320 GALLONS A DAY

A family of four uses about 320 gallons of water a day or 116,800gallons a year, according to the Environmental Protection Agency.

Here's what their annual water bill would be, based on meteredrates in:

Chicago: $146 ($1.25 per 1,000 gallons)

Oak Lawn: $255 ($2.26 per 1,000 gallons up to 4,000 gallons amonth, $2.14 for every 1,000 gallons over 4,000)

Naperville: $345 ($2.70 per 1,000 gallons, plus $2.50 a month)

Riverside: $978 ($8.37 per 1,000 gallons)

These suburbs and all others using Lake Michigan water fromChicago are charged $1.25 per 1,000 gallons by the city, but addtheir own fees to cover delivery costs.