• National Pure Water Association (with a Northern Ireland Branch.).
• Scottish Pure Water Association.
• North West Councils Against Fluoridation.
• N. Ireland Councils Against Fluoridation.
• National Anti-Fluoridation Campaign.
• Register of Doctors Against Fluoridation.
• National Register of Children with Dental Fluorosis.
• The Templegarth Trust.
• Safe Water Information Service.
• The Green Network.
• The Green Party.
• The Liberal Party.
• The Scottish National Party.
• The Soil Association.
• Friends of the Earth.
• Ulster Farmers' Union
• N.Ireland Public Service Alliance (nipsa.).
• N.Ireland Agricultural Producers Association.
• What Doctors Don't Tell You.

Regional Groups interacting with NPWA:

• London Against Fluoride (LondaF).
• West Yorkshire Campaign Against Fluoridation
• North & Midlands Against Fluoridation.
• Leicester & Rutland Against Fluoridation.
• Hampshire Against Fluoridation.
• Calderdale Citizens' Protest.
• Blackburn, Hyndburn & Ribble Valley Against Fluoridation.
• Scarborough Against Fluoride.
• York Against Fluoride.
• Staffordshire Against Fluoride.
• Tandragee Residents Against Fluoridation.
• Dorset & New Forest Safe Water Society.
• Isle of Wight Against Fluoridation.

US Organisations which have withdrawn their support for fluoridation in the 1990s:

• American Nurses Association.
• American Parent-Teachers Association.
• American Civil Liberties Union.
• American Cancer Society.
• American Academy of Diabetes.
• American Diabetes Association.
• American Heart Association.
• American Psychiatric Association.
• American Chiropractic Association.
• American Academy of Allergy & Immunology.
• Chronic Fatigue Syndrome Activation Network.
• Commission on Chronic Illness.
• National Kidney Foundation.
• Society of Toxicology.
• Federation of American Societies for Experimental Biology.
• Joint Committee on Health Problems in Education.
• Child Study Association of America.
• National Institute of Municipal Law Officers.