On Monday, you may notice your tap water smells and tastes kind of weird. But don’t worry! It’s, once again, time for D.C. Water’s and the Washington Aqueduct’s temporary switch from chloramine to chlorine.

As D.C. Water explains in an FAQ, this annual switch is part of a program to clean the city’s pipes: “During the temporary switch, you may notice a chlorine taste and smell in your drinking water. Chlorine levels will continue to meet EPA standards and are not a health risk.”

The ol’ chloramine to chlorine switcheroo will run from March 17 to April 28. Here are some tips on what to do if you notice the odd taste or smell:

Flush cold water tap for two minutes.

Run the cold water tap for five to 10 minutes when water is not used for several hours.

Collect and refrigerate cold tap water in an open pitcher. Be sure to collect water after running the
cold water tap for two minutes. Within a few hours, the chlorine taste and odor will disappear and
the water will be conveniently cold for drinking.

Water filters can reduce chlorine taste and smell.