Volume Treated Data

MMSD has captured and cleaned 98.4% of all the water and wastewater that's entered the regional sewer system since we started operating the Deep Tunnel in 1994. The goal nationally is an 85% capture and clean rate for the more than 700 cities with sewer systems like ours.


How are we doing in 2018 ?

Volume Treated measures how much water and wastewater MMSD captures and treats by year versus the amount that the District releases from its sewers to area waterways untreated during heavy rain storms to prevent basement backups.

Volume treated

District Gallons Treated: 3,211,000,000

District Gallons Overflowed: 0

District Total Gallons: 3,211,000,000

District % Treated: 100.00%

Captured & Cleaned