The District contracts with the Brazos Regional PUA to have 7.2 MGD through the SWATS plant on Lake Granbury. In addition, the District water well supply varies from year to year; but more recently accounts for supplying around 1.5 MGD. Wholesale water contracts are in place with the City of Mansfield for 9 MGD and 6 MGD with the City of Grand Prairie. JCSUD accounts for an ample total water supply capacity of 23.7 MGD.
The system has about 900 miles of distribution pipeline and 50 miles of transmission lines and is divided into 15 separate pressure planes. JCSUD operates 7 elevated storage tanks with a combined total of 5 million gallons in the system. The water CCN (certificate of convenience and necessity) service area of the District is approximately 320 square miles; predominately in Johnson County, but also serving in Tarrant and Hill county. Only three connections are being served just inside of the Ellis county line.