tap water
Plural
tap waters
1
water that comes out of a faucet or a tap, usually treated to be safe for drinking and cooking
- The hotel offers free tap water in all the rooms.
- The taste of tap water varies depending on the local water supply.
- We filled the bottles with tap water before heading out.
- The tap water in the area is safe to drink after filtration.
- The city recently improved its tap water treatment system.