Google has started banning all faucets from there program. I don't think you will have success get your website approved by Adsense. You will have more chance to get mellowads working on your website. They are more faucets friendly.
As i know, faucets have problem with AdSense not because of theit content, but because of bots/proxies and fake traffic that they are bringing. I use AdSense on my faucet over a year without problems. (now my traffic is very little, but adverts still are hanging there)
It is always good to make combo of ad networks at least 2 - 3 services. (Bitmedia and Mellowads are good)
The best way to check if your website/faucet is allowed to use AdSense is just submit an application there and they will give you reply with an explanation.