Santa Margarita Lake in California could open for swimming for the first time under new state regulations, a move that has sparked apprehension among fishermen and those who value the reservoir's current tranquility.
Governor Gavin Newsom signed Senate Bill 1253 on August 31, which removes a long-standing state restriction and provides a pathway for San Luis Obispo County to permit body-contact recreation at the lake. The law is set to take effect on January 1, 2027, though county officials estimate that swimming will not be available until at least the summer of that year.
Before recreational swimming can commence, officials must address health, safety, water quality, infrastructure, and operational requirements. The county must also coordinate with the City of San Luis Obispo, which draws drinking water from the reservoir, as well as County Public Health, state agencies, the Sheriff’s Office, and County Fire. The State Water Resources Control Board’s Division of Drinking Water will specifically need to approve body contact at Santa Margarita Lake, necessitating adherence to water testing and reporting protocols.
Local residents have voiced concerns about the potential impact on the lake's environment and atmosphere. Anglers, in particular, are worried that increased human activity in the shallow shoreline areas, where fish spawn and feed, could disrupt aquatic life and make fishing more difficult. There is also a broader concern that the lake's peaceful character could be diminished by larger crowds and noise.
County officials are working to mitigate these concerns by clarifying that not all water activities will be permitted. If the Board of Supervisors approves body contact, proposed activities include swimming, stand-up paddleboarding, windsurfing, sail or foil boarding, and body-contact fishing, such as using float tubes and wading. Activities like water skiing, wakeboarding, and wake surfing are not currently under consideration. The aim is to provide more recreational opportunities for those without boats.
Public Works Director John Diodati acknowledged the potential of the change while emphasizing the work ahead. "This is an exciting possibility for Santa Margarita Lake, but there is still a lot of work ahead of us," Diodati stated. "Protecting drinking water and public safety will remain our first priorities."
The Board of Supervisors will ultimately hold a public meeting and vote on whether to expand recreational access to the lake.