78645
Lago Vista, TX
Travis County · Austin-Round Rock-San Marcos, TX metro area
CITY OF LAGO VISTA

Is Lago Vista tap water safe to drink?

Some concern
Last tested: October 2025
Source: Official EPA UCMR5 federal monitoring data. Last tested October 2025.
City:
Township:
  • Northwest Travis CCD, TX
Community:
  • Leander, TX
Neighborhood:
  • Marshall Ford

The short answer for Lago Vista

Lago Vista tap water has 3 detected contaminants, currently below EPA limits (tested October 2025). 8:2 FTS measured closest to the threshold. See the full compound-by-compound report.

The health risk for Lago Vista

PFAS traces were detected in local water tests, though levels are currently below EPA limits. Since no amount of PFAS is considered completely safe by health researchers, a certified filter adds a meaningful layer of protection, especially for children.
  • PFAS or other chemicals detected; no confirmed exceedances in multiple samples.
8:2 FTS concentration (µg/L) October 2025
0 µg/L 0.005 µg/L 0.01 µg/L
0.005 µg/L
Detected
µg/L
0.005 µg/L
EPA limit
guideline
100% of limit
Comparison
vs. guideline
EPA limit: 0.005 µg/L | Your water: 0.005 µg/L
Add a Layer of Protection for Lago Vista Tap Water

8:2 FTS (a PFAS 'forever chemical') was detected below EPA limits. A certified filter can still add an extra layer of protection.

Water filter recommendation for Lago Vista tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
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Most elevated compounds
Compound Measurement EPA Limit Comparison
8:2 FTS
Tested: October 2025 · SWTP		 0.005 µg/L 0.005 µg/L 100% of limit
4:2 FTS
Tested: February 2025 · CITY OF LAGO VISTA		 0.003 µg/L 0.003 µg/L 100% of limit
lithium
Tested: December 2024 · CITY OF LAGO VISTA		 9.390 µg/L 10 µg/L 94% of limit
View all tested compounds

CITY OF LAGO VISTA · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
4:2 FTS 0.003 µg/L 0.003 µg/L 100% of limit
lithium 9.390 µg/L 10 µg/L 94% of limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

SWTP · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
8:2 FTS 0.005 µg/L 0.005 µg/L 100% of limit
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Water utilities serving ZIP 78645

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

Frequently Asked Questions about ZIP 78645 Tap Water

What's in ZIP 78645 tap water?

ZIP 78645 has 3 detected contaminants below EPA limits in this dataset. 8:2 FTS measured closest to its guideline.

Will boiling ZIP 78645 tap water remove 8:2 FTS?

Boiling tap water can kill many pathogens, but it does not remove most chemical contaminants tracked in EPA monitoring. Several dissolved contaminants can even concentrate as water evaporates. For the chemical contaminants reported in ZIP 78645, a certified filter is more reliable.

Do basic pitcher filters remove 8:2 FTS?

Basic pitcher filters are typically rated for chlorine, taste, and odor (NSF/ANSI 42), not for the broader list of contaminants tracked in EPA monitoring. Match the certification (NSF/ANSI 42, 53, 58, or P473) to the specific compounds listed in this report before assuming a filter helps.

Who provides tap water in ZIP 78645?

Public records identify CITY OF LAGO VISTA as a primary water system associated with ZIP 78645. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 78645 tap water last tested?

The most recent test date used in this report is October 2025. EnviroClarity last refreshed this page on 2026-05-05.

Where can I find the official water quality report for ZIP 78645?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact CITY OF LAGO VISTA or visit their website for the latest official report covering ZIP 78645. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (8:2 FTS: 0,005 µg/L)
Last tested October 2025
Last page update 2026-05-05

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    Nearby ZIP reports

    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Filter Lago Vista tap water → see certified options