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Los Angeles County Sanitation Districts

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Stormwater, Groundwater and Other Water Discharges

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Stormwater, Groundwater, and Other Discharges (Guidelines)

Fact Sheet
Letter of Attestation (Permittees)
Letter of Attestation (Non-Permittees)
Submittal Checklist
I nformation Webinar - March 19, 2025
Questions and Answers

For more information on the Sanitation Districts' requirements for the discharge of stormwater, groundwater, and other water discharges, contact the Industrial Waste Section at (562) 551-7115, or by email at IndustryStormwater@lacsd.org.