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PUBLIC WATER SYSTEM REPORT

Is GOLDEN STATE WATER COMPANY - LOS OSOS Water Safe to Drink in 2026?

California · PWSID CA4010017 · Ground water

Population served
5,924
Cities served
—
State / jurisdiction
California (CA)
PWSID
CA4010017
B
TAP WATER GRADE
Fair
Model score 73/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
PFAS compounds detected in UCMR5 monitoring

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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFHxSregulated
8.8
10 ppt
Within / n/a
MCL exceedance
PFHxA
4.3
—
Within / n/a
Unregulated (monitored)
PFPeA
3.4
—
Within / n/a
Unregulated (monitored)
PFBS
3.2
—
Within / n/a
Unregulated (monitored)

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

VIOLATIONS HISTORY (FEDERAL SNAPSHOT)

EPA’s national SDWA quarterly files associate 0 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.

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WHAT TO DO ABOUT IT

Based on GOLDEN STATE WATER COMPANY - LOS OSOS's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.

TOP PICKS FOR GOLDEN STATE WATER COMPANY - LOS OSOS
⚠ PFAS detected (UCMR5)
#1
Clearly Filtered 3.5L Pitcher
BEST FOR PFAS & LEAD
Clearly Filtered  ·  ~$90
Only pitcher certified to remove PFAS at 99.9%. NSF 42/53/244/401/P473 — 365+ contaminants.
WHY THIS FOR GOLDEN STATE WATER COMPANY - LOS OSOS · Chosen for GOLDEN STATE WATER COMPANY - LOS OSOS because PFAS compounds appear in UCMR5 monitoring for this PWS. Reverse osmosis is the most effective certified residential technology for PFAS.
#2
Waterdrop Pitcher Filter
BEST VALUE
Waterdrop  ·  ~$40
7-stage filtration, 200-gallon life. Removes chlorine, PFOA/PFOS, heavy metals. No installation.
#3
ZeroWater 10-Cup Pitcher
REMOVES TDS
ZeroWater  ·  ~$40
Reduces TDS to zero. NSF 42/53 certified for lead, chromium, and arsenic. Includes TDS meter.
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