63105
Clayton, MO
St. Louis County · St. Louis, MO-IL metro area
MO AMERICAN ST LOUIS ST CHARLES COUNTIES

Is Clayton tap water safe to drink?

Higher concern
Last tested: December 2024
Source: Official EPA UCMR5 federal monitoring data. Last tested December 2024.
Township:
  • Hadley, MO
Community:
  • Saint Louis, MO

The short answer for Clayton

Clayton tap water has 2 contaminants above EPA guidelines, including lithium at 6.3× the limit (tested December 2024). See the full compound-by-compound breakdown and filter recommendations.

The health risk for Clayton

lithium has been detected above EPA limits in this water system's recent tests. A certified filter designed for this contaminant type is strongly recommended.
  • lithium above limit.
lithium concentration (µg/L) December 2024
0 µg/L 10 µg/L 100 µg/L
62.600 µg/L
Detected
µg/L
10 µg/L
EPA limit
guideline
526% above limit
Comparison
vs. guideline
EPA limit: 10 µg/L | Your water: 62.600 µg/L
Certified Filters for Clayton Tap Water

lithium was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.

Water filter recommendation for Clayton tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
Epic Pure XP Water Filter Pitcher
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
NSF/ANSI 42, 53, 401 & P473Removes 99.99% PFASMade in USABPA-free
Best for renters or quick setup. No installation needed.
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Most elevated compounds
Compound Measurement EPA Limit Comparison
lithium
Tested: December 2024 · MO AMERICAN ST LOUIS ST CHARLES COUNTIES		 62.600 µg/L 10 µg/L 526% above limit
lithium
Tested: December 2024 · ST LOUIS CITY PWS		 36.300 µg/L 10 µg/L 263% above limit
View all tested compounds

MO AMERICAN ST LOUIS ST CHARLES COUNTIES · Tested: December 2024

Compound Measurement EPA Limit Comparison
lithium 62.600 µg/L 10 µg/L 526% above 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

ST LOUIS CITY PWS · Tested: December 2024

Compound Measurement EPA Limit Comparison
lithium 36.300 µg/L 10 µg/L 263% above 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 63105

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

Modeled boundaries are shown with a dashed outline. Outlines appear when service-area boundary data is available for this ZIP.

Frequently Asked Questions about ZIP 63105 Tap Water

What contaminants are above EPA limits in ZIP 63105?

ZIP 63105 has 2 contaminants above EPA health guidelines in the latest available data, including lithium at 6.3x the EPA guideline. The full table on this page lists every tested compound and its measured level.

Will boiling ZIP 63105 tap water remove lithium?

No. Boiling tap water does not remove lithium. Lithium is a dissolved mineral, so heat does not break it down and evaporation can actually concentrate it. Reverse osmosis (NSF/ANSI 58) is the most reliable at-home option for reducing lithium.

Do basic pitcher filters remove lithium?

Standard pitcher filters are not certified to reduce lithium. Reverse osmosis (NSF/ANSI 58) is the most widely available home option for reducing lithium in drinking water.

Who provides tap water in ZIP 63105?

Public records identify MO AMERICAN ST LOUIS ST CHARLES COUNTIES as a primary water system associated with ZIP 63105. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 63105 tap water last tested?

The most recent test date used in this report is December 2024. EnviroClarity last refreshed this page on 2026-05-05.

Where can I find the official water quality report for ZIP 63105?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact MO AMERICAN ST LOUIS ST CHARLES COUNTIES or visit their website for the latest official report covering ZIP 63105. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (lithium: 10 µg/L)
Last tested December 2024
Last page update 2026-05-05

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.

    Protect your water in Clayton → see certified filters