On March 8th, 2023 the California Division of Drinking Water (DDW) will present to the State Board to adopt regulatory priorities for 2023.
The resolution contains a number of items, here are highlights of some items where a schedule is presented:
1. Notice of Proposed rulemaking for a Maximum Contaminant Level (MCL) for hexavalent chromium (CrVI) is scheduled for this month, March 2023. In December 2022 DDW submitted a Regulatory Impact Analysis to the Department of Finance evaluating impacts of a 10 microgram per liter (µg/L) MCL for CrVI.
2. Notice of Proposed Rulemaking for Direct Potable Reuse scheduled for spring 2023.
3. Board adoption of the Cross Connection Control Policy Handbook schedule for late 2023.
4. Notice of Proposed Rulemaking for revised Detection Limits for Purposes of Reporting (DLRs) for metals scheduled for Spring 2023. DDW anticipates conducting a survey of laboratories regarding costs and capabilities for organic compounds in summer 2023.
5. Proposal to revise regulations for electronic submittal of drinking water analytical results scheduled for Board consideration in spring 2023.
6. Proposed Notification Levels (NL) and Response Levels (RL) for anatoxin-a, microcystins and cylindrospermopsin anticipated for spring 2023.
7. DDW anticipates a draft Public Health Goal (PHG) for 1,4-dioxane will be released for public comment during 2023 by the Office of Environmental Health Hazard Assessment (OEHHA). Currently there is an NL of 1 µg/L and a RL of 35 µg/L for 1,4-dioxane.
8. Draft PHGs were issued by OEHHA in 2021 for PFOA (0.007 parts per trillion (ppt)) and PFOS (1 ppt). DDW expects the PHGs to be “finalized soon.”
Other topics included in the enclosed DDW resolution include: arsenic, cadmium, PFAS, NDMA, DBPs, Lead and Copper Rule Revision (LCRR), LCR Improvements (LCRI), mercury, manganese, and an update of regulations for non-potable uses of recycled water.