Identifying Possible Sources of Fecal Coliform to the
Orange Juice Creek Tributary, East Providence, RI

Cristina L. Seda

In May 1995, Hundred Acre Cove, Barrington, RI, the receiving water of the Runnins River, was closed permanently to shellfishing. Dry weather levels of fecal coliform exceeded state limits. In October 1995, a wet-weather survey identified five locations where ecoli levels were unacceptably high; among these was Orange Juice Creek Tributary, East Providence, RI. Five sampling stations were established along the Creek's one-mile length and water samples and flow measurements were collected during March and April, 1996. Water samples were analyzed for ecoli using the membrane filter method. Dry weather fecal coliform levels were often comparable in magnitude to wet weather levels. Flows from two outfalls were determined to be major sources of contamination to this sub-basin of the Runnins River Watershed, possibly explaining the similarity between dry and wet weather levels of E. coli in Orange Juice Creek.