San Tan Valley, Arizona — Water Quality Report
What's in San Tan Valley's Water?
Based on EPCOR 2024 Water Quality Reports (San Tan PWS & San Tan Anthem) · epcor.com
⚠️ Groundwater Alert. San Tan Valley is served by EPCOR and relies heavily on groundwater from the region's aquifer. Groundwater in this area carries naturally elevated arsenic and a higher overall mineral load than surface water systems — making point-of-use filtration especially important.
12–16 GPG
Water hardness (hard to very hard)
Groundwater
Primary source — higher mineral content
Arsenic
Elevated risk from aquifer geology
EPCOR
Served by 2 systems: San Tan PWS & Anthem
Key Contaminants in San Tan Valley's Water
Arsenic (Elevated Risk)
Groundwater-sourced systems carry higher arsenic concentrations than surface water. Arsenic is a known carcinogen linked to bladder, lung and skin cancer. Reverse osmosis removes 88–96%.
Hard Water (Very Hard)
At 12–16 GPG, San Tan Valley has some of the hardest water in the East Valley. Severe scale buildup on fixtures, inside water heaters, and throughout appliances is common.
Elevated Mineral Load
Groundwater picks up more dissolved minerals than surface water. Higher TDS (total dissolved solids) affects water taste and can accelerate corrosion of fixtures and appliances.
Chlorination Byproducts
Chlorine used in treatment reacts with organic matter to form THMs and HAAs — disinfection byproducts linked to long-term health risks.
Choose Your Level of Protection
GOOD
Water Softener
S48 Water Softener · Clack valve
View product details →Tackles severe hardness & scale
Protects appliances & water heater
Softer skin, hair & laundry
Does not remove arsenic or minerals
Prefer no salt? View our Salt-Free Conditioner →
BETTER
Whole House Combo
S48 Combo System · Clack valve
View product details →Everything in Good, plus:
Removes chlorine & DBPs
KDF reduces lead & mercury
Improved taste & odor throughout
Does not remove arsenic
BEST
Combo + Reverse Osmosis
S48 Combo + S48 RO System
View product details →Everything in Better, plus:
Arsenic — 88–96% rejection
Removes dissolved inorganics
Fluoride — 87–93% reduction
Virtually pure drinking water
Data source: EPCOR 2024 San Tan PWS & San Tan Anthem Water Quality Reports · epcor.com/us/en/az/safety/water-quality/water-quality-reports.html
Ready to protect your San Tan Valley home?
(602) 730-0262 · blake@state48water.com · ROC# 346721