Public Water Partners

HERMISTON, OR · Morrow County

BLACK MOUNTAIN WATER DISTRICT Water System

Consumer Confidence Report status

BLACK MOUNTAIN WATER DISTRICT must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for BLACK MOUNTAIN WATER DISTRICT.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

System facts

System ID (PWSID)
OR4100370
System type
Community Water System
Population served
43
Service connections
88
Ownership
privately owned
Water source
groundwater (wells)

BLACK MOUNTAIN WATER DISTRICT is one of 1,168 community water systems in Oregon in the 500 or fewer people size category, serving 43 people from groundwater.

As of August 1, 2026, its federal record holds 100 entries between 1993 and 2025, all of which EPA lists as closed.

Of the 100, 88 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, volatile organic chemicals, and inorganic chemicals.

Violation history

  • Failure to Conduct Assessment Monitoring

    —

    COLIPHAGE

    January 1, 2025 – December 31, 2025

    Archived

  • Failure to Conduct Assessment Monitoring

    —

    COLIPHAGE

    January 1, 2025 – December 31, 2025

    Archived

  • Failure to Conduct Assessment Monitoring

    —

    COLIPHAGE

    January 1, 2025 – December 31, 2025

    Archived

  • Monitoring, Routine (RTCR)

    —

    Revised Total Coliform Rule

    September 1, 2023 – September 30, 2023

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2023 – July 21, 2023

    Resolved

  • Failure to Conduct Assessment Monitoring

    —

    COLIPHAGE

    January 1, 2021 – December 31, 2021

    Resolved

  • Failure to Conduct Assessment Monitoring

    —

    COLIPHAGE

    January 1, 2021 – December 31, 2021

    Resolved

  • Failure to Conduct Assessment Monitoring

    —

    COLIPHAGE

    January 1, 2021 – December 31, 2021

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    October 1, 2017 – December 30, 2019

    Resolved

  • Public Notification Violation without NPDWR Violation

    —

    Public Notice

    September 29, 2017 – February 7, 2019

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    May 6, 2017 – June 23, 2017

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Nitrite

    January 1, 2017 – October 8, 2019

    Resolved

  • Monitoring, Regular

    —

    Arsenic

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Barium

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Cadmium

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Chromium

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    CYANIDE

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Fluoride

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Mercury

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Nickel

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Beryllium, Total

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Thallium, Total

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Selenium

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Combined Uranium

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2017 – December 31, 2019

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    September 1, 2015 – September 30, 2015

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    July 24, 2015 – July 24, 2015

    Resolved

  • Maximum Contaminant Level Violation, Acute (TCR)

    Health-based

    Coliform (TCR)

    December 1, 2014 – December 31, 2014

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    November 1, 2013 – November 30, 2013

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    October 1, 2013 – October 31, 2013

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    June 1, 2013 – June 30, 2013

    Resolved

  • Maximum Contaminant Level Violation, Acute (TCR)

    Health-based

    Coliform (TCR)

    May 1, 2013 – May 31, 2013

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    August 24, 2012 – October 23, 2012

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    August 27, 2010 – October 23, 2012

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    July 1, 2010 – July 31, 2010

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    June 1, 2010 – June 30, 2010

    Resolved

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    January 1, 2010 – November 8, 2010

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    December 1, 2009 – December 31, 2009

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2008 – December 31, 2008

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    December 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    April 1, 2007 – April 30, 2007

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    March 1, 2007 – March 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2006 – December 31, 2006

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Thallium, Total

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Chromium

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2005 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2003 – December 31, 2003

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    January 1, 2001 – March 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    September 1, 2000 – September 30, 2000

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    April 1, 2000 – June 30, 2000

    Resolved

  • Monitoring, Repeat Minor (TCR)

    —

    Coliform (TCR)

    April 1, 2000 – June 30, 2000

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    March 1, 1999 – March 31, 1999

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 1998 – December 31, 1998

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    September 1, 1997 – September 30, 1997

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    June 1, 1997 – June 30, 1997

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    March 1, 1997 – March 31, 1997

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    June 1, 1996 – June 30, 1996

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    March 1, 1996 – March 31, 1996

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    March 1, 1995 – March 31, 1995

    Resolved

  • Monitoring, Repeat Minor (TCR)

    —

    Coliform (TCR)

    July 1, 1994 – September 30, 1994

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    July 1, 1993 – September 30, 1993

    Resolved

  • Monitoring, Repeat Minor (TCR)

    —

    Coliform (TCR)

    April 1, 1993 – June 30, 1993

    Resolved

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

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is BLACK MOUNTAIN WATER DISTRICT required to publish a Consumer Confidence Report?

Yes. BLACK MOUNTAIN WATER DISTRICT is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is BLACK MOUNTAIN WATER DISTRICT’s next Consumer Confidence Report due?

BLACK MOUNTAIN WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does BLACK MOUNTAIN WATER DISTRICT have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for BLACK MOUNTAIN WATER DISTRICT.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

BLACK MOUNTAIN WATER DISTRICT

541-720-0514

HERMISTON, OR 97838