The majority of residents (49 homes) have household plumbing, and most use individual wells.

Water usually picks up lead inside the home from household plumbing that is made with lead materials.

But it added that a good part of the problem comes from ordinary household plumbing, parts of which can contan high concentrations of lead.

Congress enacted laws in the 1980's to reduce lead levels in solder used for household plumbing.

The chlorinated water should be drawn into the household plumbing and remain overnight, from 24 hours to 48 hours.

A piped water and gravity sewer system is under construction, with household plumbing.

To minimize the risk, most household plumbing is deliberately installed away from unheated areas.

Periodically check your roof and the household plumbing.

Cold weather poses a hazard to household plumbing, which is even more vulnerable if the heating system fails.

"Whether its household plumbing or the railroads, at some point you have to standardize the connections."