We do it in new areas of the city. We do it in all areas of the city—new areas and areas where mains have been replaced, where lead services have been replaced.
The idea of the random testing is to give us a measure of how much contribution to lead at the tap is coming from sources other than the lead service lines, such as the copper that is soldered with lead-tin solder, or the brass fittings.
We find the results quite random across the city. We will find homes that suddenly test above the Health Canada guideline for lead even though sometimes no lead service line is present. It depends somewhat on the age of the home. Newer homes, those built since 2000, are generally in better shape.