Fluoride Action Network

Lincoln County PWSD 1 Has Levels of Fluoride Above Drinking Water Standards

Public Notice: Lincoln County PWSD 1, State Water System ID#: MO6024340.
Posted on December 31st, 2019
Location: United States, Missouri


LINCOLN COUNTY PWSD 1 Has Levels of Fluoride Above Drinking Water Standards

Este informe contiene informacion muy importante sobre su agua potable. Traduzcalo o hable con alguien que lo entienda bien.

Our water system recently violated a drinking water standard Although this is not an emergency, as our customers, you have a right to know what happened, what you should do, and what we are doing to correct this situation.

Analyte Running Annual Average (RAA)
for period ending December 31, 2019
RAA Unit of
Measure (UOM)
Fluoride 4.2 ppm 4 parts per million (ppm)

We routinely monitor for the presence of drinking water contaminants. Testing results based on a running annual average (RAA) of quarterly samples show that our system exceeds the standard or maximum contaminant level (MCL). (See table above.)

What should I do?

You do not need to use an alternative (e.g., bottled) water supply. However, if you have specific health concerns, consult your doctor.

What does this mean?

• This is not an immediate risk. If it had been, you would have been notified immediately.

• Some people who drink water containing fluoride in excess of the MCL over many years could get bone disease, including pain and tenderness of the bones. Fluoride in drinking water at half the MCL or more may cause mottling of children’s teeth, usually in children less than nine years old. Mottling, also known as dental fluorosis, may include brown staining and/or pitting of the teeth, and occurs only in developing teeth before they erupt from the gums.

What happened? What is being done? (Describe corrective action.)

Fluoride is a naturally occuring presence in the water. District staff are currently exploring

*Read the full notice