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Wrong David Paris?

Mr. David Paris

Assistant Director

Manchester City Library

Direct Phone: (603) ***-**** ext. ***       

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Manchester City Library

405 Pine Street

Manchester, New Hampshire 03104

United States

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Background Information

Employment History


City of Manchester

City's Water Supply Administrator



Board Member
New Hampshire Water Works Association Inc

Board Member
New England Water Works Association

Web References (35 Total References)

Normandeau Associates, Inc. - In the News [cached]

Congratulations to Dave Paris of Manchester Water Works and Mike Covellone of Providence Water Supply who were elected President and President-Elect of NEWWA at the meeting, as well as to NEWWA Executive Director Ray Raposa for another outstanding conference.

Dave Paris of the ... [cached]

Dave Paris of the Manchester Water Works gave a fantastic presentation on how the City selected the process, did evaluations and reviews and implemented their plan.Ozone, the chemical of the future.


Dave Paris of Manchester Water Works and a Hooksett resident (14 South Bow Road) stated they were mandated to use fluoride after the referendum passed it.At that time, he was assigned to set up water fluoridation.The type they use is a high quality fluoride.He added that the concentration of fluoride in water is one part per million which is minimal and within the standards of the FDA.

Of the half-dozen chemical supply companies ... [cached]

Of the half-dozen chemical supply companies that initially expressed interest in selling to Manchester what is referred to in the business as silly acid , only one , Solvay Fluorides Inc. of Allston , Mass. , offered an analysis of each railcar load of its product and expressed a willingness to meet the city's stringent standards , according to David Paris , water supply administrator for Manchester Water Works.We ( the Manchester Board of Water Commissioners ) wrote a specification for hydrofluosilicic acid that. . . would limit the amount of impurities to one-twentieth of what the national standards would allow.We felt that was an appropriate , prudent step on our part and we currently are under contract with a supplier who is meeting that , Paris said of Solvay.Manchester will spend about $55 , 000 a year for its liquid acid , about one-third what it would cost for an equivalent amount of sodium fluoride , the powdered product that is better suited for small water systems.Both the acid and the dry sodium fluoride are derived from the chemical-laced scrubber gases generated during the refining of ore to make phosphate fertilizer.They would be labeled hazardous waste if not for their use as water fluoridating agents.Nine other New Hampshire communities fluoridate their drinking water : Concord , Dover , Portsmouth and Rochester use hydrofluosilicic acid ; Durham , Hanover , Laconia , Lancaster and Lebanon add powdered or crystallized sodium fluoride.The Sunday News contacted water works officials in Concord , Dover , Rochester , Durham , Hanover , Laconia and Lebanon.They all said they do not analyze their fluoridation chemicals , confident that what is sold to them meets purity standards set by the chemical industry and the American Water Works Association.

The Bedford Bulletin Archives, March 22, 2001 [cached]

According to the Manchester Water Works Water Supply Manager David Paris, Manchester does add hydrofluorisilicic (HFS) acid and not pure fluoride to its water supply.

Paris said he is not sure, but it is very likely the compound is a by-product of the fertilizer industry.
Paris also confirmed the presence of arsenic and lead in the HFS acid, but he said the compound is highly processed and purified, making it safe for human consumption.
He also said Manchester actually made its standards for levels of arsenic and lead more stringent when they began the fluoridation in Manchester.
Paris said fluoride is too unstable as a pure compound and HFS is actually the least dangerous way to add it to drinking water, as well as being the most cost effective.

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