Virtually all iron filtration systems sold as a whole house filter have either carbon or birm sand as the filter media to remove the iron. Carbon filters have a life span of up to 5 years and require frequent chemical or air injection to work properly.
For similarly named airports, see Newport State Airport (disambiguation). Newport State Airport (IATA: NPT, ICAO: KUUU, FAA LID: UUU) is a state owned, public use airport in Newport County, Rhode Island, United States. It serves the city of Newport and is located two nautical miles (4 km) northeast of its central business district.
Norfolk, Virginia, ignored the 'N' to get ORF; Newark, New Jersey, is EWR, Newport News, Virginia, chose to use the name of the airport to get PHF -Patrick Henry Field. Both Wilmington, North Carolina and Key West, Florida followed Norfolk's lead to obtain ILM and EYW.