Radon Mitigation in Hayden, ID

Hayden spreads over flat prairie at about 2,280 feet, beside a lake with no surface outlet that drains straight down into the aquifer. Idaho DHW test results by ZIP code, updated through 2019, count 1,405 home radon tests in 83835, and 720 of them, 51%, reached 4.0 pCi/L or more. Most homes here date from 1990 or later.

Or call (509) 278-2215

48-hour test from $195 · Systems from $1,295 · Post-mitigation test included

How it works in Hayden

1. STEP 1
   Test

   A 48-hour continuous monitor in your lowest living level, under closed-house conditions. Report the same day it comes out.

2. STEP 2
   Look and quote

   We check the foundation, run a suction test and plan the pipe route for Hayden winters. You get a fixed price in writing.

3. STEP 3
   Install

   Most systems take one day: suction point, sealing, fan, manometer and the electrical permit.

4. STEP 4
   Re-test

   A post-mitigation test at least 24 hours after the fan starts shows the new number. The guarantee is below 4.0 pCi/L.

Radon mitigation cost in Hayden

About four in five Hayden homes were built after 1980, so most jobs are single-family houses with one main foundation. On prairie gravel a single suction point often reaches a long way; on the clay-rich ground west of the lake it may take more. Avista or Kootenai Electric serves your meter, depending on the address.

Starting prices include the electrical permit and the post-mitigation test. Bold: systems common in Hayden homes. Estimate your system →

for a typical 60-watt fan running around the clock, depending on which utility serves your address. Energy charge only, at 2026 residential rates.

A 20-watt fan costs about a third of that, a 90-watt fan half again as much.

Permits and local rules in Hayden

Hayden at a glance

Area figures describe the neighborhood, not your home. Only a test tells you your number. Sources are listed at the end of this page.

Prairie gravel, a sinking lake and granite shores

Hayden Lake shows how open the ground is. It is 180 feet deep, held in by glacial flood gravel, and has no established surface outlet: its water drains underground into the Rathdrum aquifer. Under the city's flats, Hayden's comprehensive plan maps mostly Garrison gravels over clay and basalt, plus Avonville fine gravelly silt loam, a cover of loess and ash over outwash.

The lake's far shores are older rock. North and east rise mountains of Belt siltite, argillite and quartzite, cut by a granitic pluton that crops out between O'Rourke and McLeans bays. West of the lake a basalt plateau carries ancient soils, and one well there passed through 980 feet of Latah Formation lake clay and silt beneath a basalt flow.

Inside the aquifer, a fine-grained layer runs just west of the lake, where one well went through 90 feet of clay. Under Hayden the aquifer lies 150 to 400 feet down, leaving a deep layer of dry gravel and silt between the water and the floor slabs. A lakeside, prairie or plateau address can read high or low; your own test settles it.

depth of Hayden Lake, which has no surface outlet and drains through flood gravel into the aquifer²

Hayden questions