Ill. Admin. Code tit. 35 § 604.115

Current through Register Vol. 48, No. 19, May 10, 2024

Section 604.115 - Usage

a) Average daily usage must be based on finished water pumpage records. When records are not available or when a new supply is proposed, average daily usage must be based on at least 75 gallons per person per day based on the current or projected population to be served.

b) The average daily usage estimate must be increased when large uses such as irrigation, filling swimming pools, and service to commercial or industrial establishments are known or anticipated.

c) When records are not available, maximum demand must be calculated as 1.5 times the average daily usage.

d) For Sections 604.1345 and 604.1350, peak hourly flow must be calculated using six times the average daily usage and converted into units of gallons per minute.

Ill. Admin. Code tit. 35, § 604.115

Adopted in R18-17 at 43 Ill. Reg. 8064, effective 7/26/2019.