BELMONT & SOUTHPORT ADVANCED WASTEWATER TREATMENT PLANTS

NPDES ID: IN0023183

S — SNC: Compliance schedule violation

The facility missed a deadline in its compliance schedule by more than 90 days.

This quarter: 1 single-event violation.

Violations

December 31, 2025

Phosphorus, total [as P]

50% over limit

Discharged 1.5 mg/L against a permitted limit of 1 mg/L (MO AVG)

DMR, Limited - Numeric Violation

Toxicity [chronic], Ceriodaphnia dubia

127% over limit

Discharged 2.5 toxic against a permitted limit of 1.1 toxic (MAXIMUM)

DMR, Limited - Numeric Violation

July 31, 2024

Precipitation, monthly accumulation

0% over limit

Discharged 0.19838701 in/d against a permitted limit of 0 in/d (MO TOTAL)

DMR, Monitor Only - Overdue

First flagged

April 14, 2026 (3 months ago)

Last confirmed

July 13, 2026 (7 days ago)