1
Hard water (9.8 gpg) can cause scale buildup in pipes and appliances but is generally safe to drink.
2
Chlorine levels are within EPA limits but may affect taste and smell.

Current Score

78 / 100

Good

"Good" threshold (70)

Frisco 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.

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

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The Best Water Filter For Frisco Homes

Matched to local water issues and filtration standards.

Best for Frisco

Waterdrop 10UA Under-Sink Filter

Under-Sink Carbon Filter

Price Range $40–60

Top Pick for Frisco

Waterdrop 10UA Under-Sink Filter

Frisco has elevated chlorine residuals. An under-sink carbon filter removes chlorine and disinfection byproducts at the tap.

Why this fits Frisco

Removes chlorine and chloramine taste and odor
Reduces disinfection byproducts THMs and HAAs
Easy installation and filter lasts 6 to 12 months

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Frequently Asked Questions

Is Frisco TX tap water safe to drink in 2026?

Frisco 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 Frisco TX use chlorine or chloramine for disinfection?

Frisco 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 Frisco TX water and what is the TDS level?

Frisco 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 Frisco TX drinking water?

Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Frisco drinking water.