Public Health
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Arsenic
Arsenic is a naturally occurring element found in soil and bedrock throughout Wisconsin. Under certain conditions, arsenic can be released into groundwater and enter water wells. Long-term exposure to arsenic in drinking water is known to increase…
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NR 140 Groundwater Quality Standards Update
Subscribe to NR 140 UpdatesAs part of a continuing commitment to protect public health and the environment, the DNR periodically updates groundwater quality standards in ch. NR 140, Wis. Adm. Code.
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Wisconsin's groundwater law
Wisconsin's groundwater law, Ch. 160, Wis. Stats., established the framework for a comprehensive approach to protect public health and welfare and the environment. The intent of this law is to minimize the concentration of polluting substances in…
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Current groundwater standards
Current public health and public welfare groundwater standards are contained in Ch. NR 140, Wis. Adm. Code.
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America's Water Infrastructure Act
On October 23, 2018, America's Water Infrastructure Act (AWIA) was signed into law and is an amendment to the Safe Drinking Water Act (SDWA). As stated by U.S. EPA, AWIA "improves drinking water and water quality, deepens infrastructure investments…
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Management actions
Source water and wellhead protection A sound plan has a to-do list that identifies a list of priority measures. The plan can be updated as actions are completed. Adopting a wellhead protection ordinance is the most fundamental protective action,…
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Pandemic influenza - a guide for water plant owners and operators
What is pandemic influenza? A pandemic is a global disease outbreak. A flu pandemic occurs when a new influenza virus emerges for which people have little or no immunity and for which there is no vaccine. The disease spreads easily person-to-person…
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Drinking water security and emergency preparedness
If you are currently experiencing an emergency:During normal office hours, contact your DNR Rep. If you don’t know your rep, you can look them up on the DWS portal.After hours/on the weekend/holiday – contact 608-576-5358 to talk to the officer on…
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Public notification rule
Public notification is an important part of the Safe Drinking Water Act (SDWA). The U.S. Environmental Protection Agency (EPA) made significant changes to the Public Notification Rule, which were added to Wisconsin Administrative Code, Ch. NR 809,…