California Code of Regulations › Title 22 - Social Security › Division 4 - Environmental Health › Chapter 17.5 - Lead and Copper › Article 2 - Requirements According to System Size › Section 64673 - Small and Medium-Size Water System Requirements

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The requirements in this section are
				  applicable to all small and medium-size water systems.
(b) Each small and medium-size system shall
				  conduct standard tap sampling for lead and copper pursuant to section
				  64675 (General Requirements for
				  Tap Sampling for Lead and Copper). Tap sampling frequency may be reduced
				  pursuant to section
				  64675.5 (Tap Sampling
				  Frequency).
(c) A small or
				  medium-size system with an action level exceedance shall take the following
				  steps:
(1) Monitor WQPs beginning with the
				  first period after the exceedance, pursuant to section
				  64681 (Initial WQP
				  Monitoring).
(2) Proceed with
				  subparagraphs (A) through (E) if a corrosion control study is required by the
				  Department based on a review of the system's water quality, distribution
				  system, water treatment, and system features. If such a study is required, the
				  Department will notify the system in writing within 12 months of the action
				  level exceedance.
(A) Complete the study,
				  pursuant to section
				  64683 (Corrosion Control Study
				  Procedure), within eighteen months of being notified of the requirement; the
				  system will be notified of the Department's designation within six months of
				  the study's completion;
(B) Begin
				  installation of the CCT designated by the Department, pursuant to section
				  64684 (CCT Installation and
				  Operation), within twelve months of being notified of the Department's
				  designation;
(C) Complete CCT
				  installation and begin operation within 24 months of the designation;
(D) Complete two periods of standard tap
				  sampling pursuant to section
				  64675 (General Requirements for
				  Tap Sampling for Lead and Copper) and two periods of WQP monitoring pursuant to
				  section 64682 (WQP Monitoring After CCT
				  Installation) within 36 months of the designation; and
(E) Monitor WQPs and operate in compliance
				  with the WQP levels specified by the Department pursuant to section
				  64684 (CCT Installation and
				  Operation), beginning no later than within 42 months of the
				  designation.
(3) If the
				  Department does not require a corrosion control study, the system shall submit
				  to the Department, within six months of the action level exceedance, a written
				  recommendation for CCT. The Department may require the system to conduct
				  additional WQP monitoring to assist in the review of the CCT recommendation.
				  The Department will designate CCT and notify the system in writing within the
				  following timeframes; the system shall then comply with paragraphs (2)(B)
				  through (E):
(A) For medium-size systems,
				  within 12 months of the exceedance, and
(B) For small-size systems, within 18 months
				  of the exceedance;
(4)
				  Monitor source waters, pursuant to article 6 (Source Water Requirements for
				  Action Level Exceedances) of this chapter;