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    Lab of the Year Awards

    Each year, the Laboratory Accreditation Program recognizes a laboratory for its outstanding commitment to producing high quality data by presenting this award.Nominees must be laboratories located in Wisconsin.Nominations may be made by anyone with…

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    Audits and Approved Auditors

    Green Tier participants are required to have their environmental management system audited at regular intervals. The frequency of audits that must be completed by a Green Tier Approved Auditor is determined by your participation level. This webpage…

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    Laboratories

    Accredited laboratories - April 2025Excel files download to your computer

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    Benefits and Requirements of Green Tier Participation

    Your participation in Green Tier identifies you as a leader because of the commitments that you have made towards environmental improvement. This webpage lists the requirements and benefits of each participation option. Click on your participation…

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    Wastewater operator certification

    A "certified operator" is an individual who has met the requirements of Chapter NR 114, Wisconsin Administrative Code, and has been issued a certificate by the DNR to operate one or more of the classifications of wastewater treatment plants.

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    Training

    Ch. NR 114, 499 and 524 Wis. Adm. Code require an operator to earn continuing education credits to maintain an active certification. These continuing education requirements are designed to help operators keep current on new requirements and…

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    Small water system (OTM/NN) operator certification

    Small water system operators work at an "other than municipal" (OTM) community water system or a non–transient non–community (NN) water system. OTM systems serve groups of 25 or more year-round residents; they can include mobile home parks,…

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    Septage business license requirements

    All septage businesses in the State of Wisconsin that service and/or dispose of septage (septic tanks, holding tanks, sanitary grease interceptors, portable restrooms, privies, etc.) shall be licensed pursuant to ch. NR 113, Wis. Adm. Code.…

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    Septage servicing operator certification

    All septage businesses in the State of Wisconsin must designate a master operator to serve as operator-in-charge (OIC). The OIC is directly responsible for the operation of the septage servicing business (reference: sub. NR 114.153(5), Wis. Adm…

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    Operator certification program

    About the program The program is responsible for ensuring that various types of professional operators have adequate training to perform the necessary tasks at their facilities or businesses. Review certification and licensing requirements by…

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