San Tan Valley's tap water contains chlorine, dissolved solids, and contaminants that affect taste and quality. Our Thirst RO systems remove 99%+ of impurities, delivering water that's purer than bottled — right from your kitchen faucet.
15-18 GPG
Water Hardness (vs. 6 GPG national avg)
EPCOR groundwater wells
Primary Water Source
Nearest: Mesa
CWC Showroom & Service Center
San Tan Valley tap water meets minimum EPA standards, but still contains Hardness, TDS, chlorine. These affect the taste, smell, and purity of your drinking water. A reverse osmosis system removes virtually all contaminants, giving you clean, great-tasting water.
Browse our reverse osmosis systems→1,600+
Five-Star Reviews
Since 1998
Serving Arizona Families
0% APR
Financing for 9 Months
San Tan Valley tap water comes from EPCOR groundwater wells and carries hardness, TDS, chlorine. A reverse osmosis system under the kitchen sink handles the water you actually drink and cook with — sized and installed for San Tan Valley homes.
reverse osmosis
Advanced water purifier delivering bottled water quality without the environmental impact. 5-stage purification removes 99%+ of dissolved solids.
or $89/mo for 9 months · 0% APR
reverse osmosis
Innovative reverse osmosis with advanced purification and alkaline remineralization. Leaves important trace minerals and electrolytes in filtered water for better taste.
or $100/mo for 9 months · 0% APR
reverse osmosis
Delivers mineral-rich alkaline water with eco-efficient purification. Balanced pH for healthier hydration — the premium option for health-conscious households.
or $111/mo for 9 months · 0% APR
The hardness range on this page reflects what we measure in San Tan Valley homes during free in-home water tests. The city's own testing is published in EPCOR Water (San Tan)'s annual water quality report.
View the EPCOR Water (San Tan) report(opens in a new tab)6056 E Baseline Rd ste 135
Mesa, AZ 85206
Mon–Fri: 8am–4pm
Sat-Sun: 8am–1pm (Sales Only)
San Tan Valley water hardness averages 15-18 GPG, sourced from epcor groundwater wells. This is significantly harder than the national average of 6 GPG, meaning scale buildup, dry skin, and appliance damage are common without treatment.
Yes — San Tan Valley is within our Phoenix metro service area. Our nearest location is in Mesa. We offer free in-home water testing and same-week installation in most cases.
Our Thirst RO systems start at $795 for the standard 5-stage system and $995 for the RO+ with alkaline remineralization. Professional installation is included. Pair with a water softener and save $450 with our bundle deal. 0% APR financing is available for 9 months.
Yes, for drinking water. A softener removes hardness so your pipes and appliances last, but it does not remove dissolved solids, chlorine, or other contaminants. Reverse osmosis handles the water you drink and cook with — most San Tan Valley homes pair both, and the bundle saves $450.
San Tan Valley tap water contains Hardness, TDS, chlorine. A Thirst RO system removes 90%+ of dissolved solids and contaminants, and the RO+ model adds alkaline remineralization for better-tasting water.
Under the kitchen sink, with its own dedicated faucet at the counter. Professional installation is included with every RO system we sell in San Tan Valley.
Arizona's high dissolved-solids water works filters harder than the national average. Pre-filters are typically replaced yearly and the membrane every few years — we set a schedule based on your San Tan Valley water and household usage.
Yes — 0% APR financing for 9 months applies to reverse osmosis systems installed in San Tan Valley, and pairing RO with a water softener saves $450.
At 15-18 GPG, San Tan Valley's water is well above the national average. A water softener protects your pipes, appliances, and skin. Pair with RO and save $350 with our bundle deal.
San Tan Valley Water Softener Systems→A water expert will test your water, recommend the right system, and give you a no-pressure quote — all for free.
