On March 16, 2026 EPA Region 6 issued an Administrative Order (AO) under its authority pursuant to Section 309 of the Clean Water Act to Harris County MUD No. 400 Wastewater Treatment Facility No. 2, in Houston, TX. The AO is issued in response to effluent violations of their E. Coli, Total Suspended Solids, and Total Ammonia Nitrogen limits. The AO requires the facility to; 1.) submit a list of specific actions taken to correct the violations and 2.) submit written certification to EPA that the violations have been corrected and the facility is compliant with its permit. The Respondent must respond to EPA Region 6 within thirty (30) days of the effective dated of the AO.