Is Combined Locks tap water safe to drink?

Source: Official EPA UCMR5 federal monitoring data | Last tested July 2023

Can you drink the tap water in Combined Locks?

Combined Locks tap water has 1 detected contaminant, currently below EPA limits (tested July 2023). lithium measured closest to the threshold. See the full compound-by-compound report.

Recommended for Combined Locks tap water

Pitcher filter

Epic Pure XP Water Filter Pitcher

NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.

Detected contaminants are below EPA limits. A certified filter adds an extra layer of protection.

See price on Amazon

The health risk for Combined Locks

lithium was detected in local water tests, currently below EPA limits. Even below-limit detections can still be meaningful for sensitive households, so a targeted certified filter can add protection.

PFAS or other chemicals detected; no confirmed exceedances in multiple samples.

lithium concentration (µg/L) July 2023

0 µg/L 10 µg/L 20 µg/L

10.000 µg/L

Detected

µg/L

10 µg/L

EPA limit

guideline

100% of limit

Comparison

vs. guideline

EPA limit: 10 µg/L | Your water: 10.000 µg/L

Add a Layer of Protection for Combined Locks Tap Water

lithium was detected below EPA limits. A certified filter can still add an extra layer of protection.

Pitcher filter

Epic Pure XP Water Filter Pitcher

NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.

Best for renters or quick setup. No installation needed.

See price on Amazon

Under-sink RO system

Waterdrop G3P600 Reverse Osmosis System

8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.

Best for homeowners. Heavy-duty filtration for long-term protection.

See price on Amazon

Most elevated compounds

Compound	Measurement	EPA Limit	Comparison
lithium Tested: July 2023 · Entry Point Facility	10.000 µg/L	10 µg/L	100% of limit

View all tested compounds

Entry Point Facility · Tested: July 2023

Compound	Measurement	EPA Limit	Comparison
lithium	10.000 µg/L	10 µg/L	100% of limit
HFPO-DA	<0.005 µg/L	0.01 µg/L	Below limit
PFNA	<0.004 µg/L	0.01 µg/L	Below limit
PFHxS	<0.003 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

Primary source EPA UCMR5 (2023-2025)

Guideline source EPA drinking water standard (9Cl-PF3ONS: 0,002 µg/L)

Last tested July 2023

Last page update 2026-03-31

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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.

Filter Combined Locks tap water → see certified options