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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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    Waterworks operator certification

    Municipal waterworks operators work at community water systems that are owned by, or serve, a city, town, village, county or other municipality. Also included in this definition are county or state-owned public institutions for congregate care or…

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    Landfill operator certification

    Chapter NR 524, Wisconsin Administrative Code was created as authorized by ss. 289.06, 289.42, and 227.11 (2), Wis. Stats., which contain the requirements for the department to develop a program of certification for persons participating in, or…

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    Incinerator operator certification

    Wisconsin Administrative Code ch. NR 499 was created as authorized by ss. 285.51, Wis. Stats., which establishes a program for the department to develop a program of certification for persons participating in, or responsible for, the operation of…

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    Resources and assistance for Laboratories

    Outreach is a critical component of the Laboratory Certification and Registration Program. We have compiled a list of forms, benchsheets, guidance documents, method references and training presentations to assist you in generating quality analytical…

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    BOD troubleshooting

    What's causing bias? Contamination? Calibration?

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    BOD Toxicity

    Sample toxicity Often referred to as "sliding" BODs BOD decreases as sample volume increases (i.e., less dilute) Occurs frequently in systems receiving industrial waste Amounts to killing off (or severe shock to) "the bugs" Results in under-…

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    BOD seed

    Seed preparation and addition De-ionized water kills - Adding a seed capsule to deionized water causes an osmotic imbalance that will kill seed organisms. The purified water —containing no salts— rushes across the bacterial cell walls. The bacteria…

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    Sampling and sample handling for BOD

    Water and wastewater samples are biologically active, and the BOD will quickly deteriorate. Minimize the time between sampling and analysis to obtain the best BOD results. Take the following precautions when sampling and handling BOD samples.…

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    BOD resources

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