2024 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operato

2023 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fe

2022 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fe

2020 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fe

2019 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fe

2017 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fe

2016 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fe

2015 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fees

2014 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fees

2013 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator; training program for certified operator; fees

2009 Michigan Laws 324.4104 – Sewerage systems; rules; classification of sewage treatment works; examinations; issuance and revocation of certificates; supervision by certified operator