Heath Canada says "….drinking water treatment devices offer an effective option at the residential level, although their use should not be considered to be a permanent solution.” The permanent solution is to replace all of the offending pipes both inside and all of the pipes leading to the home. How much do you think that will cost?
There are effective household water treatment devices that are certified to remove lead from drinking water at the tap. These include:
• carbon-based filters (made specifically for lead removal)
• reverse osmosis or distillation water treatment devices
For best results, a device should be installed at the tap that is most commonly used for drinking water. In most cases, this is the kitchen tap.
Make sure that any device you buy is:
• certified as meeting the NSF International standard for lead removal (look at the box or label)
• installed and maintained according to the instructions given by the manufacturer
Treatment devices are currently certified to remove lead down to 0.01 mg/L
Mayo Clinic suggests….” Ion exchange filters, reverse osmosis filters and distillation can effectively remove lead from water. If you don't use a filter and live in an older home, run cold tap water for 15 to 30 seconds before using it.”
Water Quality Association recommends Reverse Osmosis to remove lead from your families water.
So what do I recommend? Our HUM Water Saver 75 is a great High Efficiency Reverse Osmosis System choice and to give your family that extra layer of protection I would replace the second carbon filter with a lead removal carbon filter like this one from Viqua.  If you’re looking for a Certified system this Goldline 50 is a great choice. Certified by the Water Quality Association and NSF 58 rated to remove lead and a host of other contaminants in your water.