ROCK RAPIDS, IA · Lyon County
LYON-SIOUX RWS-ROCK RAPIDS Water System
Consumer Confidence Report status
LYON-SIOUX RWS-ROCK RAPIDS 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 LYON-SIOUX RWS-ROCK RAPIDS.
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)
- IA6000800
- System type
- Community Water System
- Population served
- 1,187
- Service connections
- 475
- Ownership
- privately owned
- Water source
- groundwater (wells)
LYON-SIOUX RWS-ROCK RAPIDS is one of 403 community water systems in Iowa in the 501 to 3,300 people size category, serving 1,187 people from groundwater.
As of August 1, 2026, EPA's published records contain no violations for this system.
Violation history
No violations on record for this system.
Enforcement actions
- August 1, 1990State Public Notification received1 linked violation
- July 24, 1990State Formal Notice of Violation issued1 linked violation
- July 10, 1990State Compliance achieved1 linked violation
- December 11, 1989State Public Notification requested3 linked violations
Common questions
Is LYON-SIOUX RWS-ROCK RAPIDS required to publish a Consumer Confidence Report?
- Yes. LYON-SIOUX RWS-ROCK RAPIDS 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 LYON-SIOUX RWS-ROCK RAPIDS’s next Consumer Confidence Report due?
- LYON-SIOUX RWS-ROCK RAPIDS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LYON-SIOUX RWS-ROCK RAPIDS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for LYON-SIOUX RWS-ROCK RAPIDS.
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
LYON-SIOUX RURAL WATER SYSTEM
712-472-3755
ROCK RAPIDS, IA 51246