Ah, I didn't get that from your original post.
So, you'll want to either:
A) change the row's values to include "http://" instead of just writing "www.domain.com".
-or-
😎 Prefix the link with "http://":
echo "<a href='http://{$row_accomm_counties['web']}'>http://{$row_accomm_counties['web']}</a>";