EPA v. CITY OF ST MARIES - CAFO (CWA NPDES)

Case summary

On August 4, 2026, Region 10 issued an administrative order on consent to City of St. Maries for its Wastewater Treatment Plant (WWTP). City of St. Maries failed to reapply for their NPDES Permit and had effluent violations ranging over two years. City of St Maries WWTP is authorized the discharge to the St. Joe River between annually from November 1 to June 30. To return to compliance, the Respondent has reapplied for their National Pollutant Discharge Elimination System (NPDES) Permit and agreed to submit a plan to the EPA that outlines methods, phasing, and a timeline for investigating and addressing infiltration and inflow (I/I) throughout the City?s collection system. The estimated cost of implementing this injunctive relief is $250,000. Upon completion the facility will be in compliance with their permit. Respondent has also agreed to pay a penalty of $6,534.

Defendants (1)

• CITY OF ST MARIES WWTPNamed in complaintNamed in settlement

Facilities (1)

• ST MARIES, CITY OF - ST MARIES WWTP

  AT END OF SHEPARDS RD & E OF 1790 SHEPARDS RD, SAINT MARIES, ID, 83861

  Registry ID: 110011271541

Statutes cited

• CWA 301 — NPDES Discharge without a Permit
• CWA 301/402 — NPDES Permit Violations

Enforcement conclusions (1)

• CITY OF ST MARIES - CAFO (CWA NPDES)entered 2026-09-15

  Primary law: CWA

  Federal penalty: $6,534

Timeline (5 milestones)

• 2026-07-16Enforcement Action Data Entered
• 2026-09-15Final Order Issued
• 2026-09-15Complaint Filed/Proposed Order
• 2026-09-21NPDES Closed
• 2026-09-21Enforcement Action Closed