PART 8Water treatment
Water treatment to minimise contamination from pipes29
1
Paragraph (2) applies where there is a risk (“the prescribed risk”) that water supplied by a relevant supplier would, for the reason mentioned in paragraph (3), after leaving the relevant supplier’s pipes—
a
contain a concentration of copper in excess of 2mg/litre, or
b
contain a concentration of lead in excess of 10µg/litre.
2
Every water undertaker or combined licensee which introduces water into the supply system used by the relevant supplier must, subject to paragraph (4), treat the water in such a way as will, in its opinion, eliminate the prescribed risk or reduce it to a minimum.
3
The reason referred to in paragraph (1) is the presence in the water of a concentration of copper or lead which is attributable to the fact that copper or lead is the major component of such a pipe as is mentioned in section 68(3) of the Act21, or its associated fittings.
4
Paragraph (1) does not require a water undertaker or combined licensee to treat water if—
a
the treatment is unlikely to achieve a significant reduction in the concentration of copper or lead, or
b
treatment is not reasonably practicable.