Boise's groundwater averages 257 PPM TDS and 15 grains per gallon of hardness — among the hardest residential water in the West. Aqua Source builds custom-tuned systems for our exact water chemistry, with same-day estimates from the North End to West Bench.
Boise's drinking water comes primarily from groundwater wells tapping the Treasure Valley aquifer and surface water from the Boise River. As snowmelt and groundwater travel through the basalt and limestone formations beneath the valley, they pick up significant amounts of calcium and magnesium — the two minerals that define water hardness.
The result: an average residential hardness of 14–18 grains per gallon, around 257 PPM total dissolved solids, and a slightly alkaline pH around 7.8. The USGS classifies anything above 10.5 gpg as "very hard," and Boise sits comfortably in that range.
Custom-built for Boise's specific water chemistry. At prices that beat the competition.
Superior softening for cleaner, softer water everywhere.
View Products →Combines superior water filtration and softening in one system.
View Products →Get instant access to hot water every time you turn on the faucet.
View Products →Advanced purification for the purest drinking water.
View Products →Top-of-the-line tankless heaters for endless hot water on demand.
View Products →We'll test your Boise water for free and tell you exactly what you need.
Book a Free Test →More than 25 years of plumbing and water treatment experience across the valley — we know the local plumbing, the soils, and the quirks of each city's water service, Boise included.
Headquartered right here in the Treasure Valley. The owner answers the phone. Same techs come back for service — never a subcontractor.
Industry-leading components manufactured domestically. No commission-based selling — direct pricing means we beat the big guys consistently.
From the historic homes of the North End with their century-old plumbing, to new builds in Harris Ranch and Hidden Springs — we install across all of Boise. Same-day in-home water testing inside city limits, with most installs completed in a single afternoon.
Nearby service areas: Meridian · Eagle · Kuna
What's in Treasure Valley tap water? See each city's 2025 water report figures in our guide to water treatment services in Boise.
“Aqua Source put a water softener for us when we remodeled our house. Beyond being a great value, they were professional and responsive. I would recommend using Aqua Source for any of your plumbing needs to anyone in the Treasure Valley!”
“Great service! Brock was very knowledgeable and he helped explain what are options were. The software machine we got is very quiet and our water is silky smooth! It was also a very reasonably priced unit! Highly recommended!”
“I recently had the pleasure of working with Aqua Source and I could not be happier. Brock was extremely knowledgeable and professional. He took the time needed to answer all of my questions. I highly recommend this company for anyone looking to invest in a…”
Boise's drinking water comes primarily from groundwater wells drawing from the Boise River aquifer and Treasure Valley basin. As water travels through limestone and basalt formations beneath the valley, it picks up calcium and magnesium. The result is an average hardness of 14–18 grains per gallon (around 257 PPM TDS), which the USGS classifies as 'very hard.'
If you've noticed white scale on faucets, spotty dishes, dry skin or hair after showering, or appliances failing earlier than expected, you're already seeing the effects. At Boise's hardness levels, water heaters last up to 50% longer and soap/detergent use drops by roughly 50%.
All of them. Aqua Source services every Boise neighborhood including the North End, East End, Boise Bench, West Bench, Southeast Boise, Warm Springs, Harris Ranch, Hidden Springs, Collister, Garden City, and the Boise Foothills. Same-day estimates are typical inside city limits.
A professionally installed whole-house water softener in Boise typically ranges from $1,800 to $3,500 depending on capacity, technology, and existing plumbing. Aqua Source publishes flat, all-in pricing — installation, materials, and warranty included — and we're currently running $200 off any softener system.
