PLAINWELL WWTP

NPDES ID: MI0020494

T — SNC: Compliance schedule reporting violation

The facility was more than 30 days late reporting progress on its compliance schedule.

Violations

March 31, 2026

Coliform, fecal general

30% over limit

Discharged 260 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)

DMR, Limited - Numeric Violation

September 30, 2025

BOD, carbonaceous [5 day, 20 C]

39% over limit

Discharged 41.62 mg/L against a permitted limit of 30 mg/L (DAILY MX)

DMR, Limited - Numeric Violation

First flagged

April 14, 2026 (3 months ago)

Last confirmed

July 13, 2026 (23 days ago)