White Clay Creek Stream Watch Project

Impacts at Avondale

In 2005 an intensive survey was done on the East Branch in and around the borough of Avondale. Macroinvertebrates indicated that the Avondale Waste Water Treatment Plant (WWTP) on the west fork of the East Branch appears to be a major contributor to stream degradation. Trout Run (Site 25), a tributary below the plant, is also in very poor condition.

Map of sampling sites in and near the borough of Avondale.

USGS data suggest water quality directly below the WWTP improved between 1992 and 1997, but has since degraded from 1997 to 2004. Further sampling is needed to assess if the upgrades to the WWTP in 2006 have measurably improved water quality.

MAIS scores from sites sampled in the borough of Avondale in October 2005.