Regulation 4 Wholesomeness
United Kingdom
(1)
A private supply of water is to be regarded as wholesome if the following conditions are met—
(a)
it does not contain any micro-organism, parasite or substance, alone or in conjunction with any other substance, at a concentration or value that would constitute a potential danger to human health,
(b)
it complies with the concentrations or values prescribed in Part 1 of Schedule 1 for each parameter, and
(c)
the water satisfies the formula “[nitrate]/50 + [nitrite]/3 ≤ 1”, where the square brackets signify the concentrations in mg/1 for nitrate (NO3) and nitrite (NO2).