94303
Palo Alto, CA
San Mateo County · San Francisco-Oakland-Fremont, CA metro area
CITY OF EAST PALO ALTO

Is tap water in The Willows (94303) safe to drink?

Looks OK
Last tested: July 2024
Looks OK
Source: Official EPA UCMR5 federal monitoring data. Last tested July 2024.
Cities:
Townships:
  • San Jose CCD, CA
  • San Mateo CCD, CA
Neighborhoods:
  • The Willows
  • Belle Haven
  • Vintage Oaks
  • Henderson
  • Linfield Oaks
  • Lindenwood

The short answer for The Willows (94303)

Palo Alto tap water tested within EPA guidelines across all compounds checked (tested July 2024). See the complete test results, measurements, and what was tested.

The health risk for Palo Alto

Your water system was tested for chemical contaminants. No exceedances were detected in the most recent test period.
  • All tested compounds were below lab detection limits.
PFAS & other tested compounds (parts per trillion (ppt)) July 2024
0 EPA limit Not detected
Not detected
Detected
measurement
Below detection limit
EPA limit
guideline
Below limit
Comparison
vs. guideline
EPA limit: Below detection limit | Your water: Not detected
Recommended Filters for Palo Alto Tap Water

Certified filtration options for common tap-water contaminants.

Water filter recommendation for Palo Alto tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
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Most elevated compounds

No compounds above or close to EPA limits in available data.

View all tested compounds

SFPUC Intertie · Tested: June 2024

Compound Measurement EPA Limit Comparison
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

SFWD Intertie · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
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 94303

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 94303 Tap Water

What's in ZIP 94303 tap water?

ZIP 94303 did not show contaminants above EPA health guidelines in the latest available dataset. The full table on this page lists every compound that was tested.

Who provides tap water in ZIP 94303?

Public records identify CITY OF EAST PALO ALTO as a primary water system associated with ZIP 94303. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 94303 tap water last tested?

The most recent test date used in this report is July 2024. EnviroClarity last refreshed this page on 2026-05-04.

Where can I find the official water quality report for ZIP 94303?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact CITY OF EAST PALO ALTO or visit their website for the latest official report covering ZIP 94303. The EPA also maintains a national CCR locator.

Do I still need a water filter in ZIP 94303?

Even when EPA-tracked compounds are within limits, some households use a certified filter for taste, odor, or to add a margin against trace contaminants below the reporting limit. Match any filter's certifications (NSF/ANSI 42, 53, 58, or P473) to the specific compounds you care about.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (PFPeA: 0,003 µg/L)
Last tested July 2024
Last page update 2026-05-04

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

    Add peace of mind → see certified filters for Palo Alto