Toledo, OH Environmental Rules: Stormwater Management (2026)

Toledo is a regulated MS4 (Municipal Separate Storm Sewer System) community under the federal Clean Water Act, with Ohio EPA permit oversight. Construction sites over 1 acre require an NPDES Construction General Permit and a Stormwater Pollution Prevention Plan (SWPPP). Post-construction water quality controls (detention, infiltration, rain gardens) are required. The **Lake Erie Bill of Rights**, a charter amendment passed February 2019 granting the Lake Erie ecosystem legal rights to exist and flourish, was invalidated by U.S. District Court (Drewes Farms Partnership v. City of Toledo, 2020) as unconstitutionally vague and preempted by state law. However, Toledo's regulatory focus on reducing phosphorus runoff to prevent harmful algal blooms (HABs) in Western Lake Erie remains intense, following the 2014 drinking-water crisis when the Toledo water supply was tainted by microcystin toxin from Lake Erie algae. TMC Chapter 941 (Stormwater Management) enforces discharge prohibitions, including no dumping of motor oil, grass clippings, or paint into storm drains.