Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 604 - DESIGN, OPERATION, AND MAINTENANCE CRITERIA
Subpart A - GENERAL PROVISIONS
Section 604.115 - Usage

Universal Citation: 35 IL Admin Code ยง 604.115

Current through Register Vol. 48, No. 38, September 20, 2024

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.

Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.