Add Yahoo as a preferred source to see more of our stories on Google. As Central Iowa Water Works imposes a lawn-watering ban to help ensure member utilities have the capacity to treat high levels of ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Tim Heffernan Tim Heffernan is a writer who covers air and water quality and ...

Reverse osmosis systems remove nitrates and other contaminants from water by forcing it through a membrane. Home reverse osmosis systems are increasing in sales due to high nitrate levels in central ...

As Central Iowa Water Works imposes a lawn-watering ban to help ensure member utilities have the capacity to treat high levels of nitrates in their source water, some central Iowans are eyeing the ...