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PUBLIC WATER SYSTEM REPORT

Is PRESIDIO OF SAN FRANCISCO Water Safe to Drink in 2026?

California · PWSID CA3810700 · Surface water

Population served
3,500
Cities served
—
State / jurisdiction
California (CA)
PWSID
CA3810700
F
TAP WATER GRADE
High Risk
Model score 42/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
14 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS compounds detected in UCMR5 monitoring
CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFPeA
8.9
—
Within / n/a
Unregulated (monitored)
PFHxA
6.8
—
Within / n/a
Unregulated (monitored)
PFBA
6.2
—
Within / n/a
Unregulated (monitored)
PFBS
4.9
—
Within / n/a
Unregulated (monitored)
PFHxSregulated
4.6
10 ppt
Within / n/a
MCL exceedance
PFOAregulated
4.0
4 ppt
Within / n/a
MCL exceedance
PFHpA
3.1
—
Within / n/a
Unregulated (monitored)

Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS

Official Consumer Confidence Report (CCR)

The official 2026 CCR for PRESIDIO OF SAN FRANCISCO has not yet been published on WaterCheckup.

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Residents: Your public water system is required by EPA to publish an annual CCR by July 1st each year. Contact PRESIDIO OF SAN FRANCISCOdirectly to request a copy, or check the EPA's national CCR portal at cfpub.epa.gov/ccr.

VIOLATIONS HISTORY (FEDERAL SNAPSHOT)

EPA’s national SDWA quarterly files associate 14 violation-related records with this system in the same reporting quarter as the public water system snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.

Get alerts if this system's EPA data changes:
WHAT TO DO ABOUT IT

Based on PRESIDIO OF SAN FRANCISCO's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.

Clean water splash — certified water filter recommendations

Certified Filter Recommendations

Matched to what's actually in your water

TOP PICKS FOR PRESIDIO OF SAN FRANCISCO
⚠ EPA violations / contaminants in monitoring data
#1
Waterdrop G3P600 RO
EDITORS PICK
Waterdrop  ·  ~$439
Tankless 600 GPD, removes 99%+ PFAS & lead, 10-stage filtration. Smart faucet TDS display.
WHY THIS FOR PRESIDIO OF SAN FRANCISCO · Chosen for PRESIDIO OF SAN FRANCISCO because the latest federal SDWA snapshot lists substantial violation activity. Certified reverse osmosis provides the broadest residential barrier for households that want margin beyond legal compliance.
#2
Aquasana SmartFlow RO
MOST CERTIFIED
Aquasana  ·  ~$449
WQA Gold Seal + NSF 42/53/58/401. Most certifications of any under-sink RO. Removes 90+ contaminants.
#3
AquaTru Under-Sink RO
EASIEST FILTER CHANGE
AquaTru  ·  ~$375
NSF 42/53/58 certified. Quick-change filters, no tools. Compact tankless design, 4-stage filtration.
Not sure which filter is right for you? Take the 3-question quiz →
See all public water systems in California →
STAY INFORMED
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