Tag Archives: Bypass

EPA Loses Another Battle in the War Over Guidance: The Eighth Circuit Vacates EPA Policies on Mixing Zones and Bypasses

On Monday, EPA lost another battle in the war over guidance.  In Iowa League of Cities v. EPA, the 8th Circuit Court of Appeals vacated two letters that EPA had sent to Senator Charles Grassley concerning biological mixing zones and bypass of secondary treatment units at POTWs (also referred to as “blending”, because the POTWs blend wastewater that has not be subject to biological secondary treatment with wastewater that has,… More