Sea water intrusion – it ain’t just salt

‘These levels are crazy’: Louisiana tap water sees huge spike in toxic chemicals | Louisiana | The Guardian

Sea water is naturally high in bromide and contains bacteria that require disinfection. The chlorine reacts with bromine for form bromine, which contributes along with the chlorine to disinfection byproducts such as trihalomethanes (THMs) and haloacetic acids (HAAs). This is what’s happening right now is Louisiana as the combination of drought and rising sea levels has pushed salt water into the Mississippi River.

‘Everything out the faucet is salt’: Louisianans struggle as drinking water crisis persists | Louisiana | The Guardian

This is a significant risk for water systems near the shoreline on Whidbey Island, and why state and county take sea water intrusion seriously.