MO HB1711

Establishes a 90-day notice requirement for filing damage claims against sewer districts, requiring written notice to the board of trustees specifying the location, time, character, and circumstances of damages

Sets a 3-year statute of limitations for damage actions against sewer districts, with a 10-year limit for claims alleging negligent, defective, or dangerous design or construction of sewer facilities

Requires plaintiffs to prove sewer facility design claims did not comply with generally accepted design standards at the time of construction, and requires proof of affirmative acts by the sewer district for maintenance and operation failure claims

Provides complete defense to inverse condemnation claims if the sewer district previously offered the means to correct the alleged defect and the plaintiff refused

Defines procedures for proving inverse condemnation damages, including requirements for licensed appraisal testimony, fair market value calculations for permanent takings, and rental value calculations for temporary takings