Daily Archives: May 30, 2011

CDC Optimal Fluoride Level Proposed

The Centers for Disease Control and Prevention (CDC) proposed on January 7, 2011 that all community water systems adjust the amount of fluoride to 0.7 mg/L to achieve an optimal fluoride level.  The CDC believes the optimal level is the concentration that provides the best balance of protection from dental caries while limiting the risk of dental fluorosis.

The CDC proposal was published in the Federal Register and the public comment period has closed.  Final action has not yet been taken to adopt this optimal level.

Click here for the January 7, 2011, proposal notice.

Click here for the CDC oral health web pages and additional information on fluoride.

USEPA Proposed Fluoride Reference Dose

On January 7, 2011, USEPA announced its intent to review the drinking water regulations for fluoride.  This action is a follow up to the second Six Year Review (SY2), released March 2010.

USEPA has proposed a reference dose (RfD) for fluoride of 0.08 mg/kg/day for protection against pitting of the tooth enamel (severe dental fluorisis).  The Agency believes that this value also protects against fractures and skeletal effects in adults.  The RfD is the estimate of the daily exposure that is likely to be without harmful effect during a lifetime. A decision has not yet been made regarding any proposed revision to the current MCLG and MCL of 4 mg/L.

Click here for information on the USEPA Fluoride Risk Assessment and Relative Source Contribution (RSC).

Washington, DC Water and Sewer Authority on Lead

In 2010, Washington, DC Water and Sewer Authority undertook a rebranding campaign and is now known as “DC Water.”

H.R. 1427 Grassroots Rural and Small Community Water Systems Assistance Act

Latest Title: Grassroots Rural and Small Community Water Systems Assistance Act of 2011
Sponsor: Rep Harper, Gregg [MS-3] (introduced 4/7/2011)      Cosponsors (15)
Latest Major Action: 4/7/2011 Referred to House committee. Status: Referred to the House Committee on Energy and Commerce.

Click here for full text of bill.