None of the following potential contaminants were detected in your water supply: Total coliform and E. coli, Beta/photon emitters, Alpha emitters, Radium 226+228 or combined radium, Uranium, Antimony, Arsenic, Asbestos, Beryllium, Cadmium, Chromium, Cyanide, Lead (Leaving our treatment plant), Mercury, Nickel, Selenium, Thallium, 2,4-D, 2,4,5-TP (Silvex), Alachlor, Atrazine, Benzo(a)pyrene (PAH), Carbofuran, Chlordane, Dalapon, Di (2-ethylhexyl) adipate, Di (2-ethylhexyl) phthalate, Dibromochloropropane (DBCP), Dinoseb, Dioxin [2,3,7,8-TCDD], Diquat, Endothall, Endrin, Ethylene dibromide, Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene, Hexachlorocyclopentadiene, Lindane, Methoxychlor, Oxamyl [Vydate], PCBs [Polychlorinated biphenyls], Pentachlorophenol, Picloram, Simazine, Toxaphene, Benzene, Carbon Tetrachloride, Chlorobenzene, o-Dichlorobenzene, p-Dichlorobenzene, 1,2-Dichloroethane, 1,1-Dichloroethylene, cis-1,2-Dichloroethylene, trans -1,2-Dichloroethylene, Dichloromethane, 1,2-Dichloropropane, Ethylbenzene, Styrene, Tetrachloroethylene, 1,2,4-Trichlorobenzene, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Trichloroethylene, Toluene, Vinyl Chloride, Xylenes, Chlorite, Total organic carbon, Aluminum, Color, Iron, Manganese, Odor, Silver, Zinc, Dimethoate, Terbufos sulfone, BDE-47, BDE-99, 2,4,5-HBB, BDE-153, BDE-100, 1,3-Dinitrobenzene, TNT, RDX, Acetochlor, Metolachlor, Acetochlor ESA, Acetochlor OA, Alachlor ESA, Alachlor OA, Metolachlor ESA, Metolachlor OA, NDBA, NDEA, NDMA, NDPA, NMEA, NPYR.
| CHEMICAL | DATE OF SAMPLING (Mo./Yr.) | RANGE | LEVEL DETECTED | LIKELY SOURCE OF CONTAMINATION |
| Chlorate (ppb) | 4/2013, 10/2013 | 0.0–29.0 | 12.35 | Unknown |
| Chromium (ppb) | 4/2013, 10/2013 | ND–0.32 | 0.215 | Unknown |
| Chromium-6 (ppb) | 4/2013, 10/2013 | 0.12–0.17 | 0.1425 | Unknown |
| Strontium (ppb) | 4/2013, 10/2013 | 420–554 | 495.75 | Unknown |
| Vanadium (ppb) | 4/2013, 10/2013 | 0.31–0.48 | 0.395 | Unknown |
GRU monitored for Unregulated Contaminants (UCs) in 2013 as part of a study to help the U.S. Environmental Protection Agency (EPA) determine the occurence in drinking water of UCs and whether or not these contaminants need to be regulated. At present, no health standards (for example, maximum contaminant levels) or likely sources have been established for UCs. However, GRU is required to publish the detected analytical results of the UC monitoring in our annual water quality report. If you would like more information on the EPA's Unregulated Contaminants Monitoring Rule, please call the Safe Drinking Water Hotline at (800) 426-4791.
Perfluorobutanesulfonic acid, Perfluoroheptanoic acid, Perfluorohexanesulfonic acid, Perfluorononanoic acid (PFOA), Perfluorooctanesulfonic acid (PFOS), 4-Andronstene-3,17-dione, Equiline, 17β-Estradiol, Estrone, 17α-Ethynylestradiol, 16-Hydroxyestradiol (Estriol), Testosterone, Cobalt, 1,4-Dioxane (p-Dioxane), Bromochloromethane, Bromomethane, 1,3-Butadiene, Chlorodifluoromethane, Chloromethane, 1,2,3-Trichloropropane, Molybdenum, 1,1-Dichloroethane.
