Built in 1975, WWTF No. 1 receives raw sewage from homes and businesses across nine Woodlands Municipal Utility Districts (MUDs): MUD 1, MUD 6, MUD 7, MUD 36, MUD 46, MUD 47, MUD 60, MUD 67, and Metro MUD. The average daily flow is approximately 3.5 million gallons per day.
The three WWTFs in The Woodlands are operated by the San Jacinto River Authority (SJRA) pursuant to contracts with the MUDs. Per the contracts, the MUDs approve the budgets and capital project plans and pay for maintenance, operations, and facility expansions through the sewer rate.