920711SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920712SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920713SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920714SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920715SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920729SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920717SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920718SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920719SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920720SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920721SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920722SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920723SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920724SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848920725SOXState Compliance achieved14-NOV-2025State3Q25 results submitted on 8/29/25
848720731SIAState Violation/Reminder Notice24-OCT-2025State -
848420730SIAState Violation/Reminder Notice16-OCT-2025State -
847920708SOXState Compliance achieved23-JUL-2025State -
846620659SOXState Compliance achieved15-JAN-2025State4Q24 data submitted accurately
845320662SOXState Compliance achieved09-DEC-2024Statesubmitted late 12/09/2024. JS26 12/16/2024
844920653SOXState Compliance achieved06-DEC-2024StateQ3/Q4 results below MCL for TTHM, SOXing. JS26 12/6/2024
846220657SIAState Violation/Reminder Notice07-NOV-2024State -
846420658SIAState Violation/Reminder Notice07-NOV-2024State -
846120656SOXState Compliance achieved10-OCT-2024StateSeptember data submitted 10/10/2024, SIE still required. JS26 2/5/2025
847120644SIFState Public Notification received26-AUG-2024State -
847120645SIFState Public Notification received26-AUG-2024State -
847020654SOXState Compliance achieved26-AUG-2024Statecompleted on 8/26/2024. JS26 5/7/2025
842520655SIAState Violation/Reminder Notice16-AUG-2024State -
842320652SOXState Compliance achieved30-JUL-2024State2024 Q2 DBP2 submitted properly and on-time. JS26 7/30/2024
842320651SOXState Compliance achieved30-JUL-2024State2024 Q2 DBP2 submitted properly and on-time. JS26 7/30/2024
841820650SOXState Compliance achieved13-MAR-2024StateJanuary RTCR results submitted on 2/12/24 sampling submitted late 7/20/2024. JS26 8/22/2024
841120648SOXState Compliance achieved14-NOV-2023Statesubmitted late. JS26 11/14/2023
839520642SOXState Compliance achieved02-DEC-2022StateLate data submitted 12/1/2022. JS26 12/2/2022
839020639SOXState Compliance achieved21-JUL-2022StatePWS was able to restore chlorination - JK5 07/21/2022
839020641SOXState Compliance achieved21-JUL-2022StatePWS was able to restore chlorination - JK5 07/21/2022
839020638SOXState Compliance achieved21-JUL-2022StatePWS was able to restore chlorination - JK5 07/21/2022
839020640SOXState Compliance achieved21-JUL-2022StatePWS was able to restore chlorination - JK5 07/21/2022
837720635SOXState Compliance achieved20-MAY-2022StatePWS SUBMITTED 1Q2022 MRDL REPORT LATE, SOX VIOLATION - JK5 05/20/2022
839120631SIFState Public Notification received18-MAR-2022State -
836820632SIAState Violation/Reminder Notice02-DEC-2021State -
836020630SOXState Compliance achieved01-JUL-2020State -
836020628SOXState Compliance achieved01-JUL-2020State -
833920625SIEState Public Notification requested27-NOV-2019State -
  • 1 - 50 of 260

PWS Facilities

All Facilities

Facility NameFacility IDIs SourceFacility Type DescriptionWater Type DescriptionAvailability DescriptionFacility Activity Status
WL-S037020 - ROARING SPRINGS8114YesSpringGround waterPermanentActive
DISTRIBUTION SYSTEM12715NoDistribution System/Zone - - Active
EPDS00226827NoSampling Station - - Active
XEPHIS18165NoSampling Station - - Inactive
XEPDS0018873NoSampling Station - - Inactive
STORAGE TANK 001A - 1,000,00024483NoStorage - - Active
STORAGE TANK 002A - 1,000,00024484NoStorage - - Active
STORAGE TANK 003 - 150,00024485NoStorage - - Active
STORAGE TANK 004 - 10,00024486NoStorage - - Active
STORAGE TANK 001B - 1,000,00024490NoStorage - - Active
STORAGE TANK 002B - 1,000,00024491NoStorage - - Active
STORAGE TANK 002C - 1,000,00024492NoStorage - - Active
STORAGE TANK 002D - 3,500,00024493NoStorage - - Active
STORAGE TANK 002E - 4,000,00024494NoStorage - - Active
STORAGE TANK 002F - 3,500,00024495NoStorage - - Active
STORAGE TANK 005 - 10,00024497NoStorage - - Active
STORAGE TANK 006 - 1,000,00026619NoStorage - - Active
STORAGE TANK 007 - 1,000,00026620NoStorage - - Active
STORAGE TANK 008 - 17,00026907NoStorage - - Active
TP001 - 4-LOG21720NoTreatment Plant - - Active
TP002 - CL224487NoTreatment Plant - - Active
TP003 - CL224488NoTreatment Plant - - Active
TP004 - CL224489NoTreatment Plant - - Active
TP005 - 4-LOG26621NoTreatment Plant - - Active
  • 1 - 24 of 24

PWS Treatment Processes

Treatment Processes

Facility NameFacility IDTreatment ProcessTreatment Objective
TP001 - 4-LOG21720Gaseous Chlorination, PreDisinfection
TP001 - 4-LOG217204-Log Treatment of VirusesDisinfection
TP002 - CL224487Hypochlorination, PreDisinfection
TP003 - CL224488Gaseous Chlorination, PreDisinfection
TP004 - CL224489Hypochlorination, PreDisinfection
TP005 - 4-LOG266214-Log Remove/Inactivate VirusesDisinfection
  • 1 - 6 of 6
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.