Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	055294101
PWS Name	GRAND PORTAGE
PWS Type	Community water system
Owner Type	Tribal Government
Primary Source	Surface water
Primacy Type	Tribal
Is Wholesaler?	No
Population Served	820
County Served

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.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1010528	Returned to Compliance	01-FEB-2026	28-FEB-2026	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	1010529	Returned to Compliance	01-FEB-2026	28-FEB-2026	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1010527	Returned to Compliance	01-FEB-2026	28-FEB-2026	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	1010526	Known	01-JUL-2025	31-DEC-2025	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1010524	Returned to Compliance	01-JUL-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010516	Returned to Compliance	02-MAY-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010486	Returned to Compliance	10-FEB-2025	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010510	Returned to Compliance	09-FEB-2025	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	1010523	Returned to Compliance	01-JAN-2025	31-DEC-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010522	Returned to Compliance	29-OCT-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010515	Returned to Compliance	19-SEP-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010514	Returned to Compliance	11-AUG-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010508	Returned to Compliance	14-JUL-2024	-	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1010470	Returned to Compliance	01-JUL-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010513	Returned to Compliance	13-MAR-2024	-	No
TT	Failure To Address Deficiency	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	1010520	Returned to Compliance	24-FEB-2024	-	Yes
TT	Failure To Address Deficiency	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	1010521	Open	24-FEB-2024	-	Yes
TT	Failure To Address Deficiency	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	1010518	Returned to Compliance	24-FEB-2024	-	Yes
TT	Failure To Address Deficiency	Long Term 2 Enhanced Surface Water Treatment Rule	Long Term 2 Enhanced Surface Water Treatment Rule	1010423	Returned to Compliance	24-JAN-2024	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010481	Returned to Compliance	17-JAN-2024	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010485	Returned to Compliance	11-JAN-2024	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1010476	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1010477	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1010401	Returned to Compliance	01-JAN-2024	-	No
MR	Water Quality Parameter M/R	Lead and Copper Rule	Lead and Copper Rule	1010471	Returned to Compliance	01-JAN-2024	30-JUN-2024	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010492	Returned to Compliance	16-NOV-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010478	Returned to Compliance	15-OCT-2023	-	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1010399	Returned to Compliance	01-OCT-2023	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1010396	Returned to Compliance	01-AUG-2023	31-AUG-2023	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1010397	Returned to Compliance	01-AUG-2023	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	1010394	Returned to Compliance	01-JUL-2023	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1010395	Returned to Compliance	01-JUL-2023	31-JUL-2023	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1010392	Returned to Compliance	01-FEB-2023	28-FEB-2023	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010491	Returned to Compliance	20-JAN-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010498	Returned to Compliance	20-JAN-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010509	Returned to Compliance	19-JAN-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010489	Returned to Compliance	19-JAN-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010488	Returned to Compliance	14-JAN-2023	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1010497	Returned to Compliance	11-JAN-2023	-	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	1010428	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	1010458	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	1010457	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Total Polychlorinated Biphenyls (PCB)	1010462	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	1010426	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	1010425	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	1010424	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	1010427	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor epoxide	1010456	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Heptachlor	1010455	Returned to Compliance	01-JAN-2023	31-DEC-2023	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,3,7,8-TCDD	1010454	Returned to Compliance	01-JAN-2023	31-DEC-2023	No

1 - 50 of 515

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
1865	1010524	EOX	Federal Compliance achieved	26-MAR-2026	Region	-
1877	1010527	EOX	Federal Compliance achieved	11-MAR-2026	Region	System returned to compliance with data taken 3/4/2026. Submitted to EPA 3/9/2026.
1859	1010523	EOX	Federal Compliance achieved	10-MAR-2026	Region	-
1878	1010528	EOX	Federal Compliance achieved	04-MAR-2026	Region	-
1884	1010529	EOX	Federal Compliance achieved	04-MAR-2026	Region	-
1856	1010033	EO6	Federal Intentional no-action	06-JAN-2026	Region	-
1861	1010522	EOX	Federal Compliance achieved	10-DEC-2025	Region	-
1862	1010471	EIF	Federal Public Notification received from PWS	10-DEC-2025	Region	-
1712	1010518	EIE	Federal Public Notification requested	09-OCT-2025	Region	-
1712	1010520	EIE	Federal Public Notification requested	09-OCT-2025	Region	-
1712	1010521	EIE	Federal Public Notification requested	09-OCT-2025	Region	-
1711	1010478	EIA	Federal Violation/Reminder Notice	09-OCT-2025	Region	-
1712	1010423	EIE	Federal Public Notification requested	09-OCT-2025	Region	-
1851	1010462	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1851	1010463	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1851	1010464	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1851	1010465	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1855	1010466	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010402	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010403	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010404	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010405	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010406	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010407	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010408	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010409	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010410	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010411	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010412	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010413	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010414	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010415	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010416	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010417	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010418	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010419	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010420	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010421	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1852	1010422	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010424	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010425	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010426	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010427	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010428	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010429	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010430	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010431	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010432	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010433	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-
1850	1010434	EIF	Federal Public Notification received from PWS	01-OCT-2025	Region	-

1 - 50 of 511

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
INTAKE #2 FROM LAKE SUPERIOR	1009	Yes	Intake	Surface water	Permanent	Active
INTAKE #1 FROM LAKE SUPERIOR	1011	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION SYSTEM	706	No	Distribution System/Zone	-	-	Active
SAMPLING SITE #1	1744	No	Sampling Station	-	-	Active
SAMPLING SITE #2	1745	No	Sampling Station	-	-	Active
ENTRY POINT #1	705	No	Sampling Station	-	-	Active
STORAGE FACILITY	1010	No	Storage	-	-	Active
TREATMENT PLANT #1	64	No	Treatment Plant	-	-	Active

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT #1	64	Filtration, Pressure Sand	Particulate removal
TREATMENT PLANT #1	64	Coagulation	Particulate removal
TREATMENT PLANT #1	64	Gaseous Chlorination, Post	Disinfection
TREATMENT PLANT #1	64	Filtration, Pressure Sand	Particulate removal
TREATMENT PLANT #1	64	Coagulation	Particulate removal
TREATMENT PLANT #1	64	Gaseous Chlorination, Post	Disinfection

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.

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