In fiscal year 2023, Tesla’s Giga Texas factory used about 128 million gallons of Austin city water. By fiscal year 2025, that number had ballooned to more than 544 million gallons, a fourfold increase that made the electric vehicle plant one of Austin Water’s single largest customers. The figures come from a city-produced table titled “Large Water Customers, Five Year Comparative Data (2021-2025),” included in a council backup document dated March 12, 2026, and filed under agenda ID 26-1193.
The roughly 416-million-gallon increase over two years far exceeds the 200-million-gallon threshold referenced in the headline. To put that volume in perspective: the average Austin single-family home uses around 7,500 gallons of water per month, according to Austin Water conservation data. The additional water Tesla consumed in FY2025 compared to FY2023 could supply approximately 4,600 homes for an entire year.
For comparison, large automotive assembly plants in the United States typically consume between 200 million and 500 million gallons of water per year, depending on whether they operate paint shops, cooling towers, and battery production lines. Toyota’s Georgetown, Kentucky, plant and BMW’s Spartanburg, South Carolina, facility both fall within that range based on their published sustainability reports. Tesla’s Giga Texas, at 544 million gallons in FY2025, now sits at the upper end of that spectrum, notable for a plant that reached that level within just a few years of opening…