The average pH is 7.9. Water on the West Side is generally softer than water on the East Side. Click here for a map of the variation in hardness in the distribution system. Click here to check the hardness in your water distribution zone. Water in the distribution system is under pressure.
Air sometimes dissolves in the pressurized lines.
The quality of the water is not affected. The sediment can cause discoloration of the water and can make the water heater less efficient. Be sure to follow the manufacturer's guidelines. Filtering Fact From Fiction .