The changes will vary depending on how much water and electricity is used. A typical single-family residential customer will see an average increase of about 3%, or $4.20 per month, for water and power on their bill each year from 2016 through 2020. Typical usage for a single-family residential customer averages 12 hundred-cubic-feet (HCF) water and 500 kilowatt-hours (kWh) of power.
Customers using low amounts of water and power will have a combined water and power bill increase of 2.4%, or about $1.91 per month, annually for five years. High-use customers will see a combined water and power bill increase of 5.3% on average per year, or about $16.31 per month. About 10% of residential customers fall in the highest tiers of water and power consumption, averaging 27 HCF of water and 900 kWh per month.