@HamCob
We have lead pipes. I just give the children bottled water to drink. Sometimes I forget, they are still alive and healthy 5 years later!
Lead poisoning builds up over time.
I mean, if you live in a hard water area, it's likely your pipes are coated in limescale and the water is not contaminated with lead. And if not, I guess it's unlikely your DC will have had much exposure if they've only had a few glasses.
But you can't tell if it's damaged your DCs by looking at them - and it's irresponsible to suggest that you can IMO.
Have you ever tested your water? That's the only way to know if there's lead in it.
From this website:
What is lead poisoning?
Lead is a highly toxic metal and a very strong poison. Lead poisoning is a serious and sometimes fatal condition. It occurs when lead builds up in the body.
Lead poisoning usually occurs over a period of months or years. It can cause severe mental and physical impairment. Young children are most vulnerable.
Lead poisoning can be treated, but any damage caused cannot be reversed.
Symptoms of lead poisoning are varied. They may affect many parts of the body. Most of the time, lead poisoning builds up slowly. It follows repeated exposures to small quantities of lead.
Lead toxicity is rare after a single exposure or ingestion of lead.
Signs of repeated lead exposure include:
abdominal pain
abdominal cramps
aggressive behavior
constipation
sleep problems
headaches
irritability
loss of developmental skills in children
loss of appetite
fatigue
high blood pressure
numbness or tingling in the extremities
memory loss
anemia
kidney dysfunction
Since a child’s brain is still developing, lead can lead to intellectual disability. Symptoms may include:
behavior problems
low IQ
poor grades at school
problems with hearing
short- and long-term learning difficulties
growth delays