Forms
15. (1) Where this Regulation requires a written notice, warning notice or report, the notice or report must be in a form provided by or approved by the Director. O. Reg. 459/00, s. 15 (1). (2) The Director may require that a document or other record that is submitted under this Regulation be submitted in an electronic format specified by the Director. O. Reg. 459/00, s. 15 (2). SCHEDULE 1 TRANSITIONAL ACCREDITATION 2,3,4,6–tetrachlorophenol 2,4–dichlorophenol 2,4–dichlorophenoxyacetic acid 2,4,5–trichlorophenoxyacetic acid 2,4,6–trichlorophenol Alachlor Aldicarb Aldrin + Dieldrin Arsenic Atrazine Azinphos-methyl Bendiocarb Benzo(a)pyrene Bromoxynil Carbaryl Carbofuran Chlordane Chlorpyrifos Cyanazine DDT Diazinon Dicamba Diclofop-methyl Dimethoate Dinoseb Dioxin and furan Diquat Diuron Glyphosate Heptachlor + Heptachlor Epoxide Lindane Malathion Mercury (Hg) Methoxychlor Metolachlor Metribuzin Nitrilotriacetic acid (NTA) Nitrosodimethylamine (NDMA) Paraquat Parathion PCB Pentachlorophenol Phorate Picloram Prometryne Radionuclides Selenium Simazine Temephos Terbufos Triallate Trifluralin Uranium O. Reg. 459/00, Sched. 1. SCHEDULE 2 SAMPLING AND ANALYSIS REQUIREMENTS Samples shall be taken from the point at which treated water enters the distribution system unless directed otherwise in the following table. “Distribution samples” or samples required to be taken “in the distribution system” shall be taken in the distribution system from a point significantly beyond the point at which treated water enters the distribution system. All sampling shall be done by taking grab samples unless “continuous monitoring” is specified. Continuous monitoring implies that sampling and analysis is done by continuous monitoring equipment that forms part of the water treatment or distribution system. Sampling and analysis is required for all parameters indicated in the first column, unless an entry in one of the other columns indicates otherwise. For the purpose of this Schedule, ground water under the direct influence of surface water is considered to be surface water.  Parameter

Surface Water Source
With Filtration

Surface Water Source
Without Filtration

Ground Water Source


Microbiological
Table A

Up to 100,000 population, a minimum of 8 samples plus an additional 1 sample per 1,000 population, shall be taken monthly in the distribution system, with at least one such sample taken every week.
Over 100,000 population, a minimum of 100 samples plus an additional 1 sample per 10,000 population, shall be taken monthly in the distribution system, with at least three such samples taken every week.
Only 25 per cent of each batch of the above samples needs to be analyzed for heterotrophic plate count or background colonies on a total coliform membrane filter analysis.
A sample must be taken at least once per week from the point at which treated water enters the distribution system.
A sample must be taken at least once per week from the raw water source (in a ground water source this means each well).


Turbidity

grab sample every four hours or continuous monitoring on each filter effluent line

continuous monitoring

grab sample once a day


 

for systems serving fewer than 500 persons, monitoring can be reduced to two grab samples per day

 

 


Chlorine Residual
(equivalent to free chlorine residual)

continuous monitoring for systems serving over 3,000

continuous monitoring for systems serving over 3,000

one grab sample per day shall be taken


 

grab samples for systems serving 3,000 or fewer as follows:

grab samples for systems serving 3,000 or fewer as follows:

distribution samples shall be taken simultaneously with and at the same location as required for microbiological sampling


 

population
≤ 500
500–1,000
1,001–2,500
2,501–3,000

frequency
1/day
2/day
3/day
4/day

population
≤ 500
500–1,000
1,001–2,500
2,501–3,000

frequency
1/day 
2/day
3/day
4/day


 

distribution samples shall be taken simultaneously with and at the same location as required for microbiological sampling

distribution samples shall be taken simultaneously with and at the same location as required for microbiological sampling

 


Fluoride

continuous monitoring or daily monitoring using grab sampling where treatment process includes fluoridation

continuous monitoring or daily monitoring using grab sampling where treatment process include fluoridation

continuous monitoring or daily monitoring using grab sampling where treatment process include fluoridation


 

all other supply systems shall monitor for fluoride annually

all other supply systems shall monitor for fluoride annually

all other supply systems shall monitor for fluoride annually


Volatile Organics
Table B

trihalomethanes quarterly in the distribution system at a point reflecting the maximum residence time in the distribution system

trihalomethanes quarterly in the distribution system at a point reflecting the maximum residence time in the distribution system

trihalomethanes quarterly in the distribution system at a point reflecting the maximum residence time in the distribution system


 

all others quarterly

all others quarterly

all others quarterly


Inorganics
Table C

annually

annually

every three years


And Sodium

in addition, lead shall be sampled annually in the distribution system at a point reflecting the maximum residence time in the distribution system

in addition, lead shall be sampled annually in the distribution system at a point reflecting the maximum residence time in the distribution system

in addition, lead shall be sampled annually in the distribution system at a point reflecting the maximum residence time in the distribution system


 

sampling for sodium is not required

sampling for sodium is not required

sodium shall be sampled every five years


Nitrates/Nitrites

quarterly

quarterly

quarterly


Pesticides & PCB
Table D

quarterly

quarterly

quarterly O. Reg. 459/00, Sched. 2. TABLE A MICROBIOLOGICAL  Total Coliforms


Escherichia coli or fecal coliforms


Heterotrophic plate count or total coliform background count by membrane filter analysis O. Reg. 459/00, Sched. 2, Table A. TABLE B VOLATILE ORGANICS  Benzene

Ethylbenzene


Carbon Tetrachloride

Monochlorobenzene


1,2–Dichlorobenzene

Tetrachloroethylene


1,4–Dichlorobenzene

TolueneTrichloroethylene


1,2–Dichloroethane

Trihalomethanes


1,1–Dichloroethylene

Vinyl chloride


Dichloromethane

Xylene O. Reg. 459/00, Sched. 2, Table B. TABLE C INORGANICS  Arsenic

Lead


Barium

Manganese


Boron

Mercury


Cadmium

Nitrate


Chromium

Nitrite


Copper

Selenium


Iron

Uranium O. Reg. 459/00, Sched. 2, Table C. TABLE D PESTICIDES AND PCB  Alachlor

Glyphosate


Aldicarb

Heptachlor + heptachlor epoxide


Aldrin + Dieldrin

Lindane(Total)


Atrazine

Malathion


Azinphos-methyl

Methoxychlor


Bendiocarb

Metolachlor


Bromoxynil

Metribuzin


Carbaryl

Paraquat


Carbofuran

Parathion


Chlordane(Total)

Pentachlorophenol


Chlorpyrifos

Phorate


Cyanazine

Picloram


Diazinon

PCB


Dicamba

Prometryne


2,4–Dichlorophenol

Simazine


DDT

Temephos


2,4–D

Terbufos


Diclofop-methyl

2,3,4,6–Tetrachlorophenol


Dimethoate

Triallate


Dinoseb

2,4,6–Trichlorophenol


Diquat

Trifluralin


Diuron

2,4,5–T O. Reg. 459/00, Sched. 2, Table D. SCHEDULE 3 OPERATIONAL PARAMETERS  Fluoride 

Temperature 


Colour 

Odour/taste 


Aluminum 

Alkalinity 


pH 

Methane


Turbidity 

Chloramine


Hardness 

Residual chlorine O. Reg. 459/00, Sched. 3. SCHEDULE 4 CHEMICAL/PHYSICAL STANDARDS  Parameter

MAC
(mg/L)

IMAC
(mg/L)


Alachlor

 

0.005


Aldicarb

0.009

 


Aldrin + Dieldrin

0.0007

 


Arsenic

 

0.025


Atrazine + N–dealkylated metabolites

 

0.005


Azinphos-methyl

0.02

 


Barium

1.0

 


Bendiocarb

0.04

 


Benzene

0.005

 


Benzo(a)pyrene

0.00001

 


Boron

 

5.0


Bromate

 

0.01


Bromoxynil

 

0.005


Cadmium

0.005

 


Carbaryl

0.09

 


Carbofuran

0.09

 


Carbon Tetrachloride

0.005

 


Chloramines

3.0

 


Chlordane (Total)

0.007

 


Chlorpyrifos

0.09

 


Chromium

0.05

 


Cyanazine

 

0.01


Cyanide

0.2

 


Diazinon

0.02

 


Dicamba

0.12

 


1,2–Dichlorobenzene

0.2

 


1,4–Dichlorobenzene

0.005

 


Dichlorodiphenyltrichloroethane (DDT)+Metabolites

0.03

 


1,2–Dichloroethane

 

0.005


1,1–Dichloroethylene(vinylidene chloride)

0.014

 


Dichloromethane

0.05

 


2–4–Dichlorophenol

0.9

 


2,4–Dichlorophenoxyacetic acid(2,4–D)

 

0.1


Diclofop-methyl

0.009

 


Dimethoate

 

0.02


Dinoseb

0.01

 


Dioxin and Furan

 

0.000000015 a


Diquat

0.07

 


Diuron

0.15

 


Fluoride

1.5 b

 


Glyphosate

 

0.28


Heptachlor + Heptachlor Epoxide

0.003

 


Lead

0.01 c

 


Lindane (Total)

0.004

 


Malathion

0.19

 


Mercury

0.001

 


Methoxychlor

0.9

 


Metolachlor 

 

0.05


Metribuzin

0.08

 


Monochlorobenzene

0.08

 


Nitrate(as nitrogen)

10.0

 


Nitrite (as nitrogen)

1.0

 


Nitrate + Nitrite (as nitrogen)

10.0

 


Nitrilotriacetic Acid (NTA)

0.4

 


Nitrosodimethylamine (NDMA)

 

0.000009


Paraquat

 

0.01


Parathion

0.05

 


Pentachlorophenol

0.06

 


Phorate

 

0.002


Picloram

 

0.19


Polychlorinated Biphenyls (PCBs)

 

0.003


Prometryne

 

0.001


Selenium

0.01

 


Simazine

 

0.01


Temephos

 

0.28


Terbufos

 

0.001


Tetrachloroethylene (perchloroethylene)

0.030

 


2,3,4,6–Tetrachlorophenol

0.10

 


Triallate

0.23

 


Trichloroethylene

0.05

 


2,4,6–Trichlorophenol

0.005

 


2,4,5–Trichlorophenoxyacetic acid (2,4,5–T)

0.28

 


Trifluralin

 

0.045


Trihalomethanes

0.100 d

 


Turbidity

1.0 NTU

 


Uranium

0.02

 


Vinyl Chloride

0.002 Notes: Short forms: MAC – Maximum Acceptable Concentration NTU – Nephelometric Turbidity Unit IMAC – Interim Maximum Acceptable Concentration mg/L – milligrams per litre Footnotes: a  Total toxic equivalents when compared with 2,3,7,8–TCDD (tetrachlorodibenzo–p–dioxin). b  Where fluoride is added to drinking water, it is recommended that the concentration be adjusted to 0.5 to 0.8 mg/L, the optimum level for control of tooth decay. c  This standard applies to water at the point of consumption. d  This standard is expressed as a running annual average. O. Reg. 459/00, Sched. 4; O. Reg. 213/02, s. 3. SCHEDULE 5 RADIOLOGICAL STANDARDS  Parameter

MAC (Bq/L)

Parameter

MAC
(Bq/L)


Natural Radionuclides


Beryllium–7

4000

Thorium–228

2


Bismuth –210

70

Thorium–230

0.4 


Lead–210

0.1

Thorium–232

0.1 


Polonium–210

0.2

Thorium–234

20


Radium–224

2

Uranium–234

4


Radium–226

0.6

Uranium–235

4


Radium–228

0.5

Uranium–238

4


Artificial Radionuclides


Americium–241

0.2 

Nibium–95

200


Antimony–122

50

Phosphorus–32

50


Antimony–124

40

Plutonium–238

0.3 


Antimony–125

100

Plutonium–239

0.2 


Barium–140

40

Plutonium–240

0.2 


Bromine–82

300

Plutonium–241

10


Calcium–45

200

Rhodium–105

300


Calcium–47

60

Rubidium–81

3000


Carbon–14

200

Rubidium–86

50


Cerium–141

100

Ruthenium–103

100


Cerium–144

20

Ruthenium–106

10


Cesium–131

2000

Selenium–75

70


Cesium–134

7

Silver–108m

70


Cesium–136

50

Silver–110m

50


Cesium–137

10

Silver–111

70


Chromium–51

3000

Sodium–22

50


Cobalt–57

40

Strontium–85

300


Cobalt–58

20

Strontium–89

40


Cobalt–60

2

Strontium–90

5


Gallium–67

500

Sulphur–35

500


Gold–198

90

Technetium–99

200


Indium–111

400

Technetium–99m

7000


Iodine–125

10

Tellurium–129m

40


Iodine–129

1

Tellurium–131m

40


Iodine–131

6

Tellurium–132

40


Iron–55

300

Thallium–201

2000


Iron–59

40

Tritium

7000


Manganese–54

200

Ytterbium–169

100


Mercury–197

400

Yttrium–90

30


Mercury–203

80

Yttrium–91

30


Molybdenum–99

70

Zinc–65

40


Neptunium–239

100

Zirconium–95

100 Notes: Radionuclide concentrations that exceed the MAC may be tolerated for a short duration, if the annual average concentrations remain below the MAC and the restriction (see immediately below) for multiple radionuclides is met. Restrictions for multiple radionuclides — If two or more radionuclides are present, the following relationship based on International Commission on Radiological Protection (ICRP) Publication 26, must be satisfied and, if it is not satisfied, a MAC shall be considered to be exceeded:  where c1, c2 and ci are the observed concentrations, and C1, C2 and Ci are maximum acceptable concentrations (MAC) for each contributing radionuclide. O. Reg. 459/00, Sched. 5. SCHEDULE 6 INDICATORS OF ADVERSE WATER QUALITY Each of the following is an indicator of adverse water quality: 1. Escherichia coli (E. coli) or fecal coliform is detected in any required sample other than a raw water sample. (Corrective action: Increase the chlorine dose and flush the mains to ensure that a total chlorine residual of at least 1.0 mg/L or a free chlorine residual of 0.2 mg/L is achieved at all points in the affected part(s) of the distribution system. Resample and analyze. Corrective action should begin immediately and continue until E. coli and fecal coliforms are no longer detected in two consecutive sets of samples or as instructed by the local Medical Officer of Health.) 2. Total coliforms detected (but not Escherichia coli or other fecal coliforms) in any required sample other than a raw water sample. (Corrective action: Resample at the same site and analyze. If confirmed to be positive, increase the chlorine dose and flush the mains to ensure a total chlorine residual of at least 1.0 mg/L or a free chlorine residual of 0.2 mg/L to all points in the affected part(s) of the distribution system. Corrective action outlined should begin immediately and continue until total coliforms are no longer detected in two consecutive sets of samples or as instructed by the local Medical Officer of Health.) 3. Unchlorinated water is directed to the distribution system, where chlorination is used or required. This includes water in the distribution system which has less than 0.05 mg/L of free chlorine residual when tested. (Corrective action: Restore chlorination immediately and follow instructions as directed by the local Medical Officer of Health.) 4. Samples, other than raw water samples, containing more than 500 colonies per mL on a heterotrophic plate count analysis. (Corrective action: Resample and analyze. On confirmation, call the local Medical Officer of Health again and consult.) 5. Samples, other than raw water samples, containing more than 200 background colonies on a total coliform membrane filter analysis. (Corrective action: Resample and analyze. On confirmation, call the local Medical Officer of Health again and consult.) 6. Aeromonas spp., Pseudomonas aeruginosa, Staphylococcus aureus, Clostridium spp. or fecal streptococci (Group D streptococci) are detected in samples, other than raw water samples. (Corrective action: Resample and analyze. On confirmation, call the local Medical Officer of Health again and consult.) 7. Sodium concentration exceeds 20 mg/L. Notification need not occur more frequently than once in five years. (Corrective action: Resample and analyze. On confirmation, call the local Medical Officer of Health again. The aesthetic objective for sodium in drinking water is 200 mg/L. The local Medical Officer of Health must be notified when the sodium concentration exceeds 20 mg/L so that this information may be communicated to local physicians for their use with patients on sodium restricted diets.) 8. A pesticide not listed in Table D of Schedule 2 is detected. (Corrective action: Resample, take a corresponding raw water sample and analyze. On confirmation, call the local Medical Officer of Health again and consult. Drinking water should be free of pesticides and every effort should be made to prevent pesticides from entering raw water sources. Pesticides may be reported by their most common trade name, a listing of which, called the Compendium of Scheduled Pesticides is accessible on the Internet through the website of the Ministry of the Environment at www.ene.gov.on.ca.) O. Reg. 459/00, Sched. 6.