Berghaus Men's Hillmaster Ii GTX Tech Boot BRN Hiking

How waterproof are they really? i need something i can wear in the mud and wet grass, with no ingress of water.

Do these boots suit wide feet with high arches?

I love these boots but they hurt my feet after 4 weeks wearing them, is there any other insoles i could put in these boots please?

How has the waterproofing lasted on these? Work outside, walking dogs so heavy usage required..