Environmental Protection
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Water Quality-Based Effluent Limitations (WQBELs)
Water quality-based effluent limitations are calculated in order to insure that discharges to waters of the state are in compliance with water quality standards. Water quality standards include water quality criteria (such as those in chs. NR 102 […
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Variances to water quality standards
Wastewater discharges to surface water covered under Wisconsin Pollution Discharge Elimination System (WPDES) permits may be subject to water quality-based effluent limits (WQBELs). Under certain circumstances, these WQBELs may not be attainable…
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Statewide Phosphorus Multi-Discharger Variance
Eligibility County resources Implementation -->The multi-discharger variance (MDV) for phosphorus extends the timeline for complying with low-level phosphorus limits.
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Implementation
If a point source meets the eligibility requirements and requests the multi-discharger variance (MDV) for phosphorus, their Wisconsin Pollution Elimination Discharge System (WPDES) permit will, upon approval, be modified or reissued with the…
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Eligibility
Not all point sources are eligible for the multi-discharger variance (MDV) for phosphorus. The following questionnaire may help applicants assess their potential eligibility for this program. The questionnaire does not provide final eligibility…
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County Resources
County participation in the multi-discharger variance (MDV) for phosphorus is completely voluntary. If counties participate, they agree to comply with the requirements of the program to the best of their ability. By participating in the MDV,…
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Wisconsin's Phosphorus Rule
Overview Phosphorus has long been recognized as the controlling factor in plant and algae growth in Wisconsin lakes and streams. Small increases in phosphorus can fuel substantial increases in aquatic plant and algae growth, which in turn can…
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Help With Online Monitoring Report Forms
Wams ID Replaced by MyWisconsin IDOn September 3rd, 2025, the Wisconsin Access Management System (WAMS) login platform used for wastewater/septage reporting on switchboard switched to a new login system called MyWisconsin ID.Attention: Any users who…
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WPDES Permit e-Application submittals
The DNR requires electronic submittal of WPDES permit applications (eApplication). Permit applicants use the DNR Switchboard to access the eApplication. WAMS ID The DNR Switchboard helps people find DNR electronic forms using the state's Web…
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Additives
The term "additives" is used to describe products that are either water-applied or land-applied in order to perform some water treatment purpose. Additives can come in a variety of chemical formulations including, but not limited to: chemical salts…