Thornton's water is hard, averaging about 230 mg/L or 13.5 grains per gallon, and the city says its treatment plants do not remove hardness. That makes a softener one of the more useful upgrades for a Thornton home with scale on fixtures or a struggling water heater. Call the number on this page to be connected with a local plumber in Thornton.
How the call goes
The number on this page connects you with an independent plumber who works in Thornton. Expect a few questions up front: how many people live in the house, whether you have a tank or tankless water heater, and where the main line comes in. Many plumbers will test hardness at your tap during the visit, since Thornton's range is wide. From there they size the unit, pick a spot near the main with a drain and outlet, and plumb a bypass valve so you can isolate the softener for service.
What moves the price
- Capacity needed for very hard water and a larger household
- Metered regeneration versus a simple timer valve
- Rerouting hose bibs and sprinkler lines around the unit
- Running a drain line and air gap to an approved spot
- Any permit tied to modifying the plumbing
- Pairing the job with a water heater flush or replacement
Why Thornton water is different
Thornton pulls mountain snowmelt from the South Platte basin and Clear Creek into reservoirs that include Standley Lake, and its annual report also names the Cache la Poudre basin. The water is treated at the Wes Brown and Thornton water treatment plants and disinfected with chloramine. The city's latest water quality report lists hardness from about 152 to 356 mg/L, averaging roughly 230 mg/L. At that level, scale shows up fast on heating elements, tankless heat exchangers, faucet cartridges and dishwasher spray arms.
Most Thornton homes are newer: the median year built is 1997, and about 22% predate 1980. Newer copper and PEX lines hold up fine, so the payoff from softening shows up mostly in appliances and fixtures. A softener will not remove chloramine, so a carbon filter is a separate decision if taste matters to you.
Thornton's Building Inspection Division requires permits for plumbing modifications and for water heater replacement. Ask the plumber whether your softener install counts as a modification.
Before the plumber arrives
- Find the main shutoff and clear a path to it
- Note the age and type of your water heater
- Decide whether the kitchen cold tap should stay unsoftened for drinking
- Check for an outlet and a floor drain or laundry standpipe nearby
- Have recent water bills handy so the plumber can estimate daily use
Water Softeners & Filtration questions in Thornton
How hard does water have to be before a softener is worth it?
Does a softener help a water heater or tankless unit last?
Does installing a softener need a permit?
Does softened water add sodium to drinking water?
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