Established in 1881, Dallas Water Utilities provides water and wastewater services to about 2.4 million people in the Dallas area. In an effort to prevent Sanitary Sewer Overflows (caused when fats, oils, and grease clog sewer pipes), the City launched Cease the Grease Dallas. Through this program, the City collects used grease and cooking oil from residents at 28 recycling stations and then transports it all to its Southside Wastewater Treatment Plant, where it converts it to the heat and electricity needed to run the plant. The utility also has several programs to help residents and businesses reduce water consumption, including free irrigation system check-ups, two free high-performance HETs (high-efficiency toilets) per household, and free minor plumbing repairs.