S.I. No. 75/1962 - Fluoridation of Water Supplies (Dublin) Regulations, 1962.

1. The piped water supply provided by the Corporation.

2. The Balbriggan-Skerries piped water supply.

3. The Kilternan-Ballaly piped water supply

4. The Barnacullia piped water supply.

5. The Rush piped water supply.

Article 6.

SECOND SCHEDULE.

(1) Specification for Sodium Fluoride.

The substance shall contain a minimum of 98 per cent. sodium fluoride (NaF) by weight, providing 44.3 per cent. available fluorine.

It shall not contain any toxic or harmful impurities when dissolved in water.

The content of insoluble material shall not exceed 0.5 per cent.

The moisture content shall not exceed 0.5 per cent.

The substance shall have a crystalline form (20-40 mesh particle size) and shall be free from dust.

(2) Specification for Sodium Silicofluoride.

The substance shall contain a minimum of 98 per cent. sodium silicofluoride (Na

2

SiF

6

) by weight, providing 59 per cent. available fluorine.

It shall not contain any toxic or harmful impurities when dissolved in water.

The content of insoluble material shall not exceed 0.5 per cent.

The moisture content shall not exceed 0.5 per cent.

The substance shall be in the form of a powder and shall conform to the following sieve tests :—

(

a

) 100 per cent. to pass through a 40 mesh sieve ;

(

b

) 95 per cent. to pass through a 100 mesh sieve ; and

(

c

) not less than 5 per cent. nor more than 35 per cent. to pass through a 325 mesh sieve.

GIVEN under the Official Seal of the Minister for Health this 15th day of May, One Thousand Nine Hundred and Sixty-Two.

SEÁN MAC ENTEE.

Minister for Health.

EXPLANATORY NOTE.

These regulations require the Dublin Health Authority to arrange for the fluoridation of the public water supplies specified in the First Schedule, in accordance with the conditions set out in Articles 5, 6, 7 and 8. Under Article 4, the Dublin Corporation and the Dublin County Council, acting as agents for the Dublin Health Authority, are required to perform certain acts in relation to the fluoridation of these water supplies.

6. Fluorine may be added to a public water supply in accordance with these Regulations either in the form of sodium fluoride complying with the specification for that substance in the Second Schedule to these Regulations, or in the form of sodium silicofluoride complying with the specification for that substance in the said Schedule, or in such other form as may be approved by the Minister.

7. Equipment used for fluoridation of public water supplies in accordance with these Regulations shall be such as may be specified or approved by the Minister for Local Government.

8. The fluorine content of each of the public water supplies mentioned in the First Schedule to these Regulations to which fluorine has been added shall be determined daily by a colorimetric method and, in addition, shall be determined by a distillation method at intervals not exceeding two weeks during the period of six months after the date on which fluorine shall have been first so added and thereafter at intervals not exceeding four weeks.

Article 3.

FIRST SCHEDULE.

Public Water Supplies.

S.I. No. 75 of 1962.

FLUORIDATION OF WATER SUPPLIES (DUBLIN) REGULATIONS, 1962.

In exercise of the powers conferred on him by

sections 2

and

4

of the

Health (Fluoridation of Water Supplies) Act, 1960

(No. 46 of 1960), the Minister for Health, having complied with the provisions of subsection (4) of section 2 and paragraph (

a

) of subsection (1) of section 4 of the said Act, hereby makes the following Regulations :—