By: Romero H.B. No. 5493
 
 
 
A BILL TO BE ENTITLED
 
AN ACT
  relating to the diversion and discharge of water for desalination.
         BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF TEXAS:
         SECTION 1.  Chapter 18, Water Code, is amended by adding
  Section 18.006 to read as follows:
         Sec. 18.006.  DIVERSION AND DISCHARGE OF WATER FOR
  DESALINATION STUDY. (a) The commission shall conduct a joint study
  with the Parks and Wildlife Department and the General Land Office
  to determine the appropriateness of diversion of water from a bay or
  an arm of the Gulf of America for desalination, and identify
  specific factors and tolerances that are appropriate for the
  discharge of waste from desalination of treated marine seawater or
  brackish water in a bay or an arm of the Gulf of America, taking into
  account the need to protect marine organisms, local industries that
  depend on these coastal resources, and the overall ecological and
  health of the bays. The study shall include, but is not limited to,
  the following factors:
               (1)  acceptable brine concentrate salinity;
               (2)  toxicity of brine concentrate;
               (3)  ambient temperature of brine concentrate;
               (4)  velocity within the mixing zone;
               (5)  cumulative volume of discharge relative to bay
  circulation and exchange;
               (6)  location factors for discharges to minimize:
                     (i)  potential detrimental impacts on marine
  organisms, and
                     (ii)  potential impairment of benefits to marine
  organisms from freshwater inflows.
         (b)  Not later than September 1, 2026, the commission shall
  complete a report on the results of the study.  The report must
  include, if diversion is determined to be appropriate in any bay or
  arm of the Gulf of America, recommended tolerances by location for
  each factor listed in subsection (a), any other factors necessary
  to protect marine organisms and local industry dependent on those
  resources in a specific location from impacts of such diversions
  and discharges, and a standardized modeling application for permit
  applications.
         (c)  Not later than September 1, 2027, the commission by rule
  shall:
         (1)  determine if diversion for desalination is allowable in
  a bay or an arm of the Gulf of Mexico and,
         (2)  designate appropriate locations, factors, and
  tolerances for discharge of waste resulting from the desalination
  of treated marine seawater or brackish water in a bay or an arm of
  the Gulf of America under this chapter and Chapter 26; and
         (3)  designate a standardized modeling approach and
  application for permit applications for desalination with a
  proposed discharge point located in a bay or an arm of the Gulf of
  America under this chapter or Chapter 26.
         (d)  Until the commission adopts rules under Subsection (b),
  a person must consult the Parks and Wildlife Department and the
  General Land Office regarding the point or points from which a
  facility the person proposes to construct may divert or discharge
  marine seawater or brackish water before submitting an application
  for a permit for the facility under this chapter, Chapter 11, or
  Chapter 26 or before beginning construction of the facility if the
  diversion or discharge is proposed for a bay or arm of the Gulf of
  America.  An accurate summary of the results of the consultation
  process must be included as part of the application and considered
  by the commission in its decision process.
         SECTION 2.  This Act takes effect September 1, 2025.