So, so far, I like Baltimore

It's quite similar in many ways to my hometown, Philadelphia. Funny thing is, when I first got here, I called up the city water department to ask if they used either chlorine or chloramine in their water treatment, just to make sure (they have 5 separate treatment facilities, each with their own approach, so I called to ask about the facility that serves my house). Long time wait, no reply, so I ask the guy at Nepenthe. He says "yeah, they use chloramine, especially after heavy rains, which is a p.i.a., so I personally use distilled water with salts to get the right profile" .. two days later, an engineer from the water department replies to my original email to say they categorically Do Not use chloramine. So, I brewed a blonde ale with tap water, figuring that a) it would have nothing to hide behind, and if there was chlorine or chloramine in the water, it would shine through like diamonds, and b) it wouldn't take long to ferment and condition, and I would know rather quickly whether there were chemicals in the water.
Well, the blonde ale is now called "Poolside Blonde" because it has so much chlorine taste in it that I can't drink it. I kept a sixer just to see if this taste would ever age out. 6 months later, it hasn't. After that, I bought a whirlpool whole-house in-line water filter, with a 4 micron filter (rated to remove chlorine ... Does it also remove chloramine?) and I filtered the water for the next few batches. Those batches: no chlorine taste. I can't say definitively that I know exactly what's going on, but my guess is that there is some chlorine-based additive .. is this chlorine? is this chloramine? not sure, but I'm going to filter my water from now on. I bet I'll have to consider modifying my water chemistry in the future to tune-in beers (stouts and/or ipas) but we'll see what happens
any thoughts or other experience would be welcome!!
cheers!