SB-181 Compliance

Senate Bill 181, passed by the 82nd Texas Legislature, required the TWDB and the TCEQ, in consultation with the Water Conservation Advisory County, to develop a water use and conservation calculation methodology. The methodology serves as a guide for preparation of water use reports, water conservation plans, and reports on water conservation efforts. Municipalities and water utilities are to follow the methodology in their efforts to develop water conservation plans and prepare annual reports and five-year implementation reports. The methodology defines:

  • A standard method of calculating total water use by a public water system, including water billed and nonrevenue water used, and a method of calculating water use for each sector of water users served by a municipality or water utility
  • A standard method of calculating total water use by a public water system in gallons per capita per day
  • A standard method of classifying water users within sectors
  • A standard method of calculating water use in the residential sector that includes both single-family and multifamily residences, in gallons per capita per day
  • A standard method of calculating water use in the industrial, agricultural, commercial,
    and institutional sectors that is not dependent on a system’s population or the number of customers served by a water utility
  • Guidelines on the use of service populations by a public water system in developing a per-capita-base method of calculation, including guidance on the use of permanent and temporary populations in making calculations.

The Texas Water Development Board and the Texas Commission on Environmental Quality have prepared a guidance document to meet the requirements of the legislature and it is provided to water suppliers as a guide for compliance.

At H2O Analytics, we’ve developed a dashboard screen which automates the calculations outlined in the guidance document on a monthly basis by pulling production data from the utilty SCADA system along with data from the utility metering system (manual read, AMR or AMI). If you are an existing H2O Analytics customer, some work may be required to update the classification of your accounts into the proper categories (single-family residential, multi-family residential, commercial, etc) as outlined in the guidance document.