Cal. Code Regs. tit. 23 § 3965
On March 30, 2004, the Colorado River Basin Regional Water Quality Control Board (Regional Board), adopted Resolution No. R7-2004-0017 amending the Water Quality Control Plan for the Colorado River Basin Region (Basin Plan). The amendment revised the Basin Plan by incorporate a prohibition of discharge of waste from existing or new individual disposal systems on percels of less than one-half acre that overlie the Mission Creek or the Desert Hot Springs aquifers if a sewer is available. The regulatory provisions are added to Chapter 4 of the Water Quality Control Plan.
Section 13281(b) of the California Water Code requires the Regional Board to prohibit the discharge of waste from individual disposal systems (or septic tanks) on parcels less than one-half acre that overly the Mission Creek or Desert Hot Springs Aquifers in Riverside County, California, if a sewer system is available within two hundred feet. For parcels of one-half acre or greater, septic systems are limited to two per acre if a sewer system is available, and discharge of waste from additional or existing septic systems is prohibited. This amendment implements this section of the California Water Code by incorporating this language into the Basin Plan and further requires the Mission Creek Water District to submit a report to the Regional Board describing actions taken to implement the subject prohibition.
Cal. Code Regs. Tit. 23, § 3965