Although Sharon’s town water supply has dropped with the dry weather of the last few weeks, it remains in fine shape, according to Eric Hooper,  superintendent of public works. He credited mandatory water restrictions, in place since May 1,  with keeping the supply at a healthy level. Many communities wait to implement restrictions, make them voluntary, or do not limit unattended watering to two  hours per day, as Sharon  does. The rules, which last through Oct. 1,  specify that odd-numbered homes may have unattended watering from 6 to 8 p.m.  on Mondays  and Thursdays,  and even-numbered homes from 6 to 8 p.m.  on Tuesdays  and Fridays.  Private wells are exempt unless the well required a variance.