I went to high school with STeve Jobs lived down the road from him.. and ended up living in the same hood as him in Palo Alto.. we were just west coast wanna be hippies smoking dope dropping acid etc etc. ( jobs more than most).. we had no clue as to how you folks live back there .. and its still that way today...

One cause could be electrolosis , dissimilar metals touching each other , another cause acidic water eating the copper from the inside out , third it could be bad pipe , in the early 1980's they built houses near me with copper pipe , after 15 years they were all having problems with leaks .Prepare yourself to replace the pipes in your house , its going to need to be done .

My main ingredients for weapons were simply a boric acid (borax) and sugar powder mix (about 1 to 10 borax to sugar).

When Chlorine reacts with water, it produces hydrochloric acid and atomic oxygen (For those of you following along, that's O not O+O, which is what we actually breathe.)  

Because chocolate contains heart healthy nutrients such as flavonoids, methylxanthines, polyphenols and stearic acid, which reduces inflammation and increase good cholesterol (high-density lipoprotein or HDL cholesterol).

My own personal home and one of my higher end homes has acid stained and sealed concrete.

One is called Hair and Grease, it comes in a bag as it's an acid product-so consider your pipes and the environment.

Grind all concrete with a diamond wheel, don't use the acid etch.  

I think she would magically become more helpful after that.Also look into enzyme products then possible muriatic acid then kilz sealer

A savvy architect, knowledgeable of both building and fire protection codes, with the energy to muddle through the process, could prove to be very valuable.And since the sprinkler piping was installed in the attic spaces, we used a glycol system to prevent freezing.What's driving the requirement for a second water line... is the existing line too small to handle the sprinkler demand or do they want the lines isolated?