Texas

752,017,520,275,203 · Elm Fork Trinity River Lake Lewisville

Dallas, TX

Elevated Risk Updated March 2026 1.3M residents
64
Purity Score

Contaminant Levels

PFAS
2.1 ppt
Lead
3.5 ppb
Nitrate
0.8 mg/L
Arsenic
0.4 mg/L
Fluoride
0.7 mg/L
Copper
0.32 mg/L
Hardness
7.9 gpg

Values shown in respective units

Health Insights

  • 1
    Hard water (7.9 gpg) can cause scale buildup in pipes and appliances but is generally safe to drink.
  • 2
    PFAS compounds detected. Consider a reverse osmosis filter for removal.
  • 3
    Chlorine levels are within EPA limits but may affect taste and smell.

Current Score

64 / 100
Moderate
"Good" threshold (70)

Dallas tap water is sourced from Elm Fork Trinity River Lake Lewisville and treated by Dallas Water Utilities. PFAS forever chemicals have been detected. Water hardness is hard at 7.9 GPG which may cause scale buildup. Overall purity score: 64/100 (Moderate). Updated for 2026.

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Frequently Asked Questions

Is Dallas TX tap water safe to drink in 2026?
Dallas tap water meets EPA federal drinking water standards and scores 64/100 (Moderate) on PurityMap for 2026. PFAS forever chemicals have been detected at 2.1 ppt. An NSF-certified filter is strongly recommended. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.
Does Dallas TX use chlorine or chloramine for disinfection?
Dallas 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 Dallas TX water and what is the TDS level?
Dallas water hardness is 7.9 grains per gallon (hard) with a TDS of 280 ppm (fair). 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 Dallas TX drinking water?
Yes. PFAS forever chemicals have been detected in Dallas water at approximately 2.1 ppt according to EPA UCMR5 monitoring data. A reverse osmosis or NSF P473-certified filter is the most effective residential solution.

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Data Sources & Methodology

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

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

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