Is McKinney tap water safe to drink?

Yes but with caveats

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

78/100
Purity Score
3
Issues Found
9.8 GPG
Hardness
Not detected
PFAS

3 Issues Detected in McKinney

Moderately Hard Water (9.8 GPG)

Hardness above 7 GPG can cause minor scale buildup.

Hardness data for McKinney

Moderate Chlorine Level

Chlorine within EPA limits but may affect taste.

Chlorine info for McKinney

Arsenic Approaching Limit (0.4 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for McKinney
Texas

750,697,507,075,071 · Lake Lavon

McKinney, TX Water Quality Report

Moderate Risk Updated March 2026 199,177 residents
See Best Filters for McKinney
78
Purity Score

Contaminant Levels

PFAS
ND
Lead
3 ppb
Nitrate
0.8 mg/L
Arsenic
0.4 mg/L
Hardness
9.8 gpg

Health Insights

  • 1
    At 9.8 GPG, McKinney's water qualifies as moderately hard. This can cause limescale in pipes and shorten appliance lifespan.
  • 2
    Chlorine levels may affect the taste of McKinney's tap water. A carbon filter improves flavor.

Score

78 /100
Good
"Good" threshold (70)

McKinney tap water is sourced from Lake Lavon and treated by North Texas Municipal Water District. Water hardness is hard at 9.8 GPG which may cause scale buildup. Overall purity score: 78/100 (Good). Updated for 2026.

Fix Your Water

Best filters matched to McKinney's 3 issues.

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McKinney Water FAQ

Is McKinney TX tap water safe to drink in 2026?
McKinney tap water meets EPA federal drinking water standards and scores 78/100 (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 McKinney TX use chlorine or chloramine for disinfection?
McKinney 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 McKinney TX water and what is the TDS level?
McKinney water hardness is 9.8 grains per gallon (hard) with a TDS of 345 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 McKinney TX drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in McKinney drinking water.
What is the best water filter for McKinney?
Based on McKinney's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. McKinney has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

Nearby Reports

HoustonTexas — 59/100DallasTexas — 64/100College StationTexas — 69/100LubbockTexas — 71/100San AntonioTexas — 73/100MidlandTexas — 73/100

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • North Texas Municipal Water District CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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