Two small water agencies are trying to divorce themselves from the San Diego County Water Authority and join a Riverside County water agency instead.

The San Diego County Water Authority isn’t willing to let them go so easily. Its board of directors last week approved a resolution to ask the obscure San Diego Local Agency Formation Commission “to require approval by voters across the Water Authority’s service area of any proposed ‘detachment’ by the Rainbow Municipal Water District and the Fallbrook Public Utility District from the Water Authority,” the Water Authority wrote in a press release.