25,000 gallons in any one 24 hour period. Water use permits and Registration for Minor, Non-recurring Use of Water permits are also available in pdf format. Water use permits are good for a maximum of 10 years. Each permit holder is required to report water use to the IDNR yearly.
Forms are available by contacting the Water Supply Section.
Yes, vertical geothermal heat exchange wells require a private well construction permit. Restrictions are tied to flow measurements at various United States Geological Survey stream gauging locations. A public water supply provides piped water for human consumption and at least 15 service connections or serves at least 25 individuals daily for at least 60 days out of the year. Community systems serve at least 25 individual year round residents or 15 service connections. Examples include municipal systems, home owner associations and mobile home parks.