What's in Maricopa's Water?

Maricopa County water comes from a mix of municipal surface-water and groundwater sources. Treatment chemicals, naturally occurring minerals, and aging infrastructure can affect water quality at the tap.

Review your utility's annual Consumer Confidence Report and learn more from the EPA consumer confidence report guide and Arizona Department of Environmental Quality.

Disinfection Byproducts (TTHMs & HAAs)

Common concern

Detected in Arizona

These compounds form when chlorine reacts with organic matter in source water.

Lead from Plumbing

Plumbing concern

Property-dependent

Lead can enter water from older service lines, fixtures, solder, or household plumbing.

PFAS

Emerging concern

Source-dependent

PFAS have been detected in some Arizona water supplies and require advanced treatment at the drinking-water tap.

Chlorine & Chloramines

Treatment-related

Municipal systems

Disinfectants protect public water supplies but can affect taste, odor, skin, and hair.

Hardness Minerals

Mineral

Varies by source

Calcium and magnesium can cause scale buildup on fixtures, plumbing, and appliances.

How to Protect Your Home

The right treatment depends on your home and water-test results. Whole-home carbon filtration can reduce chlorine and related tastes and odors, a water softener addresses hardness, and reverse osmosis provides advanced treatment for drinking and cooking water.

Serving Maricopa County Communities

Phoenix, Mesa, Chandler, Scottsdale, Glendale, Tempe, Gilbert, Peoria, Surprise, Avondale, Goodyear, Buckeye, Cave Creek, Anthem, Fountain Hills, Queen Creek, Paradise Valley

Maricopa County Tap Water