O. Reg. 457/16: ONTARIO DRINKING WATER QUALITY STANDARDS, Filed December 15, 2016 under Safe Drinking Water Act, 2002, S.O. 2002, c. 32
ontario regulation 457/16
made under the
Safe Drinking Water Act, 2002
Made: December 14, 2016
Filed: December 15, 2016
Published on e-Laws: December 15, 2016
Printed in The Ontario Gazette: December 31, 2016
Amending O. Reg. 169/03
(ONTARIO DRINKING WATER QUALITY STANDARDS)
1. (1) Item 31 of Schedule 2 to Ontario Regulation 169/03 is revoked and the following substituted:
31. |
Dioxin and Furan |
0.000000015 (Total toxic equivalents when compared with 2,3,7,8-TCDD (tetrachlorodibenzo-p-dioxin)) |
(2) Schedule 2 to the Regulation is amended by adding the following item:
33.1 |
Ethylbenzene |
0.14 |
(3) Item 35.1 of Schedule 2 to the Regulation, as made by section 1 of Ontario Regulation 373/15, is amended by striking out “0.08b” in Column 3 and substituting “0.08 (expressed as a running annual average of quarterly results)”.
(4) Item 45 of Schedule 2 to the Regulation is revoked.
(5) Items 54 and 57 of Schedule 2 to the Regulation are revoked and the following substituted:
54. |
Selenium |
0.05 |
. . . . .
57. |
Tetrachloroethylene (perchloroethylene) |
0.01 |
(6) Schedule 2 to the Regulation is amended by adding the following item:
58.1 |
Toluene |
0.06 |
(7) Item 63 of Schedule 2 to the Regulation is revoked and the following substituted:
63. |
Trihalomethanes |
0.100 (expressed as a running annual average of quarterly results) |
(8) Schedule 2 to the Regulation is amended by adding the following item:
66. |
Xylenes |
0.09 |
(9) The footnotes to Schedule 2 are revoked.
2. Schedule 3 to the Regulation is revoked and the following substituted:
SCHEDULE 3
RADIOLOGICAL STANDARDS
Table 1
Natural Radionuclides
Item |
Radiological Parameter |
Standard (expressed as a maximum in becquerels per litre) |
1. |
Beryllium-7 |
4000.0 |
2. |
Bismuth -210 |
70.0 |
3. |
Lead-210 |
0.1 |
4. |
Polonium-210 |
0.2 |
5. |
Radium-224 |
2.0 |
6. |
Radium-226 |
0.6 |
7. |
Radium-228 |
0.5 |
8. |
Thorium-228 |
2.0 |
9. |
Thorium-230 |
0.4 |
10. |
Thorium-232 |
0.1 |
11. |
Thorium-234 |
20.0 |
12. |
Uranium-234 |
4.0 |
13. |
Uranium-235 |
4.0 |
14. |
Uranium-238 |
4.0 |
Table 2
Artificial Radionuclides
Item |
Radiological Parameter |
Standard (expressed as a maximum in becquerels per litre) |
1. |
Americium-241 |
0.2 |
2. |
Antimony-122 |
50.0 |
3. |
Antimony-124 |
40.0 |
4. |
Antimony-125 |
100.0 |
5. |
Barium-140 |
40.0 |
6. |
Bromine-82 |
300.0 |
7. |
Calcium-45 |
200.0 |
8. |
Calcium-47 |
60.0 |
9. |
Carbon-14 |
200.0 |
10. |
Cerium-141 |
100.0 |
11. |
Cerium-144 |
20.0 |
12. |
Cesium-131 |
2000.0 |
13. |
Cesium-134 |
7.0 |
14. |
Cesium-136 |
50.0 |
15. |
Cesium-137 |
10.0 |
16. |
Chromium-51 |
3000.0 |
17. |
Cobalt-57 |
40.0 |
18. |
Cobalt-58 |
20.0 |
19. |
Cobalt-60 |
2.0 |
20. |
Gallium-67 |
500.0 |
21. |
Gold-198 |
90.0 |
22. |
Indium-111 |
400.0 |
23. |
Iodine-125 |
10.0 |
24. |
Iodine-129 |
1.0 |
25. |
Iodine-131 |
6.0 |
26. |
Iron-55 |
300.0 |
27. |
Iron-59 |
40.0 |
28. |
Manganese-54 |
200.0 |
29. |
Mercury-197 |
400.0 |
30. |
Mercury-203 |
80.0 |
31. |
Molybdenum-99 |
70.0 |
32. |
Neptunium-239 |
100.0 |
33. |
Niobium-95 |
200.0 |
34. |
Phosphorus-32 |
50.0 |
35. |
Plutonium-238 |
0.3 |
36. |
Plutonium-239 |
0.2 |
37. |
Plutonium-240 |
0.2 |
38. |
Plutonium-241 |
10.0 |
39. |
Rhodium-105 |
300.0 |
40. |
Rubidium-81 |
3000.0 |
41. |
Rubidium-86 |
50.0 |
42. |
Ruthenium-103 |
100.0 |
43. |
Ruthenium-106 |
10.0 |
44. |
Selenium-75 |
70.0 |
45. |
Silver-108m |
70.0 |
46. |
Silver-110m |
50.0 |
47. |
Silver-111 |
70.0 |
48. |
Sodium-22 |
50.0 |
49. |
Strontium-85 |
300.0 |
50. |
Strontium-89 |
40.0 |
51. |
Strontium-90 |
5.0 |
52. |
Sulphur-35 |
500.0 |
53. |
Technetium-99 |
200.0 |
54. |
Technetium-99m |
7000.0 |
55. |
Tellurium-129m |
40.0 |
56. |
Tellurium-131m |
40.0 |
57. |
Tellurium-132 |
40.0 |
58. |
Thallium-201 |
2000.0 |
59. |
Tritium |
7000.0 |
60. |
Ytterbium-169 |
100.0 |
61. |
Yttrium-90 |
30.0 |
62. |
Yttrium-91 |
30.0 |
63. |
Zinc-65 |
40.0 |
64. |
Zirconium-95 |
100.0 |
Notes:
Radionuclide concentrations that exceed the standard may be tolerated for a short period, as long as the annual average concentrations remain below the standard and the restriction (see immediately below) for multiple radionuclides is met.
Restriction for multiple radionuclides: Based on International Commission on Radiological Protection (ICRP) Publication 26, if two or more radionuclides are present, the sum of the quotients of the observed concentration in becquerels per litre divided by the respective standard in becquerels per litre for each of the radionuclides detected must be less than or equal to one.
Commencement
3. This Regulation comes into force on the later of July 1, 2017 and the day it is filed.