Well Water Testing

The Chester County Health Department recommends that wells be tested at least once per year. Bacteriological testing of your private well can be performed by private labs, many of which operate in Chester County and the surrounding area. The following is a list of certified drinking water laboratories along with a list of the contaminants for which they test.

County - Lab	Lab Contact Info	Certified Contaminants
15-301	Brandywine Science Center Inc. Henry D. Clemens III 204A Line Road Kennett Square, PA 19348 610-444-9850	M, TM1, N/N, F, SO, C
15-27	Cedar Grove Environmental Labs Thomas J. McCaffrey, Jr. 100 Gallagherville Road Downingtown, Pa 19355 610-269-6977	M, TM1, TM2, TM3, N/N, F, SO, CN, C, TTHM, VOC1, VOC2, VOC3
15-346	H.O. Thompson Testing Lab Robert C. Shoemaker 104 Valley View Drive Parkesburg, PA 19365 610-593-5030	M
15-422	Kennett Laboratories, Inc. John L. Frank, Jr. 209 E. Maple Street P.O. Box 162 Kennett Square, PA 19348 610-444-3900	M
15-09	Lionville Laboratory, Inc. J. Michael Taylor 208 Welsh Pool Road Lionville, PA 19341 610-280-3000	TM1, TM2, TM3, N/N, F, SO, CN, C, TTHM, VOC1, VOC2, VOC3, H1, H2, H3, P1, P2, P3, SOC1, SOC2, SOC3

Key to Contaminants

M	Microbiology Certified for Total Coliform and Fecal Coliform or E-Coli
I	Inorganic Compounds: A Asbestos TM Trace Metals N/N Nitrate/Nitrite F Fluoride SO Sulfate CN Cyanide C Corrosivity
O	Organic Compounds: H Herbicides P Pesticides PCB Polychlorinated Biphenyls TTHM Total Trihalomethanes VOC Volatile Organic Compounds SOC Synthetic Organic Compounds
R	Radionuclides: Gamma Emitting Radionuclides: (Barium-133, Cesium-134, Cesium-137,      Cobalt-60, Ruthenium-106, Zinc-65) Gross Alpha/Gross Beta Iodine-131 Radium 226/228 Strontium-89 Strontium-90 Tritium Total Uranium