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Public water system record

Lyon-Sioux RWS-Rock Rapids

Serves an area of Lyon County, IA that includes Rock Rapids · 1,187 people served

Federal records show no health-based violations and no monitoring or reporting issues for Lyon-Sioux RWS-Rock Rapids in the last ten years.

  • IA6000800
  • ROCK RAPIDS
  • IA
  • 1,187 served

System profile

Source water Purchased groundwater
ZIP 51246
EPA system ID IA6000800

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Lyon-Sioux RWS-Rock Rapids buys its water from Lyon-Sioux RWS-Doon, Rock Rapids Municipal Water Works, Lyon-Sioux RWS-Boyden and Lyon-Sioux RWS-Big Sioux.
  • Record on file since 2007, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 2 unknown out of 1,564 service lines.

Check whether Lyon-Sioux RWS-Rock Rapids serves your address

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016, and no monitoring or reporting violations either.

Full record since 2007

EPA's records for Lyon-Sioux RWS-Rock Rapids go back to 2007. Before October 19, 2016 they list 1 health-based violation (1 resolved) and no monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 1 0

Most recent health-based violation before October 19, 2016: Total Coliform, began December 2007, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Dec 1, 2007 Resolved

Where the water comes from

Lyon-Sioux RWS-Rock Rapids buys its water from Lyon-Sioux RWS-Doon, Rock Rapids Municipal Water Works, Lyon-Sioux RWS-Boyden and Lyon-Sioux RWS-Big Sioux. It lists no wells or intakes of its own. 2 other community water systems buy water from Lyon-Sioux RWS-Rock Rapids.

Buys water from

Community systems that buy water from it

Annual water quality report

Lyon-Sioux RWS-Rock Rapids must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Iowa.

Certified drinking water labs by state EPA guidance for private wells