Nitrate Defined and Sources
What is nitrate and where does it come from?
Although nitrate is necessary, high levels can be harmful to humans, animals, and plants.
widths of the red arrows show relative amounts of nitrate leaching
| Nitrate is also found wherever biotic things are
breaking down or decomposing like animal waste, and
septic system absorption fields or mounds.
The main sources of nitrogen in groundwater are highly fertilized crops and lawns, and large amounts of human and animal waste (septic systems, sewage, and manure).
Studies have shown that nitrate in Wisconsin's and Portage County's groundwater comes from:
The DNR website has more information on nitrate in drinking water.
Also pick up, "Nitrate in Wisconsin Groundwater: Sources and Concerns" (G3054) from your Wisconsin County Extension office.
explanation | impacts
| PC levels | testing
| in drinking water | actions
Nitrate: explanation | impacts | PC levels | testing | in drinking water | actions
goals and strategies | nitrate | pesticides | quantity
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