EPA v. Harris County MUD #358

Case summary

On December 16, 2025, EPA Region 6 issued an Administrative Order (AO) under its authority pursuant to Section 309 of the Clean Water Act to Harris County MUD #358 (Fairfield Village Regional) WWTF. The AO was issued in response to effluent violations of permit 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. Texas Commission on Environmental Quality (TCEQ) has primacy for this facility. Per the Memorandum of Agreement between TCEQ and EPA, TCEQ informed EPA that is would not be able to complete the enforcement action by the established time frame. TCEQ and EPA have consulted regarding EPA issuing this enforcement action.

Defendants (1)

• Harris County MUD #358Named in settlement

Facilities (2)

• FAIRFIELD VILLAGE REGIONAL WWTP

  19855 CYPRESSWOOD DR, CYPRESS, TX, 77433

  Registry ID: 110009015001

• FAIRFIELD VILLAGE REGIONAL WWTP

  19855 CYPRESSWOOD DR, CYPRESS, TX, 77433

  Registry ID: 110009015001

Statutes cited

• CWA 301/402 — NPDES Permit Violations

Enforcement conclusions (1)

• Harris County MUD #358entered 2025-12-16

  Primary law: CWA

Timeline (2 milestones)

• 2025-12-08Enforcement Action Data Entered
• 2025-12-16Final Order Issued