MARATHON, IA · Buena Vista County
MARATHON LIGHT & WATER DEPARTMENT Water System
Consumer Confidence Report status
MARATHON LIGHT & WATER DEPARTMENT 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 MARATHON LIGHT & WATER DEPARTMENT.
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)
- IA1150030
- System type
- Community Water System
- Population served
- 230
- Service connections
- 120
- Ownership
- local government
- Water source
- groundwater (wells)
MARATHON LIGHT & WATER DEPARTMENT is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 230 people from groundwater.
As of August 1, 2026, its federal record holds 5 entries between 1985 and 2007, all of which EPA lists as closed. Nothing has been added since 2007.
Of the 5, 3 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 and the Lead and Copper Rule.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2007 – March 31, 2007
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2006 – December 31, 2006
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
April 1, 1988 – June 28, 1988
ResolvedMonitoring, Regular
—Barium
July 1, 1985 – June 28, 1988
ResolvedMonitoring, Regular
—Mercury
July 1, 1985 – June 28, 1988
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2007 – March 31, 2007 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| October 1, 2006 – December 31, 2006 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| April 1, 1988 – June 28, 1988 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| July 1, 1985 – June 28, 1988 | Monitoring, Regular | Barium | — | Resolved |
| July 1, 1985 – June 28, 1988 | Monitoring, Regular | Mercury | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- December 6, 2006State Formal Notice of Violation issued4 linked violations
- September 7, 2006State Public Notification requested5 linked violations
- January 30, 1997State Compliance achieved1 linked violation
- January 24, 1997State Formal Notice of Violation issued1 linked violation
- May 29, 1996State Compliance achieved2 linked violations
- May 29, 1996State Compliance achieved3 linked violations
- March 12, 1993State Public Notification requested3 linked violations
- January 6, 1993State Public Notification received2 linked violations
- December 22, 1992State Formal Notice of Violation issued3 linked violations
- December 22, 1992State Public Notification requested3 linked violations
- December 22, 1992State Public Notification requested4 linked violations
- October 27, 1992State Formal Notice of Violation issued4 linked violations
- October 26, 1990State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- October 12, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- October 12, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- September 25, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- September 25, 1990State Compliance achieved1 linked violation
- June 28, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- June 28, 1988State Compliance achieved1 linked violation
- June 28, 1988State Compliance achieved1 linked violation
- June 28, 1988State Compliance achieved1 linked violation
- February 5, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record
Common questions
Is MARATHON LIGHT & WATER DEPARTMENT required to publish a Consumer Confidence Report?
- Yes. MARATHON LIGHT & WATER DEPARTMENT 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 MARATHON LIGHT & WATER DEPARTMENT’s next Consumer Confidence Report due?
- MARATHON LIGHT & WATER DEPARTMENT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MARATHON LIGHT & WATER DEPARTMENT have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MARATHON LIGHT & WATER DEPARTMENT.
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
MARATHON LIGHT & WATER DEPARTMENT
712-289-2261
MARATHON, IA 50565