I'd mixed up the threads and posted this in the wrong one lol
RE: plumbers installing filters discussion - With this new bit about the "new" water being more corrosive I was able to hunt this down -
Corrosive Water Problems (Water Quality) ~ Thus it's possible that a simple pH adjustment at the main intake line could actually resolve the problem for Flint homes.
"Treatment units such as neutralizing filters or chemical feed systems can be installed to reduce water corrosivity by adding alkaline chemicals to the water. Since corrosion affects the entire plumbing system, these treatment devices are installed where the water enters the home to treat all of the household water (Point-of-Entry or POE).
Acid neutralizing filters are very simple water treatment units that are intended to increase pH and add calcium thereby decreasing corrosivity. They consist of a tank filled with calcium carbonate (limestone) chips, marble chips, magnesium oxide, or other alkaline material. The acid neutralizing filter is usually installed after the pressure tank. Raw water flows through the tank and as it contacts the media, its pH is increased and corrosivity decreased. It is important to note that this process will increase the hardness of the water but this is necessary for proper corrosion control. Also, the resistance of the neutralizing material may lower water pressure.
Frequent maintenance is required for neutralizing filters. The tank must be routinely refilled with neutralizing material as it is dissolved. The rate of refilling can range from weeks to months depending on the raw water corrosivity, water use, and the type of neutralizing material. Backwashing is recommended to remove trapped particles and oxidized metals unless a sediment filter is installed ahead of the unit.
Corrosivity can also be treated by injecting a sodium hydroxide or soda ash solution using a chemical feed pump before the pressure tank. This treatment system is simple and inexpensive and it does not increase water hardness. Since the unit is installed ahead of the pressure tank, there is no reduction in water pressure that sometimes occurs with neutralizing filters. There is significant maintenance including filling solution tanks and maintaining the feed pump. Soda ash is preferred over sodium hydroxide because it is safer to handle. Sodium hydroxide is extremely caustic and must be handled using accepted safety practices."
I did notice in this article here it states that lead pipes were not made illegal until 1991... I'm going to look into if that was just PA or what, because I could swear I was told that if your home was built after 1978 you didn't have to worry about lead... Was it /really/ just lead paint that was banned and not lead pipes?!?