Updated June 12, 2023
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Massachusetts Water Resources Authority
MWRA has completed construction and testing of the fluoride system upgrade. Fluoride feed was restarted on Monday June 12th and fluoridated water will be arriving at customer’s homes throughout the next week or so depending on the distance from the water treatment plant and local pipe network configuration.
Temporary Fluoride Shutdown
As part of a project to replace portions of the fluoride feed piping and equipment at the Carroll Water Treatment Plant serving MetroWest and metro Boston communities, MWRA will need to shut down the fluoride feed for a few months starting in late February. While fluoridation is important for dental health, health officials indicate that this short-term shutdown does not require any special additional action by consumers.
The temporary fluoride shutdown is a good reminder of everything that contributes to good dental health:
In addition to regularly drinking tap water with fluoride when it’s available, some of the tips for good oral health include:
The MWRA is a proud supplier of drinking water with fluoride for over 40 years! We look forward to completing our fluoride system maintenance and continuing to provide our more than 2 million customers in the Boston metro area with this important benefit to their good oral health.
Additional Information on the Project:
To do the work safely and to reduce the risk of operational problems, MWRA plans on using the remaining fluoride in the storage tanks, draining the equipment and piping, and handing the empty system over to the contractor, which will then be able to replace all the components safely. When the work is completed, all of the new system can be safely tested and adjusted with water before reintroducing chemical, decreasing the risk of unexpected issues and reducing personnel safety risks.
The current schedule is for the work to begin in late February, with the fluoridation system being off-line of approximately three months. Check back on this page for project and schedule updates.
If you have questions about the fluoridation project, contact us at (617) 242-5323 or firstname.lastname@example.org.
MWRA maintains a target fluoride level of 0.7 ppm, as recommended by the CDC and US HHS, and EPA to reduce tooth decay. MWRA has added fluoride since the 1970s, and continuously monitors the levels. MWRA is aware that a number of people across the country sometimes raise questions about fluoride in drinking water. MWRA intends to keep an open-minded view, keep abreast of all current scientific research on the topic and pay close attention to competing viewpoints.
Even in light of recent news reports concerning fluoride, the American Academy of Pediatrics continues to recommend that children drink fluoridated tap water. The American Dental Association also states that it remains committed to fluoridation of public water supplies as the single most effective public health measure to help prevent tooth decay.
The US Centers for Disease Control and Prevention (the CDC), one of the world’s leading public health institutions, takes strong position toward promoting fluoridation to reduce tooth decay and promote community public health. The CDC is highly regarded for its scientific expertise and objectivity, and it is important to MWRA that CDC’s position on fluoridation is unequivocal. The summary of CDC’s views is included in the document: Achievements in Public Health, 1900 to 1999: Fluoridation to Prevent Dental Cavities. The also CDC published a report, Ten Great Public Health Achievements — United States 1900-1999 (PDF), that listed fluoridation of public water supplies to reduce dental cavities as one of the leading public health achievements of the entire century.
Our approach is reinforced by the views of other organizations with strong public health and medical credentials that also support fluoridation including the Massachusetts Department of Public Health, the World Health Organization, the American Dental Association and American Academy of Pediatrics.
The Environmental Protection Agency (EPA) sets fluoride standards to guard drinking water safety. For fluoride, 4.0 parts per million is the Maximum Contaminant Level Goal (MCLG), the level below which there is no known or expected risk to health. MWRA’s level of 0.7 parts per million are well below the EPA MCLG.
In 2015, MWRA lowered the amount of fluoride added to the water it supplies in accordance with a new recommendation from the Centers for Disease Control (CDC). On April 27, 2015, the CDC released a recommendation that water suppliers reduce their fluoride dosage to 0.7 milligrams per liter (mg/l) from a range between 0.7 mg/l and 1.2 mg/l. According to the CDC, the dose was lowered because Americans now receive fluoride from a variety of sources other than just water, and the dental benefits can be achieved with a lower dose in water.