Including filter system and high-performance Tungsten filter.
Tungsten is a naturally occurring metal that can enter drinking water at low levels. In some places, groundwater can leach tungsten from certain rock or soil types, and industrial activity can also influence local sources. Because tungsten is usually colorless and odorless in water, household plumbing won’t reveal it without laboratory testing. Cox homeowners who want peace of mind often start by checking for metals like tungsten through proper water testing.
As research into tungsten in drinking water continues, many homeowners take a practical, precautionary approach if tests show elevated results. Clear, good-tasting water can still contain dissolved metals, so testing is the only way to know. If your Cox residence uses a private well, routine sampling helps track changes that can occur over time; if you receive utility water, reviewing local quality reports and testing at the tap can confirm what’s entering your home.
To reduce tungsten at the point where water enters the house, a whole-house reverse osmosis system is generally the most effective single-filter option. RO relies on a semipermeable membrane that rejects many dissolved metals and inorganic contaminants, lowering tungsten before it reaches faucets, showers, and appliances. Because tungsten typically travels in dissolved form, it can pass through simpler filters meant for taste or odor, so a properly designed whole-house RO including prefiltration is recommended to protect the membrane from sediment and chlorine when present.
A whole-house reverse osmosis installation can include dedicated storage and delivery so Cox homes have consistent treated water throughout the property. Long-term performance depends on correct sizing, sufficient water pressure, and routine maintenance of filters and the membrane to prevent fouling. Homes on wells may need extra pretreatment for hardness, iron, or particulates to preserve membrane life. Mr. Pure Water can review your Cox water test results and recommend a whole-house RO system sized and configured to address tungsten effectively.