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Ripley County PWSD 1 West

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

Serves
940 people
Connections
396
Water source
Groundwater
Based in
Doniphan, MO
County
Ripley
Owner
Local government
The ZIP code it serves

63935

The short answer

1 result is above the health goal. The worst: Uranium, above the health goal. 12 health-based violations since 2016.

What handles it

What was found

Uranium, nitrate and arsenic: 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.

Chromium (total) and fluoride: EPA’s compliance monitoring file, samples taken from Oct. 17, 2012 to Oct. 17, 2018. Newer results are in the utility’s annual water quality report.

Above the health goal1

Uranium

Comes from the source

Above the health goal

1.2ppb

Highest yearly average, 2020 to 2021

Averaged by year, the highest was 1.2 ppb, in 2021: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.4 ppb, in 2018.

What handles it

Below EPA’s limits3

Chromium (total)

Comes from the source

Below EPA’s limits

4.9ppb

Highest yearly average, 2012 to 2018

2018: not found

Averaged by year, the highest was 4.9 ppb, in 2012, below EPA’s legal limit of 100 ppb. Its highest single sample was 6.3 ppb. In 2018, the latest year on file, it wasn’t found in any of its three samples.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.25ppm

Highest yearly average, 2020 to 2023

2023 average: 0.2 ppm

Averaged by year, the highest was 0.25 ppm, in 2021, below EPA’s legal limit of 10 ppm. In 2023, the latest year on file, it averaged 0.2 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.86 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

0.04ppm

Highest yearly average, 2012 to 2018

2018: not found

Averaged by year, the highest was 0.04 ppm, in 2012, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.12 ppm. In 2018, the latest year on file, it wasn’t found in any of its three samples.

What handles it

2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Lead

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.”

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

None of the filters TapBuff has checked so far carry these claims. Search the certifier listings for the claim above.

Compare five-year costs

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Gross alpha radiation (excluding radon and uranium)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2020 to June 30, 202116 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2020 to June 30, 202111.8 PCI/LResolved
Gross alpha radiation (excluding radon and uranium)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2020 to March 31, 202116.7 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2020 to March 31, 202112.3 PCI/LResolved
Gross alpha radiation (excluding radon and uranium)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2020 to Dec. 31, 202017.2 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2020 to Dec. 31, 202012.2 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2019 to Sept. 30, 202011.5 PCI/LResolved
Gross alpha radiation (excluding radon and uranium)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2019 to Sept. 30, 202017.8 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2019 to June 30, 202010.1 PCI/LResolved
Gross alpha radiation (excluding radon and uranium)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2019 to June 30, 202019.8 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2019 to March 31, 20206.8 PCI/LResolved
Gross alpha radiation (excluding radon and uranium)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2019 to March 31, 202015.5 PCI/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 1 monitoring or reporting violation not shown.

What this report can’t tell you

  • Everything else. Uranium, nitrate and arsenic results here are Missouri’s yearly averages as CDC publishes them, from 2020 on, with EPA’s national file for 2012 to 2019. Chromium (total) and fluoride come from EPA’s file alone, which ends in 2019. Ripley County PWSD 1 West’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 Oct. 17, 2012 to Oct. 17, 2018.

Testing your own tap

Ripley County PWSD 1 West’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 lab Missouri certifies closest to the area Ripley County PWSD 1 West serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Perfect Water Testing

    Salem, MO · about 71 miles

    Certified for bacteria

    (573) 729-6451

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 MO4024522. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Ripley County

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