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Clarence Cannon Wholesale WTR Comm

What EPA’s and CDC’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals, plus violations since 2016, with the certification that handles each result.

Serves
25 people
Connections
49
Water source
Surface water
Based in
Stoutsville, MO
County
Monroe
Owner
Local government
The ZIP code it serves

65283

The short answer

1 result is above the health goal. The worst: Arsenic, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Arsenic, total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate: Missouri’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2020 to 2023, with EPA’s 2012 to 2019 file for earlier years.

Fluoride and chromium (total): EPA’s compliance monitoring file, samples taken from Nov. 6, 2012 to Nov. 25, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal1

Arsenic

Comes from the source

Above the health goal

1.0ppb

Highest yearly average, 2020 to 2023

Averaged by year, the highest was 1.0 ppb, in 2023: below EPA’s legal limit of 10 ppb, but above its health goal of zero. That was also the latest year on file.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

45.9ppb

Highest yearly average, 2020 to 2023

2023 average: 35.6 ppb

Averaged by year, the highest was 45.9 ppb, in 2022, below EPA’s legal limit of 80 ppb. In 2023, the latest year on file, it averaged 35.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 49.4 ppb, in 2015.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

27.6ppb

Highest yearly average, 2020 to 2023

2023 average: 22.6 ppb

Averaged by year, the highest was 27.6 ppb, in 2020, below EPA’s legal limit of 60 ppb. In 2023, the latest year on file, it averaged 22.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 41.5 ppb, in 2014.

What handles it

No certification claim covers this compound yet.

Nitrate

Comes from the source

Below EPA’s limits

0.55ppm

Highest yearly average, 2020 to 2023

2023 average: 0.36 ppm

Averaged by year, the highest was 0.55 ppm, in 2020, below EPA’s legal limit of 10 ppm. In 2023, the latest year on file, it averaged 0.36 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.6 ppm, in 2014.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.2ppm

Highest yearly average, 2012 to 2019

2019: not found

Averaged by year, the highest was 0.2 ppm, in 2012, below EPA’s legal limit of 4.0 ppm. In 2019, the latest year on file, it wasn’t found in its one sample.

What handles it

Chromium (total)

Comes from the source

Below EPA’s limits

3.4ppb

Highest yearly average, 2012 to 2019

2019: not found

Averaged by year, the highest was 3.4 ppb, in 2012, below EPA’s legal limit of 100 ppb. In 2019, the latest year on file, it wasn’t found in its one sample.

What handles it

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best reverse osmosis systems, ranked

Violations since 2016

No health-based violations on file with EPA since 2016.

What this report can’t tell you

  • Everything else. Arsenic, total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate results here are Missouri’s yearly averages as CDC publishes them, from 2020 on, with EPA’s national file for 2012 to 2019. Fluoride and chromium (total) come from EPA’s file alone, which ends in 2019. Clarence Cannon Wholesale WTR Comm’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; CDC’s yearly averages for Missouri cover 2020 to 2023; EPA’s compliance samples are from Nov. 6, 2012 to Nov. 25, 2019.

Testing your own tap

Clarence Cannon Wholesale WTR Comm’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Missouri certifies.

The 3 labs Missouri certifies closest to the area Clarence Cannon Wholesale WTR Comm serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Associated Electric Cooperatives Inc. (AECI)

    Clifton Hill, MO · about 44 miles

    Certified for bacteria

    (660) 261-3283

  • Columbia Water and Light Department Power Plant

    Columbia, MO · about 47 miles

    Certified for bacteria

    (573) 874-6242

  • Engineering Surveys & Services

    Columbia, MO · about 47 miles

    Certified for bacteria

    (573) 449-2646

Missouri State Public Health Laboratory: Coliform and E. coli testing for private wells and other private drinking water sources, in kits from your local public health agency. A free state courier can carry the sample to the lab overnight. The handling fee is $10, by check or money order. Private Drinking Water Bacteriological Testing, Missouri Department of Health and Senior Services.

All 64 certified labs for Missouri

Sources

PWSID MO2020421. Rebuilt from EPA data on Oct. 18, 2026.

Also in Monroe County

All Missouri utilities

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