| surveillance for waterborne disease and outbreaks associated with recreational water--united states, 2003-2004. | since 1971, cdc, the u.s. environmental protection agency, and the council of state and territorial epidemiologists have collaboratively maintained the waterborne disease and outbreak surveillance system for collecting and reporting waterborne disease and outbreak (wbdo)-related data. in 1978, wbdos associated with recreational water (natural and treated water) were added. this system is the primary source of data regarding the scope and effects of wbdos in the united states. | 2006 | 17183230 |