Columbia Sanitary sewer discharge prohibitions ordinance (§ 22-215.1)
Chapter 22: Public Works and Improvements · Article VI. Sewers and Sewage Disposal
In short: You may not send stormwater, surface water, groundwater, roof runoff, foundation drain water (interior or exterior), cooling water, or unpolluted industrial process water into a sanitary sewer.
Our plain-English summary, not the official text or legal advice. The ordinance below is what counts.
It shall be unlawful for any person to discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage including interior and exterior foundation drains, cooling water, or unpolluted industrial process waters to any sanitary sewer.
Official source: City of Columbia official Code of Ordinances (online): look up Sec. 22-215.1
Text from Supplement 139 (September 3, 2026).
Last checked November 1, 2026. The city's official copy controls; this page is a reading copy, not legal advice.