Effluent seen flowing from PVC pipe to creek. Investigators suspected toxic event. Investigators suspected typical spring shad kill or a result of pond turnover. Heavy rain observed on day before kill. Crappie 6000 Kill caused by the replacement of most of detention pond water with potable Cary city water released from a water main break.
Investigators attribute fish death to high concentrations of chloramine in the potable water.
Most affected fish were bluegill. Crystal Lake Carolina Lakes Harnett Bluegill, Largemouth Bass, Carp 150 Rain event occurred days prior. Bluegill 300 Fish kill reported in conjunction with algal bloom. This species has been known to include toxic strains. The tests revealed that some toxicity was present in the sample and that toxicity in the sample was reduced on May 25th.