ATTACHMENT A:      Lead Testing Procedure

Test Procedure:

Personnel

Trained personnel as required under regulation 170/03 from the Town of Markham Waterworks Department will conduct the pH tests and obtain water samples for lead testing. Trained personnel would include the following:

·        Certified Operator

·        Water Quality Analyst

·         Medical Officer of Health

·        Pubic Inspector within the meaning of the Health Protection and Promotion Act

Three one litre sample bottles will be prepared by Waterworks personnel (bottles with seal in tact, laboratory submission sheets completed, information printed on sample bottles, and “Drinking Water Regulation Sample” stickers placed on each bottle.

In home:

-  A waiver will be signed by the resident.

-  Three one- litre samples obtained from the same tap:

i.)  a kitchen tap, if the sample is being taken from plumbing that serves premises that have a kitchen tap, or

ii.) the tap that is most commonly used to provide water for human consumption, in any other case.

Tap Information:

-   If the tap from which samples are to be taken has an aerator, the aerator must not be removed while the samples are being taken.

-   If a filter or other water-treating device is installed on or near the tap, the filter or other device must be bypassed without being removed, if it is reasonably possible to do so, while the samples are being taken.

-   If a filter or other water-treating device is installed on or near the tap and is NOT reasonably possible to bypass the filter or other device without removing it, the samples must be taken from another tap that is commonly used to provide water for human consumptions.

-   If a filter or other water-treating device is installed on or near every tap that provides water for human consumption and, in every case, it is NOT  reasonable to bypass the filter or other device without removing it, the filter or other device must be removed when a sample is taken.

Sampling:

- The tap must be turned on for at least 5 minutes.

- The tap must be turned off for 30 minutes.

- The samples must be then taken within 5 minutes. .

- The first sample must include the first water that comes out when the tap is turned on.

- The sample must be taken with water flowing at a rate that approximates normal use,   without permitting water to splash out of the container in which the sample is being collected.

- The second sample is to be taken immediately after the first sample, without turning off the tap or altering the flow rate of the tap.

- The third sample to be taken must be taken immediately after the second sample, without turning off the tap or altering the flow rate of the tap.

-    Immediately after the third sample is taken using a pH meter that measures pH to at least two significant digits the pH must be tested.

-   First and second samples are to be delivered to laboratory and tested for lead