people segregate themselves, the Mosque won't accomplish that. People won't stop being Muslim, Jewish or Christian because you deny them building their church / community center etc. If anything they will just feel more marginalized, unwanted, feel resentment and will segregate themselves even more. Of course not everyone in Pump Hill is Jewish. Just like not everyone living near this new community would be Muslim. I doubt the community will have legal grounds to deny people residence based on their faith. The only reason there might not be non-Muslims there is because of non-Muslims not wanting to live there. And that's their own problem.