The prohibited or restricted uses of water under this Chapter shall not be applicable in those instances when the City Manager or his/her designee finds: (1) the use is essential to avoid an undue hardship for a water user; (2) special circumstances exist for a particular water user, as distinguished from other water users, which justify allowing an exception; (3) the use is essential for required government or public utility services, including but not limited to police protection, fire protection, sanitation, and other critical or emergency services; or (4) the use is essential to maintain the public health and safety.