CA AB990

Authorizes and encourages public water systems to provide emergency notifications to water users in their preferred language when updating emergency notification plans, if resources are available

Transfers regulatory authority over public water system emergency notification plans from the "department" to the State Water Resources Control Board

Changes permit, variance, or exemption issuance language from "may not" to "shall not" be issued without an approved emergency notification plan

Maintains existing requirements that public water systems must have approved emergency notification plans providing immediate notice of dangerous bacterial levels or drinking water standard violations