LARCHWOOD, IA · Lyon County
LARCHWOOD WATER SUPPLY Water System
Consumer Confidence Report status
LARCHWOOD WATER SUPPLY 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 LARCHWOOD WATER SUPPLY.
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)
- IA6050059
- System type
- Community Water System
- Population served
- 926
- Service connections
- 394
- Ownership
- local government
- Water source
- groundwater (wells)
LARCHWOOD WATER SUPPLY is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 926 people from groundwater.
As of August 1, 2026, its federal record holds 9 entries between 1986 and 2025, all of which EPA lists as closed.
Of the 9, 7 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 the Total Coliform Rules, the Consumer Confidence Rule, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2025 – October 2, 2025
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
July 1, 2013 – July 31, 2013
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 2010 – November 30, 2010
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
June 1, 2006 – June 30, 2006
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
September 1, 2001 – September 30, 2001
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
June 1, 2000 – June 30, 2000
ResolvedMaximum Contaminant Level Violation, Single Sample
Health-basedCombined Radium (-226 and -228)
July 1, 1991 – June 30, 1995
ResolvedMonitoring, Regular
—Nitrate
July 1, 1986 – June 30, 1989
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2025 – October 2, 2025 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2013 – July 31, 2013 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| November 1, 2010 – November 30, 2010 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| June 1, 2006 – June 30, 2006 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 2001 – September 30, 2001 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| June 1, 2000 – June 30, 2000 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 1991 – June 30, 1995 | Maximum Contaminant Level Violation, Single Sample | Combined Radium (-226 and -228) | Health-based | Resolved |
| July 1, 1986 – June 30, 1989 | Monitoring, Regular | Nitrate | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- October 2, 2025State Compliance achieved2 linked violations
- September 19, 2013State Formal Notice of Violation issued4 linked violations
- September 19, 2013State Public Notification requested3 linked violations
- September 19, 2013State Public Notification requested2 linked violations
- July 27, 2006State Formal Notice of Violation issued4 linked violations
- July 27, 2006State Public Notification requested4 linked violations
- September 9, 2004State Compliance achieved4 linked violations
- October 25, 2001State Public Notification requested5 linked violations
- October 25, 2001State Formal Notice of Violation issued3 linked violations
- August 7, 2000State Compliance achieved4 linked violations
- May 1, 2000State Compliance achieved1 linked violation
- November 20, 1995State Public Notification received4 linked violations
- December 28, 1990State Administrative/Compliance Order without penalty issued1 linked violation
- September 8, 1989State Compliance achieved2 linked violations
- August 25, 1989State Formal Notice of Violation issued3 linked violations
Common questions
Is LARCHWOOD WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. LARCHWOOD WATER SUPPLY 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 LARCHWOOD WATER SUPPLY’s next Consumer Confidence Report due?
- LARCHWOOD WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LARCHWOOD WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for LARCHWOOD WATER SUPPLY.
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
LARCHWOOD WATER SUPPLY
712-477-2366
LARCHWOOD, IA 51241