OXFORD, IA · Johnson County

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

System facts

System ID (PWSID): IA5200810
System type: Community Water System
Population served: 52
Service connections: 20
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
February 4, 2025 – April 28, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – January 22, 2025
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2024 – July 31, 2024
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2024 – July 31, 2024
Archived
Variance/Exemption/Other Compliance
—
No contaminant on record
May 1, 2011 – May 31, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2010 – October 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2010 – August 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2010 – July 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2007 – August 31, 2007
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – March 14, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2006 – March 31, 2006
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1992 – September 30, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1988 – November 30, 1988
Resolved
Monitoring, Regular
—
Arsenic
July 1, 1986 – June 30, 1989
Resolved
Monitoring, Regular
—
Fluoride
July 1, 1986 – June 30, 1989
Resolved
Monitoring, Regular
—
Chromium
July 1, 1986 – June 30, 1989
Resolved
Monitoring, Regular
—
Cadmium
July 1, 1986 – June 30, 1989
Resolved
Monitoring, Regular
—
Barium
July 1, 1986 – June 30, 1989
Resolved
Monitoring, Regular
—
Mercury
July 1, 1986 – June 30, 1989
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
September 30, 1980 – September 29, 1983
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
February 4, 2025 – April 28, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2024 – January 22, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2024 – July 31, 2024	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2024 – July 31, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
May 1, 2011 – May 31, 2011	Variance/Exemption/Other Compliance	—	—	Resolved
December 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2010 – October 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2010 – August 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2010 – July 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2007 – August 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2006 – March 14, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
March 1, 2006 – March 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 1992 – September 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 1988 – November 30, 1988	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1986 – June 30, 1989	Monitoring, Regular	Arsenic	—	Resolved
July 1, 1986 – June 30, 1989	Monitoring, Regular	Fluoride	—	Resolved
July 1, 1986 – June 30, 1989	Monitoring, Regular	Chromium	—	Resolved
July 1, 1986 – June 30, 1989	Monitoring, Regular	Cadmium	—	Resolved
July 1, 1986 – June 30, 1989	Monitoring, Regular	Barium	—	Resolved
July 1, 1986 – June 30, 1989	Monitoring, Regular	Mercury	—	Resolved
September 30, 1980 – September 29, 1983	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

April 28, 2025State Compliance achieved1 linked violation
April 28, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
April 28, 2025State Public Notification received1 linked violation
April 28, 2025State Compliance achieved1 linked violation
April 28, 2025State Public Notification received1 linked violation
April 28, 2025State Public Notification received1 linked violation
April 28, 2025State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 28, 2025State Public Notification received1 linked violation
April 24, 2025State Formal Notice of Violation issued1 linked violation
April 24, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
April 24, 2025State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 24, 2025State Violation/Reminder Notice1 linked violation
April 24, 2025State Violation/Reminder Notice1 linked violation
April 24, 2025State Formal Notice of Violation issued1 linked violation
January 22, 2025State Compliance achieved1 linked violation
November 21, 2024State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 21, 2024State Compliance achieved1 linked violation
November 21, 2024State Compliance achieved1 linked violation
October 31, 2024State Public Notification requested2 linked violations
October 31, 2024State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 31, 2024State Formal Notice of Violation issued2 linked violations
October 31, 2024State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
October 9, 2024State Formal Notice of Violation issued1 linked violation
September 19, 2024State Public Notification requested4 linked violations
September 4, 2007State Violation/Reminder Notice2 linked violations
April 4, 2006State Compliance achieved2 linked violations
October 7, 2004State Public Notification requested6 linked violations
September 16, 2000State Compliance achieved6 linked violations
March 28, 2000State Formal Notice of Violation issued8 linked violations
July 10, 1995State Compliance achieved10 linked violations
July 10, 1995State Compliance achieved9 linked violations
July 10, 1995State Compliance achieved2 linked violations
February 9, 1994State Formal Notice of Violation issued3 linked violations
February 9, 1994State Public Notification requested4 linked violations
November 18, 1993State Formal Notice of Violation issued4 linked violations
September 30, 1992State Formal Notice of Violation issued2 linked violations
September 30, 1992State Public Notification requested2 linked violations
May 20, 1992State Formal Notice of Violation issued2 linked violations
May 20, 1992State Public Notification requested2 linked violations
October 30, 1989State Administrative/Compliance Order without penalty issued1 linked violation
August 14, 1989State Compliance achieved62 linked violations
August 14, 1989State Compliance achieved1 linked violation
August 14, 1989State Compliance achieved8 linked violations
August 14, 1989State Compliance achieved1 linked violation
March 17, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 22, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 1, 1986State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 1, 1986State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 1, 1986State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
January 26, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Contact

TIMBERLAKE ESTATES HOA

319-936-4189

OXFORD, IA 52322