County Of Marshall issued the following announcement on Jul 16.
Adjust your water softener to 8 grains per gallon to reduce salt use by up to 75%, save money, and reduce chloride discharge to the Redwood River!
For more information, visit ci.marshall.mn.us/rebate or call 537-6776.
This project was funded by Minnesota Environment and Natural Resources Trust Fund.
Original source can be found here.