★★★★★
“Water heater was only 8 years old when it gave out — hard water killed it. Aqua Source installed a softener and a new tankless unit. Already seeing a difference in our fixtures.”
Serving all of Caldwell & Canyon County
Caldwell Water Softener & Filtration Services
Caldwell's water averages 280 PPM TDS and 17 grains per gallon, drawing from the Snake River aquifer with known hardness and agricultural runoff concerns. Aqua Source installs custom water treatment systems built for Caldwell's exact water profile.
Caldwell Sale
$200 OFF any water softener — installation included
Claim offer →
Caldwell Water Profile
Caldwell's water comes with hard water and agricultural mineral challenges.
Caldwell's municipal water supply draws from the Snake River aquifer in Canyon County. This water source carries higher dissolved mineral content than Ada County sources, and Caldwell's proximity to agricultural land introduces additional dissolved solids and occasional nitrates into the groundwater supply.
The result is water averaging 16–18 grains per gallon hardness, around 280 PPM TDS, and elevated mineral content that causes rapid scale buildup in pipes, water heaters, and appliances throughout the home.
Avg. Hardness
17 gpg
Avg. TDS
280 PPM
pH
7.8
Source
Snake River aquifer
Our Services
Water treatment solutions for Caldwell homes.
Custom-built for Caldwell's specific water chemistry. At prices that beat the competition.
Water Softeners
Superior softening for cleaner, softer water everywhere.
View Products →Whole House Filtration
Combines superior water filtration and softening in one system.
View Products →Hot Water Recirculator
Get instant access to hot water every time you turn on the faucet.
View Products →Reverse Osmosis
Advanced purification for the purest drinking water.
View Products →Tankless Water Heaters
Top-of-the-line tankless heaters for endless hot water on demand.
View Products →Not Sure? Get a Free Test
We'll test your Caldwell water for free and tell you exactly what you need.
Book a Free Test →
Aqua Advantage
Why Caldwell homeowners choose Aqua Source.
25+ Years in Caldwell
A quarter-century of installing in Caldwell homes — we know your plumbing, your soils, and the quirks of your neighborhood's water service.
Local & Family-Owned
Headquartered right here in the Treasure Valley. The owner answers the phone. Same techs come back for service — never a subcontractor.
Made in the USA
Industry-leading components manufactured domestically. No commission-based selling — direct pricing means we beat the big guys consistently.
Service Area
Serving all of Caldwell and surrounding Canyon County.
From downtown Caldwell to Indian Creek Plaza area and all new developments on the city perimeter — Aqua Source covers every Caldwell neighborhood. Same-day water testing available throughout Canyon County.
- Downtown Caldwell (83605)
- North Caldwell
- South Caldwell
- East Caldwell
- Indian Creek Area
- Caldwell Industrial Corridor
- Farmway Area
- Idaho Center Area
- Rimrock
- Willow Creek
- Centennial
- Caldwell Heights
Active service zones
Caldwell Customer Reviews
4.9 ★ across 412 verified reviews.
★★★★★
“We had a reverse osmosis system installed too. The drinking water quality went from barely tolerable to genuinely delicious. No more buying bottled water.”
★★★★★
“Aqua Source is the real deal. Showed up on time, explained everything clearly, priced it fairly, and did clean work. Would recommend to anyone in Caldwell.”
Caldwell FAQ
Common questions from Caldwell homeowners.
Why is Caldwell's water hard?
Caldwell draws from the Snake River aquifer in Canyon County — a water source with naturally high mineral content from the surrounding basalt formations and agricultural land. This produces 16–18 gpg hardness and around 280 PPM TDS consistently.
Is a water softener worth it in Caldwell?
Yes. At 17 gpg, Caldwell's water causes significant scale buildup and premature appliance failure. A properly installed softener extends appliance lifespan, reduces soap usage, and improves water feel throughout the home.
Which parts of Caldwell do you serve?
We serve all of Caldwell (83605, 83606) including downtown, North Caldwell, South Caldwell, East Caldwell, Indian Creek area, Rimrock, Centennial, and all surrounding Canyon County communities.
How much does a water softener installation cost in Caldwell?
A complete water softener installation in Caldwell ranges from $1,800 to $3,500 all-in. Aqua Source uses flat transparent pricing — installation, materials, and warranty all included. Currently offering $200 off any softener system.