65101
Jefferson City, MO
Cole County · Jefferson City, MO metro area
MO AMERICAN JEFFERSON CITY DISTRICT

Is tap water in Osage (65101) safe to drink?

Some concern
Last tested: June 2025
Source: Official EPA UCMR5 federal monitoring data. Last tested June 2025.
Cities:
Townships:
  • Osage, MO
  • Liberty, MO
  • Jefferson, MO
  • Clark, MO
Neighborhood:
  • Jefferson City

The short answer for Osage (65101)

Jefferson City tap water has 1 detected contaminant, currently below EPA limits (tested June 2025). 4:2 FTS measured closest to the threshold. See the full compound-by-compound report.

The health risk for Jefferson City

PFAS traces were detected in local water tests, though levels are currently below EPA limits. Since no amount of PFAS is considered completely safe by health researchers, a certified filter adds a meaningful layer of protection, especially for children.
  • PFAS or other chemicals detected; no confirmed exceedances in multiple samples.
4:2 FTS concentration (µg/L) June 2025
0 µg/L 0.003 µg/L 0.01 µg/L
0.003 µg/L
Detected
µg/L
0.003 µg/L
EPA limit
guideline
100% of limit
Comparison
vs. guideline
EPA limit: 0.003 µg/L | Your water: 0.003 µg/L
Add a Layer of Protection for Jefferson City Tap Water

4:2 FTS (a PFAS 'forever chemical') was detected below EPA limits. A certified filter can still add an extra layer of protection.

Water filter recommendation for Jefferson City tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
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Most elevated compounds
Compound Measurement EPA Limit Comparison
4:2 FTS
Tested: June 2025 · COLE COUNTY PWSD 4		 0.003 µg/L 0.003 µg/L 100% of limit
View all tested compounds

COLE COUNTY PWSD 2 · Tested: December 2024

Compound Measurement EPA Limit Comparison
lithium <9.000 µg/L 10 µg/L Below 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

COLE COUNTY PWSD 4 · Tested: June 2025

Compound Measurement EPA Limit Comparison
4:2 FTS 0.003 µg/L 0.003 µg/L 100% of limit
lithium <9.000 µg/L 10 µg/L Below 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 65101

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.

Frequently Asked Questions about ZIP 65101 Tap Water

What's in ZIP 65101 tap water?

ZIP 65101 has 1 detected contaminant below EPA limits in this dataset. 4:2 FTS measured closest to its guideline.

Will boiling ZIP 65101 tap water remove 4:2 FTS?

Boiling tap water can kill many pathogens, but it does not remove most chemical contaminants tracked in EPA monitoring. Several dissolved contaminants can even concentrate as water evaporates. For the chemical contaminants reported in ZIP 65101, a certified filter is more reliable.

Do basic pitcher filters remove 4:2 FTS?

Basic pitcher filters are typically rated for chlorine, taste, and odor (NSF/ANSI 42), not for the broader list of contaminants tracked in EPA monitoring. Match the certification (NSF/ANSI 42, 53, 58, or P473) to the specific compounds listed in this report before assuming a filter helps.

Who provides tap water in ZIP 65101?

Public records identify MO AMERICAN JEFFERSON CITY DISTRICT as a primary water system associated with ZIP 65101. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 65101 tap water last tested?

The most recent test date used in this report is June 2025. EnviroClarity last refreshed this page on 2026-05-05.

Where can I find the official water quality report for ZIP 65101?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact MO AMERICAN JEFFERSON CITY DISTRICT or visit their website for the latest official report covering ZIP 65101. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (4:2 FTS: 0,003 µg/L)
Last tested June 2025
Last page update 2026-05-05

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    Nearby ZIP reports

    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Filter Jefferson City tap water → see certified options