Is DOON WATER SUPPLY required to publish a Consumer Confidence Report?

Yes. DOON WATER SUPPLY 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 DOON WATER SUPPLY’s next Consumer Confidence Report due?

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

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.

DOON, IA · Lyon County

DOON WATER SUPPLY Water System

Consumer Confidence Report status

DOON WATER SUPPLY 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 DOON WATER SUPPLY.

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 Iowa’s official records. Always confirm current status with Iowa before making decisions based on this information.

System facts

System ID (PWSID): IA6015047
System type: Community Water System
Population served: 619
Service connections: 240
Ownership: local government
Water source: groundwater (wells)

DOON WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 619 people from groundwater.

As of August 1, 2026, its federal record holds 25 entries between 1980 and 2017, all of which EPA lists as closed. Nothing has been added since 2017.

Of the 25, 15 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 inorganic chemicals, the Total Coliform Rules, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2017 – January 31, 2017
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2014 – June 30, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2011 – March 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2011 – March 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2008 – January 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2008 – March 18, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2006 – November 30, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2006 – December 31, 2006
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 2006 – August 31, 2006
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 2006 – April 30, 2006
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
September 1, 2005 – September 30, 2005
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 2005 – May 31, 2005
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2003 – October 31, 2003
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 2000 – April 30, 2000
Resolved
Monitoring, Regular
—
Selenium
April 1, 1991 – March 31, 1994
Resolved
Monitoring, Regular
—
Chromium
April 1, 1991 – March 31, 1994
Resolved
Monitoring, Regular
—
Fluoride
April 1, 1991 – March 31, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 1991 – February 28, 1991
Resolved
Monitoring, Regular
—
Nitrate
October 1, 1988 – December 31, 1988
Resolved
Notification, Public
—
Nitrate
January 1, 1987 – January 31, 1987
Resolved
Notification, Public
—
Nitrate
July 1, 1986 – July 31, 1986
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 12, 1985 – October 11, 1985
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 1982 – December 31, 1984
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Nitrate
November 1, 1980 – October 31, 1981
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2017 – January 31, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2014 – June 30, 2014	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2011 – March 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – March 31, 2011	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2008 – January 31, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – March 18, 2008	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
November 1, 2006 – November 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2006 – August 31, 2006	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
April 1, 2006 – April 30, 2006	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
September 1, 2005 – September 30, 2005	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
May 1, 2005 – May 31, 2005	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
April 1, 2004 – June 30, 2004	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Resolved
October 1, 2003 – October 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2000 – April 30, 2000	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1991 – March 31, 1994	Monitoring, Regular	Selenium	—	Resolved
April 1, 1991 – March 31, 1994	Monitoring, Regular	Chromium	—	Resolved
April 1, 1991 – March 31, 1994	Monitoring, Regular	Fluoride	—	Resolved
February 1, 1991 – February 28, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1988 – December 31, 1988	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1987 – January 31, 1987	Notification, Public	Nitrate	—	Resolved
July 1, 1986 – July 31, 1986	Notification, Public	Nitrate	—	Resolved
March 12, 1985 – October 11, 1985	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 1982 – December 31, 1984	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
November 1, 1980 – October 31, 1981	Maximum Contaminant Level Violation, Average	Nitrate	Health-based	Archived

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

Enforcement actions

March 10, 2026State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 10, 2026State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 10, 2026State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 4, 2026State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 4, 2026State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 4, 2026State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
February 2, 2023State Public Notification received1 linked violation
January 18, 2023State Public Notification requested1 linked violation
January 18, 2023State Formal Notice of Violation issued1 linked violation
January 10, 2023State Compliance achieved1 linked violation
October 12, 2020State Public Notification received1 linked violation
September 17, 2020State Formal Notice of Violation issued1 linked violation
September 17, 2020State Public Notification requested1 linked violation
September 9, 2020State Compliance achieved1 linked violation
March 5, 2020State Public Notification received1 linked violation
December 30, 2019State Public Notification requested1 linked violation
December 30, 2019State Formal Notice of Violation issued1 linked violation
December 17, 2019State Compliance achieved1 linked violation
April 12, 2017State Public Notification received1 linked violation
February 20, 2017State Formal Notice of Violation issued1 linked violation
February 20, 2017State Public Notification requested1 linked violation
February 6, 2017State Compliance achieved1 linked violation
August 8, 2014State Public Notification received2 linked violations
July 22, 2014State Compliance achieved1 linked violation
July 17, 2014State Formal Notice of Violation issued1 linked violation
March 31, 2007State Compliance achieved2 linked violations
December 21, 2006State Formal Notice of Violation issued1 linked violation
December 21, 2006State Public Notification requested2 linked violations
December 4, 2006State Compliance achieved1 linked violation
December 4, 2006State Compliance achieved2 linked violations
December 4, 2006State Compliance achieved1 linked violation
December 4, 2006State Compliance achieved4 linked violations
December 4, 2006State Compliance achieved3 linked violations
October 16, 2006State Public Notification received1 linked violation
October 5, 2006State Formal Notice of Violation issued1 linked violation
July 25, 2006State Public Notification received4 linked violations
July 10, 2006State Public Notification received4 linked violations
July 10, 2006State Public Notification received5 linked violations
March 17, 2006State Public Notification received3 linked violations
February 6, 2006State Public Notification received3 linked violations
January 31, 2006State Formal Notice of Violation issued2 linked violations
December 14, 2005State Public Notification requested2 linked violations
November 16, 2005State Formal Notice of Violation issued2 linked violations
November 16, 2005State Public Notification requested2 linked violations
October 19, 2005State Public Notification received2 linked violations
October 13, 2005State Public Notification requested7 linked violations
September 22, 2005State Public Notification received1 linked violation
September 16, 2005State Public Notification requested1 linked violation
September 16, 2005State Formal Notice of Violation issued1 linked violation
August 17, 2005State Public Notification requested2 linked violations
July 29, 2005State Public Notification received3 linked violations
May 20, 2005State Public Notification requested3 linked violations
May 3, 2005State Bilateral Compliance Agreement signed2 linked violations
May 3, 2005State Bilateral Compliance Agreement signed2 linked violations
May 3, 2005State Bilateral Compliance Agreement signed2 linked violations
May 3, 2005State Bilateral Compliance Agreement signed6 linked violations
May 3, 2005State Bilateral Compliance Agreement signed2 linked violations
May 3, 2005State Bilateral Compliance Agreement signed2 linked violations
May 3, 2005State Bilateral Compliance Agreement signed2 linked violations
May 3, 2005State Bilateral Compliance Agreement signed1 linked violation
April 15, 2005State Formal Notice of Violation issued5 linked violations
April 15, 2005State Public Notification requested6 linked violations
February 24, 2005State Public Notification received9 linked violations
February 21, 2005State Formal Notice of Violation issued6 linked violations
May 7, 2004State Formal Notice of Violation issued2 linked violations
May 7, 2004State Bilateral Compliance Agreement signed2 linked violations
November 19, 2003State Formal Notice of Violation issued2 linked violations
November 12, 2003State Compliance achieved5 linked violations
February 3, 2003State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 24, 2003State Public Notification requested1 linked violation
January 24, 2003State Formal Notice of Violation issued1 linked violation
June 6, 2000State Public Notification received2 linked violations
May 17, 2000State Formal Notice of Violation issued1 linked violation
May 17, 2000State Public Notification requested1 linked violation
May 15, 2000State Compliance achieved1 linked violation
November 17, 1997State Public Notification requested2 linked violations
June 23, 1997State Formal Notice of Violation issued8 linked violations
May 29, 1996State Compliance achieved4 linked violations
May 29, 1996State Compliance achieved4 linked violations
March 2, 1994State Public Notification requested8 linked violations
September 28, 1992State Public Notification received2 linked violations
September 18, 1992State Formal Notice of Violation issued2 linked violations
September 18, 1992State Public Notification requested3 linked violations
August 17, 1992State Compliance achieved2 linked violations
January 21, 1992State Compliance achieved3 linked violations
May 7, 1991State Public Notification received1 linked violation
May 7, 1991State Public Notification received5 linked violations
April 17, 1991State Formal Notice of Violation issued1 linked violation
April 17, 1991State Public Notification requested2 linked violations
March 25, 1991State Compliance achieved2 linked violations
December 14, 1990State Formal Notice of Violation issued1 linked violation
November 26, 1990State Compliance achieved1 linked violation
February 12, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
January 30, 1989State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
January 23, 1989State Compliance achieved4 linked violations
January 23, 1989State Compliance achieved2 linked violations
November 28, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 28, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 18, 1988State Formal Notice of Violation issued1 linked violation
November 18, 1988State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 18, 1988State Public Notification requested1 linked violation
October 13, 1988State Compliance achieved2 linked violations
May 15, 1987State Compliance achieved1 linked violation
April 29, 1987State Formal Notice of Violation issued2 linked violations
December 15, 1986State Compliance achieved1 linked violation
November 16, 1986State Formal Notice of Violation issued1 linked violation

Common questions

Is DOON WATER SUPPLY required to publish a Consumer Confidence Report?: Yes. DOON WATER SUPPLY 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 DOON WATER SUPPLY’s next Consumer Confidence Report due?: DOON WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does DOON WATER SUPPLY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for DOON WATER SUPPLY.
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

DOON WATER SUPPLY

712-470-5913

DOON, IA 51235