Is Mesa tap water safe to drink?

Yes but with caveats

Mesa's water meets EPA minimum standards but has some concerns. Filtration is recommended for sensitive individuals.

73/100
Purity Score
3
Issues Found
12.9 GPG
Hardness
Unknown
PFAS

3 Issues Detected in Mesa

Very Hard Water (12.9 GPG)

Hard water causes scale in pipes and shortens appliance lifespan.

Hardness data for Mesa

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for Mesa

Arsenic Approaching Limit (0.5 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Mesa
Arizona

852,018,520,285,203 · Colorado River Salt River Project

Mesa, AZ Water Quality Report

Moderate Risk Updated March 2026 504,258 residents
See Best Filters for Mesa
73
Purity Score

Health Insights

  • 1
    At 12.9 GPG, Mesa's water qualifies as very hard. This can cause limescale in pipes and shorten appliance lifespan.
  • 2
    PFAS testing data is limited for Mesa. Residents concerned about exposure may want to test independently.
  • 3
    Chlorine levels may affect the taste of Mesa's tap water. A carbon filter improves flavor.

Score

73 /100
Moderate
"Good" threshold (70)

Mesa tap water is sourced from Colorado River Salt River Project and treated by City of Mesa Water Resources. Water hardness is very hard at 12.9 GPG which may cause scale buildup. TDS is 540 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 73/100 (Moderate). Updated for 2026.

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Mesa Water FAQ

Is Mesa AZ tap water safe to drink in 2026?
Mesa tap water meets EPA federal drinking water standards and scores 73/100 (Moderate) 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 Mesa AZ use chlorine or chloramine for disinfection?
Mesa uses chloramine as the primary disinfectant with a residual level of 1.5 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 Mesa AZ water and what is the TDS level?
Mesa water hardness is 12.9 grains per gallon (very hard) with a TDS of 540 ppm (unacceptable). 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 Mesa AZ drinking water?
PFAS testing data for Mesa is incomplete or pending under EPA UCMR5 monitoring. Check your utility CCR report for the latest results. A certified filter provides precautionary protection.
What is the best water filter for Mesa?
Based on Mesa's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Mesa has very hard water (12.9 GPG) and elevated chlorine. A whole-house carbon plus softener system handles both.

Nearby Reports

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • City of Mesa Water Resources CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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