A well shall be chlorinated to a minimum concentration of 50 parts per million for a minimum of 4 hours when a pump is installed or reinstalled.
N.H. Admin. Code § We 702.02
#4198, eff 1-5-87; ss by #4730, eff 1-15-90; ss by #4898, eff 8-13-90; EXPIRED: 8-13-96
New. #6327, INTERIM, eff 8-24-96, EXPIRED: 12-22-96
New. #6449, eff 1-29-97; ss by #7307, eff 6-13-00; ss by #9179, eff 6-13-08