PSC 185.85(3)(b)4. 4. Water sold, including both metered and unmetered sales.

PSC 185.85(3)(b)5. 5. Water not sold but used for utility-authorized purposes, including flushing mains, fire protection, freeze prevention, and other authorized system uses.

PSC 185.85(3)(b)6. 6. Water loss.

PSC 185.85(3)(b)7. 7. Unknown or unaccounted-for water.

PSC 185.85(3)(c) (c) The components of a water audit are shown in Table 1.

Table 1. Water Audit Components

- See PDF for table

PSC 185.85(4) (4) Water loss control.

PSC 185.85(4)(a) (a) Each public utility shall calculate its annual percentage of non-revenue water and its percentage of water loss, based on the volume of water entering its distribution system.

PSC 185.85(4)(b) (b) A public utility shall submit to the commission a water loss control plan if a water audit shows the public utility has any of the following:

PSC 185.85(4)(b)1. 1. A percentage of non-revenue water that exceeds 30 percent.

PSC 185.85(4)(b)2. 2. A percentage of water loss that exceeds 15 percent for a Class AB or Class C utility or 25 percent for a Class D utility.

PSC 185.85(4)(c) (c) A water loss control plan under par. (b) shall include all of the following:

PSC 185.85(4)(c)1. 1. The reasons for the excessive non-revenue water or water loss.

PSC 185.85(4)(c)2. 2. A description of the measures that the utility plans to undertake to reduce water loss to acceptable levels within a reasonable time period.

PSC 185.85(4)(c)3. 3. An analysis of the costs of implementing a water loss control program, including a comparison of lost sales revenue and the costs that would be avoided by reducing leaks and losses.

PSC 185.85(4)(c)4. 4. Any additional information required by the commission.

PSC 185.85(4)(d) (d) The commission may require a public utility to conduct a leak detection survey of its distribution system if for three consecutive years the public utility’s percentage of water loss exceeds 15 percent for a Class AB or Class C utility or 25 percent for a Class D utility.

PSC 185.85 History History: CR 11-039: r. and recr. Register July 2012 No. 679, eff. 8-1-12.

PSC 185.86 PSC 185.86 Flushing mains.

PSC 185.86(1) (1) Dead-end mains, or other low flow portions of distribution systems, shall be flushed as needed to eliminate or minimize complaints from consumers arising from an objectionable condition of water due to lack of circulation. Hydrants or other flushing devices shall be placed to allow for flushing of the entire system.

PSC 185.86(2) (2) When practical, public notice of proposed flushing shall be given by radio, newspaper announcement, or other appropriate means.

PSC 185.86(3) (3) A record shall be kept of all flushing of mains, showing date, place, and estimated volume of water used. This record shall be used to determine the necessary frequency of flushing and to estimate unmetered use.

PSC 185.86 History History: Cr. Register, January, 1997, No. 493, eff. 2-1-97.

PSC 185.88 PSC 185.88 Frozen laterals.

PSC 185.88(1) (1) Thawing of a customer’s lateral shall be at the utility’s expense if:

PSC 185.88(1)(a) (a) The freeze-up is a direct result of a utility disconnect and the disconnection occurs during a time when conditions are such that freeze-up could reasonably be expected to occur or;

PSC 185.88(1)(b) (b) The customer’s portion of lateral is electrically conductive and:

PSC 185.88(1)(b)1. 1. It is the first thaw for the customer at the location and;