CEDAR RAPIDS, IA · Linn County

OAK VALLEY Water System

Current status

3 items on record are open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

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

System facts

System ID (PWSID): IA5784311
System type: Community Water System
Population served: 100
Service connections: 40
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
March 6, 2025 – August 4, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
October 22, 2024 – August 4, 2025
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
June 16, 2024 – June 27, 2024
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 1, 2022 – November 9, 2023
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2022 – July 3, 2023
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 1, 2019
Unaddressed
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2015 – July 31, 2015
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2014 – September 30, 2020
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2014 – September 30, 2020
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
April 1, 2014 – July 2, 2014
Resolved
Monitoring, Regular
—
Nitrate
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 2014 – January 31, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 1, 2014 – July 2, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 1, 2013
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2013
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
November 24, 2012 – September 17, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – November 1, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2012 – June 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2000 – May 31, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2000 – April 30, 2000
Resolved
Monitoring, Regular
—
Nitrate
April 1, 1985 – June 30, 1985
Archived
Monitoring, Regular
—
Arsenic
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Chromium
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Barium
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Selenium
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Mercury
September 30, 1980 – September 29, 1983
Archived

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
March 6, 2025 – August 4, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 22, 2024 – August 4, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
June 16, 2024 – June 27, 2024	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
December 1, 2022 – November 9, 2023	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2022 – July 3, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 1, 2019	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
July 1, 2015 – July 31, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2014 – September 30, 2020	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 1, 2014 – September 30, 2020	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
April 1, 2014 – July 2, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2014 – January 31, 2014	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2014 – July 2, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
August 1, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
July 1, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
November 24, 2012 – September 17, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2012 – November 1, 2012	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2000 – May 31, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2000 – April 30, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 1985 – June 30, 1985	Monitoring, Regular	Nitrate	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Arsenic	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Chromium	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Barium	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Selenium	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Mercury	—	Archived

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

August 4, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 4, 2025State Compliance achieved1 linked violation
August 4, 2025State Compliance achieved1 linked violation
August 4, 2025State Public Notification received1 linked violation
August 4, 2025State Public Notification received1 linked violation
June 30, 2025State Compliance achieved1 linked violation
April 17, 2025State Formal Notice of Violation issued2 linked violations
December 5, 2024State Violation/Reminder Notice7 linked violations
December 2, 2024State Formal Notice of Violation issued9 linked violations
August 21, 2024State Public Notification requested1 linked violation
July 18, 2024State Formal Notice of Violation issued2 linked violations
July 18, 2024State Public Notification requested2 linked violations
June 27, 2024State Compliance achieved8 linked violations
November 9, 2023State Compliance achieved2 linked violations
February 3, 2023State Formal Notice of Violation issued3 linked violations
October 19, 2022State Formal Notice of Violation issued3 linked violations
October 19, 2022State Formal Notice of Violation issued3 linked violations
August 18, 2022State Formal Notice of Violation issued3 linked violations
October 11, 2021State Public Notification requested2 linked violations
July 12, 2021State Public Notification requested2 linked violations
June 23, 2017State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 11, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 11, 2016State Public Notification requested1 linked violation
November 17, 2015State Public Notification received1 linked violation
August 27, 2015State Compliance achieved1 linked violation
August 19, 2015State Formal Notice of Violation issued1 linked violation
August 19, 2015State Public Notification requested1 linked violation
July 1, 2015State Public Notification received1 linked violation
July 1, 2015State Compliance achieved1 linked violation
November 19, 2014State Violation/Reminder Notice1 linked violation
September 30, 2014State Compliance achieved1 linked violation
August 18, 2014State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 18, 2014State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 17, 2014State Formal Notice of Violation issued1 linked violation
July 17, 2014State Public Notification requested1 linked violation
July 2, 2014State Public Notification received4 linked violations
July 2, 2014State Compliance achieved1 linked violation
July 2, 2014State Compliance achieved1 linked violation
July 2, 2014State Compliance achieved1 linked violation
July 2, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 2, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 2, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
May 14, 2014State Intentional no-action1 linked violation
May 14, 2014State Formal Notice of Violation issued1 linked violation
May 14, 2014State Violation/Reminder Notice1 linked violation
March 3, 2014State Public Notification received1 linked violation
February 24, 2014State Compliance achieved1 linked violation
February 18, 2014State Public Notification requested1 linked violation
February 18, 2014State Formal Notice of Violation issued1 linked violation
January 21, 2014State Formal Notice of Violation issued1 linked violation
January 21, 2014State Violation/Reminder Notice1 linked violation
January 21, 2014State Intentional no-action1 linked violation
September 19, 2013State Violation/Reminder Notice1 linked violation
September 19, 2013State Intentional no-action1 linked violation
September 19, 2013State Formal Notice of Violation issued1 linked violation
September 17, 2013State Compliance achieved3 linked violations
September 17, 2013State Public Notification received2 linked violations
September 17, 2013State Compliance achieved1 linked violation
September 17, 2013State Public Notification received1 linked violation
September 17, 2013State Compliance achieved1 linked violation
September 17, 2013State Public Notification received1 linked violation
September 3, 2013State Formal Notice of Violation issued1 linked violation
September 3, 2013State Public Notification requested1 linked violation
August 20, 2013State Formal Notice of Violation issued1 linked violation
August 20, 2013State Intentional no-action1 linked violation
August 20, 2013State Violation/Reminder Notice1 linked violation
August 20, 2013State Intentional no-action1 linked violation
August 20, 2013State Violation/Reminder Notice1 linked violation
August 20, 2013State Formal Notice of Violation issued1 linked violation
May 2, 2013State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 18, 2013State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
April 18, 2013State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
March 8, 2013State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 13, 2013State Violation/Reminder Notice1 linked violation
February 13, 2013State Formal Notice of Violation issued1 linked violation
February 13, 2013State Intentional no-action1 linked violation
January 30, 2013State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
January 30, 2013State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 1, 2012State Public Notification received1 linked violation
November 1, 2012State Public Notification received1 linked violation
October 23, 2012State Formal Notice of Violation issued1 linked violation
October 23, 2012State Violation/Reminder Notice1 linked violation
October 23, 2012State Intentional no-action1 linked violation
October 16, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 20, 2012State Public Notification requested1 linked violation
August 20, 2012State Formal Notice of Violation issued2 linked violations
August 20, 2012State Public Notification requested1 linked violation
August 20, 2012State Compliance achieved1 linked violation
August 6, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 27, 2012State Public Notification requested1 linked violation
June 22, 2012State Formal Notice of Violation issued2 linked violations
June 22, 2012State Public Notification requested2 linked violations
May 10, 2012State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 23, 2012State Formal Notice of Violation issued3 linked violations
January 23, 2012State Public Notification requested6 linked violations
May 25, 2006State Formal Notice of Violation issued9 linked violations
May 25, 2006State Public Notification requested9 linked violations
June 23, 2000State Public Notification requested7 linked violations
November 12, 1999State Compliance achieved10 linked violations
April 23, 1999State Formal Notice of Violation issued4 linked violations
August 5, 1998State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 5, 1998State Public Notification received2 linked violations
July 21, 1998State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 3, 1997State Compliance achieved3 linked violations
July 8, 1997State Bilateral Compliance Agreement signed2 linked violations
July 8, 1997State Public Notification requested3 linked violations
July 8, 1997State Formal Notice of Violation issued1 linked violation
July 8, 1997State Bilateral Compliance Agreement signed1 linked violation
July 8, 1997State Formal Notice of Violation issued2 linked violations
June 6, 1996State Compliance achieved5 linked violations
February 18, 1994State Formal Notice of Violation issued6 linked violations
June 17, 1993State Compliance achieved2 linked violations
June 11, 1993State Formal Notice of Violation issued2 linked violations
June 11, 1993State Public Notification requested2 linked violations
June 3, 1993State Public Notification received2 linked violations
August 20, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
August 20, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 19, 1990State Compliance achieved1 linked violation

Contact

OAK VALLEY

319-310-3227

CEDAR RAPIDS, IA 52408