Re:High schoolers create filter to remove lead in water
by jansan on Friday April 01, 2022 @04:45AM
(#30876330)
If the remaining lead is caused by the pipes inside the houses, how come this problem is isolated to Flint? Shouldn't there be the same level of lead all over the US? Maybe they are only measuring lead levels in Flint, because it was they were very high at the beginning.
[ Parent
| on HN ]
Re:High schoolers create filter to remove lead in water
by sitharus on Friday April 01, 2022 @06:13AM
(#30876669)
Flint switched their water source to one that was more corrosive, which resulted in much more lead entering the water. It was down to water chemistry. Water without the corrosive elements won’t pick up much lead.
Re:High schoolers create filter to remove lead in water
by AngryData on Friday April 01, 2022 @08:51AM
(#30877609)
Most places are smart enough to not falsify water test reports so they can skimp on pH balancing treatment so the water isn't acidic to save literal pennies. The water coming in was acidic enough for the local hospitals to complain about their stainless steel sinks rusting from it. Even if there was no lead in any of the pipes they would have had to replace the entire water system because it ate right through their steel pipes which otherwise had been coated in mineral deposits to protect it.