There is a mikveh in Bethlehem, NH. The mikveh is associated with Congregation Machzikei Hadath.

The shul and mikveh open in July.

Congregation Machzikei Hadath
The Congregation and Mikvah are separate.
31 Lewis Hill Road (off Main Street)
Bethlehem, NH 03574
845-774-5434 

(Summer only)
Call for Appointment