Simi Valley Water Quality Control Plant

Tentative Waste Discharge Requirements and National Pollutant Discharge Elimination System Permit for City of Simi Valley, Simi Valley Water Quality Control Plant (NPDES No. CA0055221,
CI No. 3021)

Documents Posted on March 20, 2026

Permit Information

Staff Contact:
Don Tsai | (213) 576-6681

NPDES No. CA0055221

CI No. 3021

Scheduled for May 28, 2026 Board meeting

Written comments due by 5:00 pm on April 20, 2026

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(Page last updated 4/3/26)

Water is a precious resource in California, and maintaining its quality is of utmost importance to safeguard the health of the public and the environment.

Simi Valley Water Quality Control Plant

Tentative Waste Discharge Requirements and National Pollutant Discharge Elimination System Permit for City of Simi Valley, Simi Valley Water Quality Control Plant (NPDES No. CA0055221, CI No. 3021)

Documents Posted on March 20, 2026

Permit Information

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Tentative Waste Discharge Requirements and National Pollutant Discharge Elimination System Permit for City of Simi Valley, Simi Valley Water Quality Control Plant (NPDES No. CA0055221,
CI No. 3021)