SpaceX has replied to the CNBC report

https://x.com/SpaceX/status/1823080774012481862

For those not wanting to click an X link

CNBC’s story on Starship’s launch operations in South Texas is factually inaccurate.

Starship’s water-cooled flame deflector system is critical equipment for SpaceX’s launch operations. It ensures flight safety and protects the launch site and surrounding area.

Also known as the deluge system, it applies clean, potable (drinking) water to the engine exhaust during static fire tests and launches to absorb the heat and vibration from the rocket engines firing. Similar equipment has long been used at launch sites across the United States – such as Kennedy Space Center and Cape Canaveral Space Force Stations in Florida, and Vandenberg Space Force Base in California – and across the globe.

SpaceX worked with the Texas Commission of Environmental Quality (TCEQ) throughout the build and test of the water deluge system at Starbase to identify a permit approach. TCEQ personnel were onsite at Starbase to observe the initial tests of the system in July 2023, and TCEQ’s website shows that SpaceX is covered by the Texas Multi-Sector General Permit.

When the EPA issued their Administrative Order in March 2024, it was done without an understanding of basic facts of the deluge system’s operation or acknowledgement that we were operating under the Texas Multi-Sector General Permit.

After we explained our operation to the EPA, they revised their position and allowed us to continue operating, but required us to obtain an Individual Permit from TCEQ, which will also allow us to expand deluge operations to the second pad. We’ve been diligently working on the permit with TCEQ, which was submitted on July 1st, 2024. TCEQ is expected to issue the draft Individual Permit and Agreed Compliance Order this week.

Throughout our ongoing coordination with both TCEQ and the EPA, we have explicitly asked if operation of the deluge system needed to stop and we were informed that operations could continue.

TCEQ and the EPA have allowed continued operations because the deluge system has always complied with common conditions set by an Individual Permit, and causes no harm to the environment. Specifically:

• We only use potable (drinking) water in the system’s operation. At no time during the operation of the deluge system is the potable water used in an industrial process, nor is the water exposed to industrial processes before or during operation of the system.

• The launch pad area is power-washed prior to activating the deluge system, with the power-washed water collected and hauled off.

• The vast majority of the water used in each operation is vaporized by the rocket’s engines.

• We send samples of the soil, air, and water around the pad to an independent, accredited laboratory after every use of the deluge system, which have consistently shown negligible traces of any contaminants. Importantly, while CNBC's story claims there are “very large exceedances of the mercury” as part of the wastewater discharged at the site, all samples to-date have in fact shown either no detectable levels of mercury whatsoever or found in very few cases levels significantly below the limit the EPA maintains for drinking water.

• Retention ponds capture excess water and are specially lined to prevent any mixing with local groundwater. Any water captured in these ponds, including water from rainfall events, is pumped out and hauled off.

• Finally, some water does leave the area of the pad, mostly from water released prior to ignition and after engine shutdown or launch. To give you an idea of how much: a single use of the deluge system results in potable water equivalent to a rainfall of 0.004 inches across the area outside the pad which currently averages around 27 inches of rain per year.

With Starship, we’re revolutionizing humanity’s ability to access space with a fully reusable rocket that plays an integral role in multiple national priorities, including returning humans to the surface of the Moon. SpaceX and its thousands of employees work tirelessly to ensure the United States remains the world’s leader in space, and we remain committed to working with our local and federal partners to be good stewards of the environment.