|Statutory Instruments 1999 No. 1148|
The Water Supply (Water Fittings) Regulations 1999 - continued
Every water fitting shall-
(b) be constructed of materials of such strength and thickness as to resist damage from any external load, vibration, stress or settlement, pressure surges, or temperature fluctuation to which it is likely to be subjected.
Every water fitting shall-
(b) be so constructed and installed as to-
(ii) inhibit damage by freezing or any other cause;
(c) be so installed as to minimise the risk of permeation by, or deterioration from contact with, any substance which may cause contamination; and
Every water fitting shall be capable of withstanding an internal water pressure not less than 1½ times the maximum pressure to which that fitting is designed to be subjected in operation.
(b) passes through or under any wall, footing or foundation;
(c) is enclosed in any chase or duct; or
(d) is in any other position which is inaccessible or renders access difficult.
No water fitting shall be installed in such a position, or pass through such surroundings, that it is likely to cause contamination or damage to the material of the fitting or the contamination of water supplied by the water undertaker.
(ii) the pressure in the system is maintained for one hour; and
(iii) there is no visible leakage throughout the test;
(b) in any other case, where either of the following tests is satisfied-
Every water system shall be tested, flushed and where necessary disinfected before it is first used.
14. - (1) Any water fitting conveying-
(b) any fluid that is not wholesome water;
shall be clearly identified so as to be easily distinguished from any supply pipe or distributing pipe.
15. - (1) Subject to the following provisions of this paragraph, every water system shall contain an adequate device or devices for preventing backflow of fluid from any appliance, fitting or process from occurring.
(2) Paragraph (1) does not apply to-
(b) a vented water storage vessel supplied from a storage cistern,
where the temperature of the water in the supply pipe or the cistern does not exceed 25°C.
(b) where the water undertaker has given notice for the purposes of this Schedule that such prevention is needed for the whole or part of any premises.
(5) A backflow prevention device is adequate for the purposes of paragraph (1) if it is in accordance with a specification approved by the regulator for the purposes of this Schedule.
16. - (1) Every pipe supplying water connected to a storage cistern shall be fitted with an effective adjustable valve capable of shutting off the inflow of water at a suitable level below the overflowing level of the cistern.
(2) Every inlet to a storage cistern, combined feed and expansion cistern, WC flushing cistern or urinal flushing cistern shall be fitted with a servicing value on the inlet pipe adjacent to the cistern.
(3) Every storage cistern, except one supplying water to the primary circuit of a heating system, shall be fitted with a servicing valve on the outlet pipe.
(4) Every storage cistern shall be fitted with-
(b) a cover positioned so as to exclude light and insects; and
(c) thermal insulation to minimize freezing or undue warming.
(5) Every storage cistern shall be so installed as to minimize the risk of contamination of stored water. The cistern shall be of an appropriate size, and the pipe connections to the cistern shall be so positioned, as to allow free circulation and to prevent areas of stagnant water from developing.
17. - (1) Every unvented water heater, not being an instantaneous water heater with a capacity not greater than 15 litres, and every secondary coil contained in a primary system shall-
(b) be capable of accommodating expansion within the secondary hot water system.
(2) An expansion valve shall be fitted with provision to ensure that water is discharged in a correct manner in the event of a malfunction of the expansion vessel or system.
(b) only discharge water when subjected to a water pressure of not less than 0.5 bar (50 kPa) above the pressure to which the hot water vessel is, or is likely to be, subjected in normal operation.
- (1) A temperature relief valve or combined temperature and pressure relief valve shall be provided on every unvented hot water storage vessel with a capacity greater than 15 litres.
(b) only discharge water at below its operating temperature when subjected to a pressure of not less than 0.5 bar (50 kPa) in excess of the greater of the following-
(ii) the operating pressure of the expansion valve.
(3) In this paragraph "unvented hot water storage vessel" means a hot water storage vessel that does not have a vent pipe to the atmosphere.
25. - (1) Subject to the following provisions of this paragraph-
(b) no pressure flushing valve shall be installed-
(ii) in any building not being a house where a minimum flow rate of 1.2 litres per second cannot be achieved at the appliance;
(c) where a pressure flushing valve is connected to a supply pipe or distributing pipe, the flushing arrangement shall incorporate a backflow prevention device consisting of a permanently vented pipe interrupter located not less than 300mm above the spillover level of the WC pan or urinal;
(ii) shall have instructions, clearly and permanently marked on the cistern or displayed nearby, for operating it to obtain the different volumes of flush;
(h) every flushing cistern, not being a pressure flushing cistern or a urinal cistern, shall be fitted with a warning pipe or with a no less effective device;
(ii) in all cases, is designed or adapted to supply no more water than is necessary for effective flow over the internal surface of the urinal and for replacement of the fluid in the trap; and
(j) except in the case of a urinal which is flushed manually, or which is flushed automatically by electronic means after use, every pipe which supplies water to a flushing cistern or trough used for flushing a urinal shall be fitted with an isolating valve controlled by a time switch and a lockable isolating valve, or with some other equally effective automatic device for regulating the periods during which the cistern may fill.
(2) Every water closet, and every flushing device designed for use with a water closet, shall comply with a specification approved by the regulator for the purposes of this Schedule.
(ii) 7.5 litres per hour per urinal bowl or stall, or, as the case may be, for each 700mm width of urinal slab, for a cistern serving two or more urinals;
(b) in the case of a manually or automatically operated pressure flushing valve used for flushing urinals which delivers not more than 1.5 litres per bowl or position each time the device is operated.
(5) Until 1st January 2001 paragraphs (1)(a) and (d) shall have effect as if they provided as follows-
(d) no flushing device installed for use with a WC pan shall give a single flush exceeding 7.5 litres;".
(6) Notwithstanding sub-paragraph (1)(d) a flushing cistern installed before 1st July 1999 may be replaced by a cistern which delivers a similar volume and which may be either single flush or dual flush; but a single flush cistern may not be so replaced by a dual flush cistern.
26. All premises supplied with water for domestic purposes shall have at least one tap conveniently situated for the drawing of drinking water.
27. A drinking water tap shall be supplied with water from-
(b) a pump delivery pipe drawing water from a supply pipe; or
(c) a distributing pipe drawing water exclusively from a storage cistern supplying wholesome water.
- (1) Subject to paragraph (2), every bath, wash basin, sink or similar appliance shall be provided with a watertight and readily accessible plug or other device capable of closing the waste outlet.
(b) a washing trough or wash basin whose waste outlet is incapable of accepting a plug and to which water is delivered at a rate not exceeding 0.06 litres per second exclusively from a fitting designed or adapted for that purpose;
(c) a wash basin or washing trough fitted with self-closing taps;
(d) a shower bath or shower tray;
(e) a drinking water fountain or similar facility; or
(f) an appliance which is used in medical, dental or veterinary premises and is designed or adapted for use with an unplugged outlet.
- (1) Subject to paragraph (2), clothes washing machines, clothes washer-driers and dishwashers shall be economical in the use of water.
(b) for domestic washer-driers, 48 litres per kilogram of washload for a standard 60°C cotton cycle;
(c) for domestic dishwashers, 4.5 litres per place setting.
Every pipe which conveys water to a drinking vessel for animals or poultry shall be fitted with-
(ii) prevents contamination of the water supply; and
(b) a stopvalve or servicing valve as appropriate.
Every pond, fountain or pool shall have an impervious lining or membrane to prevent the leakage or seepage of water.
(This note is not part of the Regulations)
These Regulations make provision for preventing contamination and waste of water supplied by a water undertaker. They do not apply to certain water fittings in connection with water supplied for non-domestic purposes, or to water fittings lawfully installed before 1st July 1999: regulation 2.
Part II of the Regulations deals with the principal requirements.
Regulations 3 and 4 impose general requirements in relation to water fittings. Water fittings must not be installed, connected, arranged or used in such a manner that they are likely to cause waste, misuse, undue consumption or contamination, or erroneous measurement, of the water supplied. They must be of an appropriate quality or standard, and be suitable for the circumstances in which they are used; and they must be installed, connected or disconnected in a workmanlike manner.
Regulation 5 requires a person who proposes to instal certain water fittings to notify the undertaker, and not to commence installation without the undertaker's consent. The undertaker may withhold consent or grant it on certain conditions. This requirement does not apply to some fittings which are installed by a contractor who is approved by the undertaker or certified by an organization specified by the regulator. Where an approved contractor instals, alters, connects or disconnects a water fitting, he must provide a certificate stating whether it complies with the Regulations: regulation 6.
Part III of the Regulations deals with enforcement etc.
Regulation 7 provides a fine not exceeding level 3 on the standard scale for contravening the Regulations. It is a defence to show that the work on a water fitting was done by or under the direction of an approved contractor, and that the contractor certified that it complied with the Regulations. This defence is extended to the offences of contaminating, wasting and misusing water under section 73 of the Water Industry Act 1991: regulation 8.
Regulation 9 enables water undertakers and local authorities who enter premises to carry out inspections, measurements and tests for the purposes of the Regulations.
Regulation 10 requires the water undertaker to enforce the requirements of the Regulations; this duty is enforceable by the regulator or the Director General of Water Services.
Regulation 11 enables the regulator to relax the requirements of these Regulations on the application of the water undertaker.
Regulation 12 requires the regulator to consult water undertakers and organisations representing water users before giving an approval for the purpose of the Regulations, and to publicize approvals.
Regulation 13 provides for disputes arising under the Regulations between a water undertaker and a person who has installed or proposes to instal a water fitting to be referred to arbitration.
Regulation 14 revokes the existing water byelaws made by water undertakers under section 17 of the Water Act 1945.
ISBN 0 11 082552 7
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