2026-011 - Ordinance amending Chapter 4, Article 4.02, “Construction Codes and Standards,” of the Code of Ordinances; repealing the adoption of the 2021 International Building Code

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potential connection between the public water supply and a source of contamination or pollution. Manual M14. The American Water Works Association's Recommended Practice for Backflow Prevention and Cross -Connection Control, current edition. TCEQ. The Texas Commission on Environmental Quality. Water purypyor. The water purveyor has the responsibility to supply potable water to the city's customers and has the authority to take or cause to be taken the necessary measures to ensure the public drinking water distribution system is protected from any actual or potential backflow hazards. Water service entrance.,That point in the owner's water system beyond the sanitary control of the water purveyor; generally considered to be the outlet end of the water meter and always before any unprotected branch. (b) Ry[pose. Within distribution systems there exist points called cross -connections where nonpotable water can be connected to potable sources. These cross -connections can provide a pathway for backflow of nonpotable water into potable sources. Backflow can occur either because of reduced pressure in the distribution system (termed backsiphonage) or the presence of increased pressure from a nonpotable source (termed backpressure). Backsiphonage may be caused by a variety of circumstances, such as main breaks, flushing, pump failure, or emergency firefighting water drawdown. Backpressure may occur when heating/cooling, waste disposal, or industrial manufacturing systems are connected to potable supplies and the pressure in the external system exceeds the pressure in the distribution system. Both situations act to change the direction of water, which normally flows from the distribution system to the customer, so that nonpotable and potentially contaminated water from industrial, commercial, or residential sites flows back into the distribution system through a cross -connection. During incidents of backflow, these chemical and biological contaminants have caused illness and deaths, with contamination affecting a number of service connections. In order to protect the life, health and well-being of the citizens of and visitors to the city the following cross - connection control program has been established. (c) General. (1) No water -service connection shall be made to any establishment where a potential or actual contamination hazard exists unless the water supply is protected in accordance with the 290 Rules and this article. No water -service connection shall be made without a release authorization from the building safety department, and as directed by the building official or plumbing inspector, the water purveyor shall discontinue water service if a required air gap or backflow prevention assembly is not installed, maintained, and tested in accordance with the 290 Rules and this article.