Does anyone know of testing done on water quality when using CPVC pipes? Specifically looking for leaching of contaminates from the pipe? Another question is do the pipes leach less with age or more?

I have no direct knowledge of specific testing, however, if you google cpvc testing, you should get hundreds of results. Every mfgr should have MSDS results, along with test data, available.

I do know that water coming through new pipes tastes like crap for the first few weeks. I think the taste disappears due to the pipes developing a coating of the contaminants normally found in water.

Related question: Does PEX piping have the same taste problem with new pipes?

your local health department can test the water for a small fee

Wes,

I have used PEX-A piping and did not detect any added taste.

To follow up, if you google pvc pipe testing you get pressure tests not contaminates. And water test labs don't test for the contaminates one could find in PVC pipe except for vinyl chloride. And with regard to vinyl chloride I'm not sure the typical water lab test equipment is sensitive enough, maybe but I'd want to be sure. Primarily I'm looking to rule out organotins. And indeed pipes that are aged (as mine are) may have a "protective" coating on the inside from minerals etc but I'd like to be sure. Given all the evidence now of the risks of PVC it would be nice to have proof that people with PVC water pipes are not ingesting toxins.
One additional note, the bad taste of new PVC water pipes is quite likely due, at least in part,  to the joint solvent leaching into the water, swell huh.