Interpretation: specifying small drinking water systems
 1. (1) For the purposes of this Regulation, the following drinking water systems are specified as small drinking water systems: 1. Subject to subsection (2), every municipal drinking water system that does not serve a major residential development and that does not serve a designated facility. 2. Subject to subsection (2), every non-municipal drinking water system that does not serve a major residential development or a trailer park or campground that has more than five service connections and that does not serve a designated facility. 3. Every non-municipal drinking water system that, i. serves, A. a major residential development, or B. a trailer park or campground that has more than five service connections, and ii. does not operate to supply water to a development, trailer park or campground referred to in subparagraph i for at least 60 consecutive days in, A. every calendar year, or B. every period that begins on April 1 in one year and ends on March 31 in the following year.  O. Reg. 319/08, s. 1 (1). (2) Despite the specifications set out in paragraphs 1 and 2 of subsection (1), a drinking water system described in those paragraphs that is not capable of supplying drinking water at a rate of more than 2.9 litres per second will only be considered to be a small drinking water system if the system serves a public facility.  O. Reg. 319/08, s. 1 (2). (3) Where a drinking water system described in paragraph 1 or 2 of subsection (1) has one or more distribution lines that supply water exclusively for operations described in subsection (4), the following calculation shall be performed for purposes of determining under subsection (2) whether the drinking water system is capable of supplying drinking water at a rate of more than 2.9 litres per second: A – B where, A =   the maximum rate, expressed in litres per second, at which the drinking water system can supply drinking water, B =   the sum of the average rates, expressed in litres per second, at which the drinking water system supplied drinking water in the preceding calendar year to the distribution lines that supply water exclusively for operations described in subsection (4). O. Reg. 319/08, s. 1 (3). (4) The operations referred to in subsection (3) are the following: 1. Agricultural operations. 2. Landscaping operations. 3. Industrial or manufacturing operations, including food manufacturing or processing operations. 4. Swimming pool or skating rink maintenance operations.  O. Reg. 319/08, s. 1 (4). (5) Despite subsection (3) and the specifications set out in paragraphs 1 and 2 of subsection (1), a drinking water system will be considered under subsection (2) to be incapable of supplying drinking water at a rate of more than 2.9 litres per second for the calendar year in which the system begins operation if the owner of the system, on reasonable and probable grounds, estimates that the result of the calculation referred to in subsection (3) would be 2.9 litres per second or less if the system had operated during all of the preceding calendar year.  O. Reg. 319/08, s. 1 (5). (6) For the purposes of subsection (1), “municipal drinking water system” means a drinking water system or part of a drinking water system, (a) that is owned by a municipality or by a municipal service board established under the Municipal Act, 2001 or a city board established under the City of Toronto Act, 2006, (b) that is owned by a corporation established under sections 9, 10 and 11 of the Municipal Act, 2001 in accordance with section 203 of that Act or under sections 7 and 8 of the City of Toronto Act, 2006 in accordance with sections 148 and 154 of that Act, (c) from which a municipality obtains or will obtain water under the terms of a contract between the municipality and the owner of the system, or (d) that serves a major residential development and was established after June 1, 2003 under an agreement with a municipality pursuant to Part VI of the Planning Act, if the agreement provides that ownership of the system may be transferred to the municipality, a municipal service board established under section 195 of the Municipal Act, 2001 or a corporation established under section 203 of the Municipal Act, 2001; “non-municipal drinking water system” means a drinking water system that is not a municipal drinking water system.  O. Reg. 319/08, s. 1 (6). (7) For the purposes of paragraph 3 of subsection (1), a drinking water system that, during the 365-day period that begins on the day the system begins operation, will not supply water for at least 60 consecutive days to a major residential development, trailer park or campground referred to in that paragraph shall be deemed, during that 365-day period, to be a drinking water system that does not operate to supply water to a development, trailer park or campground for at least 60 consecutive days in every calendar year.  O. Reg. 319/08, s. 1 (7).