Pretreatment Program


​​Blu​e Thumb Award​

Blue Thumb Logo

The Blue Thumb Award recognizes Significant Industrial Users (SIUs) that discharge into the Dallas Water Utilities Publicly Owned Treatment Works (POTWs) and demonstrate outstanding compliance with the Pretreatment Program.  This award program started in 1987 when DWU acknowledged the need to recognize the industries that are helping to protect human health and enhance the environment by protecting the water quality of the Trinity River.

SIUs who qualify for an award in a given pretreatment year (July 1st through June 30th) must meet the following requirements:

  • In compliance with discharge limit requirements
  • In compliance with all reporting requirements, and
  • Permitted for the entire pretreatment year (July 1st through June 30th).

The 2017 Blue Thumb Award winners  are displayed on a plaque at the PALS Main Office.