5 mg/L
It can be... especially if it travels through lead pipes.
No, it does not.
No.
Because lead is hugely toxic, and can leach into the water, thereby poisoning whoever drinks it.
when the earth shakes
0.o15 ppm
No, lead is poisonous! Long-term usage will result in the brain's dysfunction.
to keep lead out of drinking water pipes.
Water can be toxic if the person poisons the water in the first place or you are not drinking distilled water and you get lead into your body and die.
The basic concept of water pollution is that if the water resources we have now become polluted this can lead to damage of the soil ecosystem which will eventually lead to drinking water pollution.
I can't think you are talking drinking water pipes because anitfreeze is poisonous. Nor should you have lead pipes or lead solder in drinking water pipes. So either sleeve pipes or heating pipes then. Antifreeze has inhibitors designed to prevent corrosion.
Tap and drinking water normally has chlorine in it to reduce the bacterial count in the water. This could effect the growth of the plant, but normally the concetration of chlorine (in the water) is very low - far below the toxic level to plants. Drinking/ bottled water normally has less salts in it than regular tap water. Both have very minimal amounts of nutrients in them, which would ultimatley lead to nutrient defciencies if the plants were only grown in it.