| Business | Phone |
| Mayville Electric & Water 3 S Erie St, Mayville 14757 | (716) 753-2125 |
| Town Emergency 15 E Chautauqua St, Mayville 14757 | (716) 664-3100 |
| Chautauqua Assessor's Office 7 S Erie St, Mayville 14757 | (716) 753-2236 |
| Chautauqua Highway Supt 50 Patterson St, Mayville 14757 | (716) 753-7255 |
| Chautauqua Justice Office 5 S Erie St, Mayville 14757 | (716) 753-5245 |