Greywater regulations in Texas require off-grid living enthusiasts to be careful when discharging wastewater. Greywater refers to the water that comes from washing machines, showers, and bathroom sinks. While it can be reused for irrigation, it must not be discharged in a manner that would cause public health problems. Therefore, the Texas Commission on Environmental Quality (TCEQ) regulates the use of greywater to ensure that sustainable practices are being followed. The TCEQ requires that the greywater system must comply with the state's plumbing code and obtain a permit before being installed. Moreover, the discharge of untreated greywater onto the ground surface or into surface water is not allowed. Therefore, off-grid dwellers in Texas must be cautious when using greywater and follow the regulations to avoid environmental and health hazards.