MARENGO, IA · Iowa County

IOWA VALLEY ESTATES 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): IA4800634
System type: Community Water System
Population served: 46
Service connections: 25
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
September 1, 2023 – September 30, 2023
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 2023 – August 31, 2023
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2023 – July 31, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 1985 – September 30, 1986
Archived
Monitoring, Regular
—
Nitrate
January 1, 1985 – June 30, 1985
Archived
Monitoring, Regular
—
Mercury
October 1, 1983 – September 30, 1984
Archived
Monitoring, Regular
—
Nitrate
October 1, 1983 – September 30, 1984
Archived
Monitoring, Regular
—
Selenium
October 1, 1983 – September 30, 1984
Archived
Monitoring, Regular
—
Fluoride
October 1, 1983 – September 30, 1984
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1983 – September 30, 1984
Archived
Monitoring, Regular
—
Arsenic
October 1, 1983 – September 30, 1984
Archived
Monitoring, Regular
—
Chromium
October 1, 1983 – September 30, 1984
Archived
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
Monitoring, Regular
—
Barium
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Chromium
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Mercury
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Nitrate
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
September 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
August 1, 2023 – August 31, 2023	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
July 1, 2023 – July 31, 2023	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
October 1, 1985 – September 30, 1986	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
January 1, 1985 – June 30, 1985	Monitoring, Regular	Nitrate	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Mercury	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Nitrate	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Selenium	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Fluoride	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Arsenic	—	Archived
October 1, 1983 – September 30, 1984	Monitoring, Regular	Chromium	—	Archived
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
September 30, 1980 – September 29, 1983	Monitoring, Regular	Barium	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Chromium	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Mercury	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Nitrate	—	Archived

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

Enforcement actions

March 4, 2024State Compliance achieved331 linked violations
September 30, 1986State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 30, 1984Federal issued Formal Notice of Violation10 linked violations
March 1, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
February 18, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
February 16, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
February 5, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
January 21, 1982State Unresolved3 linked violations

Contact

IOWA VALLEY ESTATES

319-642-5646

MARENGO, IA 52301