C.R.S. § 25-1.5-206: Applicability.

(1) Except as otherwise provided in the federal "Safe Drinking Water Act", the provisions of this part 2 shall apply to each public water system in this state; except that the provisions of this part 2 shall not apply to a public water system that:

(a) Consists only of distribution and storage facilities (and does not have any collection and treatment facilities);

(b) Obtains all of its water from, but is not owned or operated by, a public water system to which such regulations apply;

(c) Does not sell water to any person;

(d) Does not authorize incidental use of untreated water; and

(e) Is not a carrier that conveys passengers in interstate commerce; or

(f) Prohibits, through ordinance, resolution, or other enforceable enactment, the use of its system, or connections thereto, for the delivery of water to the public for human consumption, except to the extent that such user is a public water system subject to the provisions of this part 2.