(1) In this section:
(a) “Periodic customer billing” means a demand for payment of utility services by a public utility to a residential utility consumer on a monthly or other regular basis.
(b) “Residential utility consumer” means any individual who lives in a dwelling which is located in this state and which is furnished with a utility service by a public utility. “Residential utility consumer” includes, but is not limited to, an individual engaged in farming as defined under s. 102.04 (3).
(2) At least annually every public utility furnishing gas or electricity shall include in its periodic customer billing a statement recommending that water heater thermostats be set no higher than 125 degrees Fahrenheit in order to prevent severe burns and unnecessary energy consumption.