94030

Millbrae, CA

San Mateo County · San Francisco-Oakland-Fremont, CA metro area

CITY OF MILLBRAE

Is Millbrae tap water safe to drink?

Source: Official EPA UCMR5 federal monitoring data. Last tested May 2025.

Township:

South San Francisco CCD, CA

Neighborhoods:

Millbrae
San Mateo Park
Vallemar
Red Arrow Mobile Home Park
Fairway Park
Linda Mar

The short answer for Millbrae

Millbrae tap water has 1 detected contaminant, currently below EPA limits (tested December 2023). 8:2 FTS measured closest to the threshold. See the full compound-by-compound report.

The health risk for Millbrae

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) December 2023

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 Millbrae 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 Millbrae 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: December 2023 · Hetch Hetchy Treated	0.005 µg/L	0.005 µg/L	100% of limit

View all tested compounds

Harry Tracy Treatment Plant · Tested: December 2023

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

Hetch Hetchy Treated · Tested: December 2023

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

SFWD Intertie · Tested: May 2025

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

Sunol Treatment Plant · Tested: December 2023

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 94030

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

CITY OF MILLBRAELooks OK

Modeled boundaries are shown with a dashed outline.

Frequently Asked Questions about ZIP 94030 Tap Water

What's in ZIP 94030 tap water?

ZIP 94030 has 1 detected contaminant below EPA limits in this dataset. 8:2 FTS measured closest to its guideline.

Will boiling ZIP 94030 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 94030, 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 94030?

Public records identify CITY OF MILLBRAE as a primary water system associated with ZIP 94030. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 94030 tap water last tested?

The most recent test date used in this report is May 2025. EnviroClarity last refreshed this page on 2026-05-04.

Where can I find the official water quality report for ZIP 94030?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact CITY OF MILLBRAE or visit their website for the latest official report covering ZIP 94030. 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 May 2025

Last page update 2026-05-04

Check another ZIP code

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 Millbrae tap water → see certified options