You got 0.003 ppm in water that had been stagnant for 12 hours and you're worried? Yes, you are being a bit paranoid. Lead-free has a legal definition that does not mean ZERO lead. Your water system already meets that definition. Relax. If it makes you feel better, just don't drink the bath water.

Thanks. i've been drinking the water for 25 years with no ill effect (and most of that was from before the renovations where the new pipes were installed). I guess I just tend to be overly cautious where my daughter is concerned.

greasetrap-

I empathize. Kids are more vulnerable to lead than adults are. As someone who spent most of his work career in environmental regulation, including lead in drinking water, I can be a titch paranoid, too. However, I don't think you need to replace all your old pipes immediately. You know your water lead levels are low and, even if you replaced all the pipes, there could still be measurable lead from the well water itself, so you might not be able to get it to zero even if you replaced all the plumbing. In addition, be aware that brass faucets, until quite recently, had lead in them, too

When I had three daughters at home, I knew that my home had some copper piping with lead-containing solder, and I just made sure we ran the water from the tap if it had been sitting a while. I did progressively replace old pipes as I remodeled over the years, but I didn't obsess about removing them all at once. If you are still concerned, just make sure water for drinking or cooking is drawn after the tap has run a bit. And, even if the lead content was higher than yours tests, you still wouldn't need to worry about using this water for showering or bathing or washing hands or dishes.

I took a look at what my local water district had to say about lead in the public water supply -- I know they pro-active about contaminants -- and their annual water quality report said that, if you have a house with older copper plumbing: "you may want to flush out any water that has been sitting for six
hours or longer, prior to using for cooking or drinking. You can run the water for approximately 30 seconds
in order to flush out the plumbing lines."

In my prior life as a regulator, we found that children with elevated lead levels in their blood, particularly those under 6, often had most risk of exposure through other kinds of oral intake than water. Young kids have their fingers in their mouths a lot and also chew on things they shouldn't. They get the lead from old, lead-containing and deteriorating paint in their homes, either from lead dust getting on their hands or from eating paint chips or chewing/teething on window sills, and from playing in paint-contaminated dirt in the yard and then getting it in their mouths via their dirty hands. Other sources of elevated lead levels were from some traditional folk medicines that are popular among certain cultures, and from eating from lead-containing dishes (often the highly colored ones where the bright glazes had high lead content).

If your home is well-maintained, you flush the plumbing as needed, and there aren't other risk factors, you shouldn't need to worry about your daughter having a lead problem.

There is a threshold limit for a reason. Life is not perfect.

This is similar to radon testing. You can only get the reading so low, outdoor reading is about 0.4 pCi. At 2.0 to 4.0 pCi they say consider mitigation. At 4.0 pCi or greater they say to get mitigation.