Water density is almost fully inelastic w/rt temperature. At 60°F the density is 0.99907 g/cm^3, at 100°F the density is 0.99318 g/cm^3. I think that's something like a .5-1% change in density. Pipes bursting is purely because of the drastic density change from ice crystallization.

https://www.usgs.gov/special-topics/water-science-school/sci...