Lead in drinking water Drinking water usually accounts for only a small percentage of a person's total daily intake of lead. In most areas of New Brunswick, the concentration of lead in natural water supplies is very low. However, the use of lead solder in plumbing, lead service connections to the main water supply, or lead pipes in the home can contribute to significant levels of lead in domestic water. The problem is more evident in areas with soft and acidic drinking water and in very old or very new homes. Water from drinking fountains may have higher levels of lead than water from nearby taps, since it may sit in the fountain for a longer period and there may be more soldered joints in a given length of pipe than in household plumbing.
Food can be a major source of lead.
It contains lead from the soil, water used in processing and from the use of lead solder in cans used in canning foods. Chips of lead-based paint, if eaten, can pose a threat to children. Also, the stripping or sanding of old paint during home renovations can produce lead particles which may be inhaled or swallowed by people in the house. Other sources of exposure Airborne lead comes from industrial exhaust and until recently from the use of leaded gasolines. Concentrations in homes and gardens depend on how close they are to industrial plants and highways.