Horsehair worm eggs range in size from 40 microns wide to 50 microns long. Horsehair worms are found on the ground or on plants, especially near water.ĥ. The worms vary in color from whitish to yellow/tan to brown/black.Ĥ. The worms are quite thin, ranging from 1/25 inch to 1/16 inch wide (1 mm to 1.5 mm) and are uniform in diameter from front to back.ģ. Horsehair worms are long, measuring from several inches to over 14 inches.Ģ. It was suggested that the worms were “horsehair worms.” The following are some of the “Facts” related to “Horsehair Worms” that we have been able to compile.ġ. The wells have never been evaluated to determine if the well is under the direct or indirect influence of surface water. (For more info, visit our page Groundwater Under the Influence)ĥ. The wells appear to be located in the floodplain. The wells were not fitted with Sanitary Well Caps and the well casings were not 18 inches above grade.Ĥ. They did not know if the wells were in the unconsolidated (sand and gravel aquifer) or bedrock.ģ. They did not know how the wells were constructed.Ģ. During my discussion with the well owners, the following seem to be the common threads:ġ. The KnowYourH2O Team has been contacted by residents in Western Pennsylvania regarding a problem with Nematodes in their Well Water. With respect to the location of these wells, I am just going to say they are in the Allegheny River Basin located in the riparian zone for the Allegheny River and reportedly in wells that are 75 to < 100 feet deep.
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