WYOMING, IA · Jones County

ONSLOW WATER SUPPLY 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): IA5358096
System type: Community Water System
Population served: 201
Service connections: 110
Ownership: local government
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2017 – October 27, 2017
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2002 – July 31, 2002
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 1989 – September 26, 1990
Resolved
Monitoring, Regular
—
Cadmium
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Arsenic
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Barium
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Chromium
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Fluoride
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Mercury
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Nitrate
April 1, 1987 – March 31, 1990
Resolved
Monitoring, Regular
—
Selenium
April 1, 1987 – March 31, 1990
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 1986 – March 25, 1987
Resolved
Monitoring, Regular
—
Selenium
July 1, 1985 – June 30, 1988
Resolved
Monitoring, Regular
—
Fluoride
July 1, 1985 – June 30, 1988
Resolved
Monitoring, Regular
—
Chromium
July 1, 1985 – June 30, 1988
Resolved
Monitoring, Regular
—
Arsenic
July 1, 1985 – June 30, 1988
Resolved
Monitoring, Regular
—
Barium
July 1, 1985 – June 30, 1988
Resolved
Monitoring, Regular
—
Cadmium
July 1, 1985 – June 30, 1988
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2017 – October 27, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2002 – July 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1989 – September 26, 1990	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Cadmium	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Arsenic	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Barium	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Chromium	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Fluoride	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Mercury	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Nitrate	—	Resolved
April 1, 1987 – March 31, 1990	Monitoring, Regular	Selenium	—	Resolved
October 1, 1986 – March 25, 1987	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Selenium	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Fluoride	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Chromium	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Arsenic	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Barium	—	Resolved
July 1, 1985 – June 30, 1988	Monitoring, Regular	Cadmium	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 20, 2023State Public Notification requested4 linked violations
August 28, 2020State Public Notification received3 linked violations
October 3, 2019State Compliance achieved3 linked violations
August 7, 2017State Public Notification requested27 linked violations
January 16, 2015State Public Notification received4 linked violations
November 18, 2014State Formal Notice of Violation issued2 linked violations
October 3, 2002State Compliance achieved9 linked violations
August 22, 2002State Formal Notice of Violation issued8 linked violations
May 23, 2001State Compliance achieved4 linked violations
October 26, 2000State Compliance achieved4 linked violations
December 23, 1996State Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 23, 1996State Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 9, 1996State Compliance achieved1 linked violation
December 9, 1996State Compliance achieved21 linked violations
November 15, 1996State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 15, 1996State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 15, 1996State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
November 15, 1996State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
November 15, 1996State Formal Notice of Violation issued1 linked violation
November 15, 1996State Public Notification requested1 linked violation
October 31, 1990State Public Notification received3 linked violations
October 1, 1990State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
October 1, 1990State Administrative/Compliance Order without penalty issued1 linked violation
October 1, 1990State Administrative/Compliance Order without penalty issued1 linked violation
October 1, 1990State Administrative/Compliance Order without penalty issued1 linked violation
October 1, 1990State Administrative/Compliance Order without penalty issued2 linked violations
September 26, 1990State Compliance achieved1 linked violation
September 26, 1990State Compliance achieved1 linked violation
September 26, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 26, 1990State Compliance achieved1 linked violation
September 26, 1990State Compliance achieved2 linked violations
July 24, 1990State Formal Notice of Violation issued1 linked violation
June 12, 1990State Compliance achieved1 linked violation
June 19, 1989State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
May 30, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 11, 1988State Compliance achieved1 linked violation
January 2, 1988State Formal Notice of Violation issued1 linked violation
October 15, 1987State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 25, 1987State Compliance achieved5 linked violations
March 25, 1987State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 25, 1987State Compliance achieved1 linked violation
March 25, 1987State Compliance achieved2 linked violations
February 16, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Contact

ONSLOW WATER SUPPLY

319-821-0124

WYOMING, IA 52362