With the Edwards Lake siphon in place, that means the community has guaranteed water supply until early November, the SCRD's manager of infrastructure services Remko Rosenboom says. But, that comes with disquieting caveat: 'After Edwards, there are no defined, guaranteed supplies left.' As of mid-day on Oct. 5, siphons on Edwards Lake are set to start adding water to the Sunshine Coast Regional District’s (SCRD) Chapman water system. Testing was successfully completed and with regulatory approvals in place, the SCRD’s manager of infrastructure services Remko Rosenboom says that means the community has guaranteed water supply until early November.