#BILLYPENNGRAM OF THE DAY The world in a Weaver’s Knot at Penn’s Landing(Photo by @wmdkenner) More than half of Pennsylvania waterways contain fecal bacteria during parts of the year, report says Along the Philadelphia section of the Delaware River, E. coli frequently exceeded unhealthy levels. Environmentalists with PennEnvironment point to combined sewer overflows as the cause of the contamination. Swimmable waterways have long been the goal o…