Drinking Water Compliance OS

NULATO, AK · Yukon-Koyukuk Census Area County

NULATO RIVER WELL Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Alaska’s official records. Always confirm current status with Alaska before making decisions based on this information.

System facts

System ID (PWSID)
AK2360785
System type
Community Water System
Population served
245
Service connections
70
Ownership
Native American tribal
Water source
groundwater (wells)

Violation history

  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    June 1, 2025 – June 30, 2025

    Resolved
  • LSL Inventory

    Health-based

    LEAD AND COPPER RULE REVISIONS

    October 17, 2024 – August 21, 2025

    Resolved
  • LSL Reporting

    LEAD AND COPPER RULE REVISIONS

    October 17, 2024 – August 21, 2025

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2024 – July 8, 2024

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2023 – July 6, 2023

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Styrene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Toluene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Benzene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2023 – December 31, 2025

    Archived
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2023 – December 31, 2025

    Archived
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    January 1, 2022 – June 16, 2022

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2021 – December 31, 2021

    Resolved
  • Failure To Address Deficiency

    Health-based

    Groundwater Rule

    July 1, 2017 – August 15, 2020

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2008 – July 24, 2008

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    November 1, 2005 – November 30, 2005

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    February 1, 2005 – February 28, 2005

    Archived
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2005 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2005 – December 31, 2005

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2005 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2005 – December 31, 2005

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2005 – December 31, 2005

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2003 – July 21, 2003

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    February 1, 2003 – February 28, 2003

    Archived
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    October 1, 2001 – September 25, 2002

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    July 1, 2001 – July 31, 2001

    Archived
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2001 – December 31, 2001

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2001 – December 31, 2001

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 2000 – September 30, 2000

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    July 1, 2000 – July 31, 2000

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    June 1, 2000 – June 30, 2000

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    March 1, 2000 – March 31, 2000

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    July 1, 1999 – July 31, 1999

    Archived
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 1999 – December 31, 1999

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    January 1, 1999 – January 31, 1999

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    October 1, 1997 – October 31, 1997

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    May 1, 1997 – May 31, 1997

    Archived
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 1997 – March 31, 1997

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    November 1, 1996 – November 30, 1996

    Archived
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    October 1, 1996 – December 31, 1996

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    October 1, 1996 – October 31, 1996

    Archived
  • Monitoring, Regular

    1,1,2-Trichloroethane

    October 1, 1996 – December 31, 1996

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    September 1, 1996 – September 30, 1996

    Archived
  • Monitoring, Regular

    Tetrachloroethylene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    Styrene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    Benzene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Regular

    Toluene

    July 1, 1996 – September 30, 1996

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    April 1, 1996 – April 30, 1996

    Archived
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Toluene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    Benzene

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    April 1, 1996 – June 30, 1996

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    March 1, 1996 – March 31, 1996

    Archived
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    February 1, 1996 – February 29, 1996

    Archived
  • Initial Tap Sampling for Pb and Cu

    Lead and Copper Rule

    January 1, 1996 – December 29, 1998

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    Toluene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    Benzene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    October 1, 1995 – October 31, 1995

    Archived
  • Monitoring, Regular

    Carbon tetrachloride

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    October 1, 1995 – December 31, 1995

    Resolved
  • Monitoring, Regular

    Asbestos

    January 1, 1993 – December 31, 1995

    Archived
  • Monitoring, Regular

    Nitrite

    January 1, 1993 – December 31, 1995

    Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Contact

AGNES, CYNTHIA

907-898-2205

NULATO, AK 99765