1991/1992 District Contacts for Northwest Ontario District contacts DWSP study Don Murray/Jim Murphy Atikokan (807) 475-1670 Beardmore Thunder Bay District Office Manitouwadge Marathon Nipigon Red Rock Terrace Bay Thunder Bay (Bare Point) Thunder Bay (Loch Lomond) Peter Fox/John Barr Dryden (807) 468-2725 Emo Kenora District Office Fort Frances Kenora Rainy River 1991/1992 District Contacts for Northeast Ontario District contacts DWSP study Gerry LaHaye Chapleau (705) 949-4640 Sault Ste Marie Sault Ste. Marie District Office Frank Driscoll North Bay (705) 476-1001 North Bay District Office Roger Roy Sudbury (705) 670-3214 Sudbury District Office ISSN 0843-834X THUNDER BAY (LOCH LOMOND) WATER TREATMENT PLANT DRINKING WATER SLTRVEILLANCE PROGRAM REPORT FOR 1991 AND 1992 JUNE 1994 Cette publication technique n'est disponible qu'en anglais. Copyright: Queen's Printer for Ontario, 1994 This publication may be reproduced for non-commercial purposes with appropriate attribution. PIBS 3132 . . EXECUTIVE SUMMARY DRINKING WATER SURVEILLANCE PROGRAM THUNDER BAY (LOCH LOMOND) WATER TREATMENT PLANT 1991 AND 1992 REPORT The Drinking Water Surveillance Program (DWSP) for Ontario is a monitoring program providing immediate, reliable, current information on drinking water quality. The DWSP officially began in April 1986 and is designed to include all municipal supplies in Ontario. In 1991, 96 supplies and in 1992, 109 supplies were being monitored The Thunder Bay (Loch Lomond) water treatment plant is a treatment facility which partially treats water from Loch Lomond. The only process consists of corrosion control and disinfection. This plant has a design capacity of 77.2 x 1000 m^/day. The Thunder Bay (Loch Lomond) water treatment plant serves a population of approximately 43,400 in Thunder Bay South. Water at the plant and at one location in the distribution system was sampled for the presence of approximately 180 parameters. Parameters were divided into the following groups: bacteriological, inorganic and physical (laboratory chemistry, field chemistry and metals) organic (chloroaromatics, chlorophenols, pesticides and PCB, ph,enolics, polyaromatic hydrocarbons and volatiles) and radiological (radionuclides) Most laboratory analyses were . conducted at the Ministry of the Environment and Energy facilities in Rexdale, Ontario. Radionuclides were analyzed by the Ministry of Labour Table A is a summary of all results by group. No known health related guidelines were exceeded. The Thunder Bay (Loch Lomond) water treatment plant, for the sample years 1991 and 1992, produced acceptable quality water and this was maintained in the distribution system. «— CO CO ro «- o o «- O ^ T- T- f\j rvj — — O — t- o »— —I —I to