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Columbia Water and Light: backflow testing rules
Serves Columbia, MO. Every point below comes from Columbia Water and Light's own pages, linked; check your notice for your own deadline.
Who must test
- Page ties the ordinance to customers with irrigation systems. Source.
How the report is filed
- Results by email (address obfuscated on the page) or mail to Columbia Water & Light, P.O. Box 6015, Columbia, MO 65205. No portal. Source.
Tester registration
- No utility registration or insurance requirement is stated. Source.
Approved testers
- Utility points to the Missouri DNR list (select Boone county). Source.
Program
- Ordinance Chapter 27, section 57 requires backflow devices for irrigation customers. Source.
Read October 6, 2026. Program page: como.gov.
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