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nitrate & selenium in municipal waters

Nitrate is one of the most widespread groundwater contaminants in the United States, originating from agricultural operations such as fertilizer application and accumulation of livestock manure. Excessive levels of nitrate in potable water can lead to serious health effects, leading the EPA to restrict levels of nitrate to 10 mg/L in drinking water. The nitrate issue in the US and abandonment of impacted wells has left many communities without a safe, reliable drinking water source, demanding the need for a cost effective and sustainable solution to treat contaminated drinking water supplies.

Selenium occurs naturally in many ecosystems and has been identified as a target contaminant within municipal water treatment. Common drinking water treatment technologies of reverse-osmosis and ion-exchange create concentrated waste streams that can contain elevated levels of selenium and nitrate. In many cases, these concentrated waste streams require further treatment prior to discharge.



Through advanced biological treatment solutions, Frontier Water Systems offers a proven, cost efficient answer to municipalities facing nitrate and selenium challenges.

To address nitrate as well as a variety of common contaminants in drinking water, Frontier has developed the NiteHAWK™ process that provides a complete, low-cost treatment solution to service both large communities and resource limited public water systems.

In addition to providing stand-alone treatment, Frontier’s bioreactors integrate seamlessly with reverse osmosis systems, removing selenium, nitrate, and metal contaminants from the brine stream so that it is suitable for discharge or reintroduction to the drinking water supply, where possible.

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