Ill. Admin. Code tit. 35, § 681.215 – Certified Operator Requirement

a) Every community water supply shall employ on its operational staff at least one natural person certified as competent as a water supply operator under the provisions of the Law and this Part. [415 ILCS 45/1]
b) All portions of a community water supply system shall be under the direct supervision of a properly certified community water supply operator. [415 ILCS 45/1]
c) Certified operators must be of the required class or higher:
1. 1) A Class A facility must employ and be supervised by a Class A certified operator.
2. 2) A Class B facility must employ and be supervised by either a Class A or Class B certified operator.
3. 3) A Class C facility must employ and be supervised by a Class A, Class B or Class C certified operator.
4. 4) A Class D facility must employ and be supervised a certified operator of any class.
d) A community water supply that meets all of the following is exempt from the requirements of this Section:
1. 1) consists only of distribution and storage facilities and does not have any collection and treatment facilities;
2. 2) obtains all of its water from, but is not owned or operated by, a community water supply that is required to employ a Class A, Class B, Class C, or Class D community water supply operator;
3) does not sell water to any person; and
1. 4) is not a carrier that conveys passengers in interstate commerce. [415 ILCS 45/9.1]
e) A community water supply may satisfy the requirements of this Section by contracting the services of a properly qualified certified operator. [415 ILCS 45/1(3)] The contract between the community water supply and the contract operator must be approved by the Agency and meet the requirements of Subpart J and the Law.