They could always pump the "toxic" brine into California's Salton Sink.
An ancient natural channel already exists now known as the New River, a shit filled primitive sewer system that drains from and runs north from Mexicali BC into the present day man made disaster called the Salton Sea. That channel used to drain the storm runoff filled lake south into the Sea of Cortez twenty thousand years ago.
I'm sure some modern day indigenous tribal elders still remember those days when drowned Ground Sloths, Sabre Tooth Cats and Imperial Mammoths were being swept downstream to become a protein loaded broth for the larval Giant White Sea Bass and Mullet then of course became the then sustainable fishery to feed the hundreds of thousands Vaquita porpoise herds. Sony Bono would approve, I'm sure!
It's all nothing but another bull shit boondoggle. How about collecting all of the wasted runoff from the annual monsoon season?
I can still remember when almost every house in Newport Beach California had roof gutters that filled drums next to our houses that our moms cherished for hair/body/clothes washing without the even then Gub-mint mandated chlorine and fluoride infusion into the municipal water system in order to make our teeth strong and stink free drinking water.
Anyone wanna invest in the Jewish backed shit-fest? I'll almost guarantee a five hundred percent return for your investment!