Is Potrero tap water safe to drink?
- Mountain Empire CCD, CA
- Potrero
The short answer for Potrero
Potrero tap water has 6 contaminants above EPA guidelines, including PFHxS at 48.4× the limit (tested November 2024). See the full compound-by-compound breakdown and filter recommendations.
The health risk for Potrero
- PFBS, PFHpA, PFHxS, PFOA, PFOS, PFPeA above limit.
PFHxS (a PFAS 'forever chemical') was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.
Here's what actually removes PFAS from your water
The right filter eliminates PFAS at the tap. But not all filters do - and the type you choose matters for your home.
Common pitchers like Brita do not remove PFAS. You need a filter independently certified to NSF P473 (for pitcher filters) or NSF/ANSI 58 (for reverse osmosis systems). All three options below carry the relevant certification.
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| PFHxS Tested: November 2024 · Sampling Station |
0.194 µg/L | 0.004 µg/L | 4742% above limit |
| PFOA Tested: November 2024 · Sampling Station |
0.174 µg/L | 0.004 µg/L | 4262% above limit |
| PFOS Tested: November 2024 · Sampling Station |
0.064 µg/L | 0.004 µg/L | 1505% above limit |
| PFHpA Tested: November 2024 · Sampling Station |
0.048 µg/L | 0.003 µg/L | 1500% above limit |
| PFPeA Tested: November 2024 · Sampling Station |
0.036 µg/L | 0.003 µg/L | 1093% above limit |
View all tested compounds
Sampling Station · Tested: November 2024
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| PFHxS | 0.194 µg/L | 0.004 µg/L | 4742% above limit |
| PFOA | 0.174 µg/L | 0.004 µg/L | 4262% above limit |
| PFOS | 0.064 µg/L | 0.004 µg/L | 1505% above limit |
| PFHpA | 0.048 µg/L | 0.003 µg/L | 1500% above limit |
| PFPeA | 0.036 µg/L | 0.003 µg/L | 1093% above limit |
| PFBS | 0.005 µg/L | 0.003 µg/L | 53% above limit |
| PFNA | 0.008 µg/L | 0.01 µg/L | 84% of limit |
| PFHxA | 0.059 µg/L | 3 µg/L | 2% of limit |
| PFBA | 0.010 µg/L | 6 µg/L | 0.2% of limit |
| lithium | <9.000 µg/L | 10 µg/L | Below limit |
| HFPO-DA | <0.005 µg/L | 0.01 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 |
| PFDA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFDoA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFHpS | <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 91963
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- POTRERO ELEMENTARY SCHOOLAction advised
Frequently Asked Questions about ZIP 91963 Tap Water
What contaminants are above EPA limits in ZIP 91963?
ZIP 91963 has 6 contaminants above EPA health guidelines in the latest available data, including PFHxS at 48.4x the EPA guideline. The full table on this page lists every tested compound and its measured level.
Will boiling ZIP 91963 tap water remove PFHxS?
No. Boiling does not remove PFAS, and the compounds can actually become more concentrated as water evaporates. To reduce PFAS at home, use a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis).
Do basic pitcher filters remove PFHxS?
Most basic pitcher filters are only certified to NSF/ANSI 42 or 53, which do not cover PFAS. Look for a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis) on the spec sheet.
Who provides tap water in ZIP 91963?
Public records identify POTRERO ELEMENTARY SCHOOL as a primary water system associated with ZIP 91963. Service boundaries can vary by address, so confirm exact service with the utility.
When was ZIP 91963 tap water last tested?
The most recent test date used in this report is November 2024. EnviroClarity last refreshed this page on 2026-05-04.
Where can I find the official water quality report for ZIP 91963?
Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact POTRERO ELEMENTARY SCHOOL or visit their website for the latest official report covering ZIP 91963. The EPA also maintains a national CCR locator.
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.