The district’s investment of any surplus money in its treasury, including money in any sinking fund, shall be in accordance with Article 1 (commencing with Section 53600) of Chapter 4 of Part 1 of Division 2 of the Government Code.
Source:
Section 105125, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PUC§ionNum=105125..