Metropolitan St. Louis Sewer District Lemay WWTP

St. Louis, MO · St. Louis County · Publicly Owned Treatment Works

Average flow: 97.5 MGD

Design flow: —

NPDES permit: 3601925318; ADC

Permit expires: December 2022

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Clarifiers

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Biogas silos

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Screening

unit process

Disinfection, UV

unit process

Biosolids Incineration

unit process

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Compliance snapshot (last 3 years)

Total violations: 0

Effluent violations: 0

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

2 verified contacts for Metropolitan St. Louis Sewer District Lemay WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Metropolitan St. Louis Sewer District Lemay WWTP — plus full compliance history and discharge data.

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Data sourced from public EPA / NPDES records and Klarifi analysis. Last updated May 2025.

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