Is Dallas, TX tap water safe to drink in 2026?

Dallas tap water earns a C grade on CleanWaterGrade. While it meets baseline utility standards, testing shows 4.7 ppt combined PFOA/PFOS (vs the 4.0 ppt EPA limit), 3.8 ppb 90th-percentile lead, and 7.9 gpg (135 mg/L) hardness.

How hard is the water in Dallas, TX?

Dallas water hardness averages 7.9 grains per gallon (135 mg/L), classified by the USGS as Hard.

What is the best water filter for Dallas, TX?

For drinking and cooking in Dallas, an NSF-58 under-sink reverse osmosis system like the Waterdrop G3P800 removes 99.4% of PFAS and lead. For whole-home scale and disinfectant protection, the Aquasana Rhino EQ-1000 is matched to Dallas water chemistry.

Dallas, TX EPA UCMR5 & USGS Water Report • PWSID TX0570004

Dallas, TX Tap Water Quality Report (2026): Grade C

Direct Answer: Dallas, TX tap water (served by Dallas Water Utilities (DWU)) earns an overall C Safety Grade (72/100). Public testing records 4.7 ppt combined PFOA/PFOS (exceeds the 4.0 ppt EPA federal limit), 3.8 ppb 90th-percentile lead, and 7.9 gpg (135 mg/L — Hard) mineral hardness.

Official Municipal Water System Filing • Population Served: 1,304,379

Dallas Water Utilities (DWU)

Primary Water Source: Elm Fork Trinity River & 6 Surface Reservoirs (Ray Roberts, Lewisville, Grapevine, Ray Hubbard, Tawakoni, Fork)

Covered ZIP Codes: 75201, 75202, 75204, 75205, 75206, 75207, 75208, 75209, 75214, 75218, 75219, 75225+

C Score 72/100

PFAS (PFOA + PFOS)

4.7 ppt

PFOA: 2.6 ppt • PFOS: 2.1 ppt (EPA Limit: 4.0 ppt)

Above 4.0 ppt EPA MCL

Lead (90th Percentile)

3.8 ppb

EPA Action Level: 10.0 ppb • Goal: 0 ppb

Point-of-Use RO Advised

Disinfection Byproducts

48.9 ppb TTHM

HAA5: 27.1 ppb • Chloramine Active

Catalytic Carbon Target

USGS Water Hardness

7.9 gpg

135 mg/L CaCO3 (Hard)

Hard

Best Filter Match for Dallas Homeowners: Waterdrop G3P800 under the kitchen sink for 99.4% PFAS/lead removal + Aquasana Rhino EQ-1000 for whole-house chloramine & scale control.

See Waterdrop G3P800 ($0.32/day) → See Aquasana Rhino EQ-1000 →

Homeowner 5-Year Water Math (Family of 4)

Why Bottled Water & Pitchers Lose to NSF-58 Reverse Osmosis

Verified against NSF/ANSI 53, 58 & 372 Lab Standards

Bottled Cases

$1,460/yr

$4.00/day • $7,300 over 5 years

240,000+ nanoplastic particles per liter in PET bottles
Unregulated under EPA Safe Drinking Water Act
Heavy weekly hauling & plastic waste

PFAS Lock: Unverified / Variable

Standard Carbon Pitcher

$180/yr

$0.49/day • Taste & Chlorine Only

0% removal of dissolved hardness minerals (TDS)
Standard granular carbon misses short-chain PFAS & fluoride
40-gallon media saturates every 4–6 weeks

PFAS Lock: Partial / Clogs Fast

NSF-58 Tankless Under-Sink RO

$0.32/day

$450–$599 Year 1, then $58 every 6 mos

99.4% PFOA/PFOS, lead, chromium-6, arsenic & TDS removal
800 GPD tankless direct-flow (fills 8 oz glass in 5 sec)
2-second twist-and-lock cartridge swap twice a year

Compare NSF-58 Tankless RO →

What This Means for Your Home

How Dallas’s Water Impacts Drinking, Skin & Appliances

1. Drinking & Cooking Water

PFAS (4.7 ppt) & Lead (3.8 ppb)

Dallas tap water receives a C grade due to 4.7 ppt combined PFOA/PFOS in Trinity River reservoir blends (exceeding the 4.0 ppt EPA limit), seasonal algal-bloom earthy taste/odor compounds, and chloramine treatment byproducts. Boiling tap water concentrates PFAS and lead rather than removing them. Installing an NSF/ANSI 58 tankless reverse osmosis system under your kitchen sink strips 99.4% of PFOA, PFOS, lead, chromium-6, and dissolved solids right at the tap.

Fix Kitchen Tap: Waterdrop G3P800 →

2. Water Heater, Dishwasher & Fixtures

7.9 gpg (135 mg/L) Hard Water

At 7.9 grains per gallon, calcium and magnesium carbonate crust inside tank and tankless water heaters, cutting heating efficiency by up to 24% and leaving white chalky spots on glass shower doors and faucets.

Fix Scale: SpringWell Whole-House →

3. Shower Steam, Skin & Hair

Chloramine & 48.9 ppb TTHMs

Dallas Water Utilities (DWU) uses chloramine (chlorine bound with ammonia) to disinfect distribution mains, producing 48.9 ppb Total Trihalomethanes (TTHMs) and 27.1 ppb Haloacetic Acids that volatilize in hot showers and dry out sensitive skin.

Compare Aquasana Rhino EQ-1000 →

Engine 2 • 6-Month Cartridge Continuity

Free 6-Month Replacement Filter Reminder

Saturated carbon pre-filters allow PFAS and chlorine breakthrough after 6 months (causing membrane fouling). Pick your system below and we will email your exact OEM cartridge match when it is time to swap.

Engine 3 • Local Licensed Water Pros

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