Cal. Code Regs. tit. 22 § 64651.32

Current through Register 2024 Notice Reg. No. 25, June 21, 2024

Section 64651.32 - Disinfectant Contact Time

"Disinfectant contact time" means the time in minutes that it takes for water to move from the point of disinfectant application or a previous point of disinfectant residual measurement to a point before or at the point where residual disinfectant concentration is measured. Disinfectant contact time in pipelines is calculated by dividing the internal volume of the pipe by the flow rate through the pipe. Disinfectant contact time within mixing basins and storage reservoirs is determined by tracer studies or an equivalent demonstration to the State Board.

Cal. Code Regs. Tit. 22, § 64651.32

1. New section filed 5-6-91; operative 6-5-91 (Register 91, No. 25).
2. Change without regulatory effect amending section and NOTE filed 6-2-2015 pursuant to section 100, title 1, California Code of Regulations (Register 2015, No. 23).

Note: Authority cited: Sections 116271 and 116375, Health and Safety Code. Reference: Sections 116275, 116365, 116375, 116385, 116390, 116400, 116530, 116535 and 116550, Health and Safety Code.

1. New section filed 5-6-91; operative 6-5-91 (Register 91, No. 25).
2. Change without regulatory effect amending section and Note filed 6-2-2015 pursuant to section 100, title 1, California Code of Regulations (Register 2015, No. 23).