Water Use Rules in St. Louis, MO (2026)
3 verified water use rules for St. Louis, Missouri, sourced directly from the municipal code and official government pages.
Verified from official government sources
Lawn Watering Restrictions
St. Louis has no day-of-week or time-of-day lawn watering restrictions. The city draws abundant supply from the Mississippi and Missouri rivers via the Chain of Rocks plant, so STL Water customers may irrigate without seasonal caps.
Lawn Watering Rules
Few RestrictionsRecycled Water Rules
St. Louis does not operate a municipal recycled-water network. Greywater reuse on private property is governed by Missouri plumbing code and the city Plumbing Division, and rainwater harvesting for irrigation is allowed under MSD Project Clear stormwater incentives.
Recycled & Greywater Use
Few RestrictionsLeak Reporting Duty
St. Louis Water Division requires customers to report visible leaks promptly and maintain private service lines from the curb stop to the meter. MSD Project Clear handles sewer leaks and the lateral repair program funded by a citywide fee.