Tesla Issued Cease-and Desist Letter in South Texas Due to Heavy Metals and Near-Brackish Water in Lithium Refinery Wastewater

     According to a post by Yash Bajaj in AutoBlog, Tesla’s billion-dollar lithium refinery outside Corpus Christi, marketed by CEO Elon Musk as a clean, acid-free operation, has been issued a cease-and-desist order for wastewater that has tested positive for carcinogenic heavy metals and high lithium concentrations. The facility had been discharging about 231,000 gallons of wastewater per day into a local drainage ditch. At a 24-hour continuous rate, that is about 160 gallons per minute.

     The Texas Commission on Environmental Quality (TCEQ) issued Tesla a wastewater permit in January 2025. However, the permit apparently did not cover heavy metals or lithium.

“Local officials at the Nueces County Drainage District No. 2 were completely unaware of the arrangement until their maintenance workers discovered an unfamiliar pipe expelling black liquid across their easement in early 2026. While the TCEQ conducted a brief investigation in February 2026, state regulators cleared Tesla of any violations because the original permit did not require monitoring for lithium or heavy metals.”

     According to Arcelia Martin of Inside Climate News:

“Eurofins Environment Testing, an accredited lab with locations across the globe, reported traces of hexavalent chromium, a well-known carcinogen, and arsenic, an environmental poison. Nueces County Drainage District No. 2, which manages the ditch, commissioned the test.”

     Other components of concern found in the Tesla wastewater are strontium, vanadium, and lithium. These can be toxic to aquatic organisms, other wildlife, and humans. Other minerals at significantly higher than background concentrations include sodium, potassium, calcium, and magnesium put the water’s salinity at near-brackish conditions, about 10-20 times more salty than typical freshwater. These salts can dehydrate and kill plants. They can also kill the plants holding the banks of the ditch, resulting in greater erosion.

     High levels of manganese, iron, and phosphorus were also detected. The iron can deplete dissolved oxygen. The phosphorus can help trigger harmful algae blooms. There are also elevated levels of ammonia, which breaks down into nitrite, then nitrate. Nitrate can fertilize algal growth and increase chemical oxygen demand (COD). This can cause problems such as suffocation for fish.

     All of these chemicals are indicative of industrial-sourced wastewater. There seems to be nothing else that could cause such concentrations of these chemicals, although there is a possibility that some of the arsenic may come from local groundwater through a nearby overflowing pond. Nueces County Drainage District No. 2 referred to the water testing results as “quite disturbing.” South Texas is currently dealing with depleting groundwater levels, and the wastewater will likely have a negative effect on local water quality and eventually local groundwater quality as it infiltrates the ground.

     As noted, the TCEQ tested the water in February and found it to meet the permitted conditions. Apparently, TECQ did not expect elevated levels of these toxic metals and contaminants.

“TCEQ initiated its February investigation after workers for the drainage district found an unfamiliar pipe stretched across its easement. The workers reported black liquid expelling into the ditch. The drainage district, which manages the ditch area, was unaware that the state gave Tesla permission to use it.”

“District officials were confused how the state could allow Tesla to discharge an average of 231,000 gallons of lithium refinery wastewater each day into the district’s ditch without notification. TCEQ said it doesn’t communicate directly with local drainage districts as part of the permitting process.”

“Volunteer drainage district engineer Aref Mazloum said TCEQ didn’t test for heavy metals in its compliance investigation because that hadn’t been part of the district’s complaint filed earlier this year. When the investigation concluded, he said he requested the results and commissioned the third-party wastewater testing to see what else might be in the water.”

     Mazloum, now with the TCEQ Water Supply division, said the discharge would have to be remediated before it could resume. He said the company should “design and fund an on-site multi-stage wastewater treatment plant.” He recommended reverse osmosis as a treatment method. He also noted that the concentrated brine left over after treatment would have to be hauled away to a hazardous waste facility or processed through a zero-liquid discharge system.

     Fortunately, there are no water intakes or drinking water wells within five miles downstream of the site. The drainage ditch flows into Petronila Creek and eventually to Baffin Bay, a Gulf fishing spot.  

 

 

References:

 

Tesla’s 'clean' lithium supply faces questions after toxic metals found in wastewater. Yash Bajaj. AutoBlog. April 25, 2026. Tesla’s 'clean' lithium supply faces questions after toxic metals found in wastewater

Independent Testing Where Tesla’s Lithium Refinery Discharges Wastewater Found Toxic Metals: The drainage district that commissioned the test has now sent a cease-and-desist letter to Tesla’s operations, near Corpus Christi. Arcelia Martin.  Inside Climate News. April 21, 2026. Independent Testing Where Tesla’s Lithium Refinery Discharges Wastewater Found Toxic Metals - Inside Climate News

26.04.15 Tesla Letter and Report. THE LAW OFFICE OFFRANK A. LAZARTE, PLLC. April 15, 2026. 26.04.15 Tesla Letter and Report | DocumentCloud