filter for salt water.turns it into regular water.its bluw but when its heated it turn green and when salt water passes through itll turn into dristled water
Also, you can turn SLTW into DSTW, just heat it up, the salt will be left behind, the remaining WATR turns into WTRV, get a fan that takes the WTRV into a cooler than turns it into DSTW, then you have a Desalinization plant now.