They're almost always available online. You could check your city's water bill and it'll have a website. Where I live, it's a county thing. I just googled "Grovetown Water Report" and found it. Based on my initial read, it looks like there are no chloramines. Those things are a bugger to get rid of so that's a good thing. A standard carbon block should get you all cleaned up and ready to run through the RO membrane.
EDIT: Here's something I learned that might be helpful. Water reports don't usually list chloramines. It would make is easier on us reefers if they did. However, if there's a line item for "Chlorine" and another line item for "Total Chlorine", the difference is the chloramines. For example, Dekalb County lists "Chlorine, Free" as 1.61 and "Total Chlorine" as 1.72. The chlorine is "free" and chloramines are chlorine bonded with another element (typically ammonia). In Dekalb County there is 1.61 ppm chlorine (free) and 0.11 chlorine bonded with ammonia to give a "Total" chlorine level of 1.72 ppm.
In the old days, you could let water sit for 24 hours and the chlorine would be released from the water. However, chlormaines can last for quite a while longer. That's why they've been added to more and more water supplies to fight microbes. Both chlorine and chloramines can reduce the life of an RO membrane so it's important to get them both out before your water is sent to the membrane.
