1
Hard water (11.4 gpg) can cause scale buildup in pipes and appliances but is generally safe to drink.
2
PFAS data is limited for this utility. Consider testing or precautionary filtration.
3
Chlorine levels are within EPA limits but may affect taste and smell.

Current Score

75 / 100

Good

"Good" threshold (70)

Tucson tap water is sourced from Colorado River CAP and groundwater and treated by Tucson Water. Water hardness is very hard at 11.4 GPG which may cause scale buildup. TDS is 490 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 75/100 (Good). Updated for 2026.

Need a Filter?

We've matched the best filters for Tucson's specific water issues.

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The Best Water Filter For Tucson Homes

Matched to local water issues and filtration standards.

Best for Tucson

iSpring WGB32B 3-Stage Whole House

Whole-House Carbon Filter

Price Range $230–270

Top Pick for Tucson

iSpring WGB32B 3-Stage Whole House

Tucson has very hard water (11.4 GPG) and elevated chlorine. A whole-house carbon plus softener system handles both.

Why this fits Tucson

Reduces hardness from 11.4 GPG to soft water
Whole-house chlorine and chloramine removal
Protects all appliances pipes and water heaters

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As an Amazon Associate, PurityMap may earn from qualifying purchases. Prices may vary.

Also Recommended

AFWFilters 5600sxt 48,000 Grain Softener

Salt-Based Water Softener — $650–750

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Want to know exactly what's in YOUR tap?

City reports show averages. Your home may be different — especially with older pipes.

Buy Test Kit on Amazon ($25–30)

Frequently Asked Questions

Is Tucson AZ tap water safe to drink in 2026?

Tucson tap water meets EPA federal drinking water standards and scores 75/100 (Good) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.

Does Tucson AZ use chlorine or chloramine for disinfection?

Tucson uses chloramine as the primary disinfectant with a residual level of 1.4 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.

How hard is Tucson AZ water and what is the TDS level?

Tucson water hardness is 11.4 grains per gallon (very hard) with a TDS of 490 ppm (poor). This level causes noticeable scale buildup in water heaters kettles and dishwashers. A water softener is recommended to protect plumbing and reduce soap usage.

Has PFAS been found in Tucson AZ drinking water?

PFAS testing data for Tucson is incomplete or pending under EPA UCMR5 monitoring. Check your utility CCR report for the latest results. A certified filter provides precautionary protection.

Nearby Water Quality Reports

Phoenix Arizona — 73/100 Mesa Arizona — 73/100 Yuma Arizona — 73/100 Peoria Arizona — 73/100 Surprise Arizona — 73/100 Goodyear Arizona — 73/100

View all Arizona cities

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Compare water quality reports across all 50 US states

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Data Sources & Methodology

EPA Safe Drinking Water Information System (SDWIS)
EWG Tap Water Database
Tucson Water Consumer Confidence Report (CCR)
USGS regional water monitoring data

PurityMap compiles publicly available data and does not perform independent testing.

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