Including filter system and high-performance Nitrite filter.
Nitrite is a nitrogen-based compound that can enter drinking water when the local nitrogen cycle is disturbed. Common causes include fertilizer runoff, septic or wastewater influence, and the breakdown of organic material that reaches groundwater. Because nitrite is colorless and usually has no distinct taste or smell, it can be present without obvious signs. The only reliable way to know whether your Old Town water contains nitrite is to have it tested properly.
Homeowners in Old Town—especially those on private wells—often include nitrite in routine water testing, for example after heavy rains or changes to nearby land use. Even if you’re on a municipal supply, testing can offer peace of mind when water quality seems off. Nitrite and nitrate are related and can convert under certain conditions, so identifying which compound is present is important for choosing the correct treatment.
To reduce nitrite throughout the house, the most effective single-filter option is a whole-house reverse osmosis system. RO uses a semi-permeable membrane that removes many dissolved ions, including nitrite, rather than relying on carbon alone. Because nitrite is dissolved, point-of-entry reverse osmosis treats water before it reaches kitchen fixtures, bathrooms, and appliances in your Old Town home.
A well-designed whole-house reverse osmosis setup for nitrite removal will include prefiltration to protect the membrane and postfiltration to polish the water. Proper sizing and flow capacity are key to maintaining pressure and steady performance across your Old Town property. Membranes can foul over time, so scheduled maintenance and timely filter changes are necessary; Mr. Pure Water can help recommend the right RO configuration based on your test results and household needs.