Water Supply (Water Quality) Regulations
Requirements for quality of drinking water supplied by water companies
Total Viable Count/Aerobic colony count
A count of all the viable micro-organisms in a water sample.
Coliforms are a family of bacteria of which E. coli is one species, associated with faecal contamination. Should be zero in drinking water
Taste & Odour
A panel of trained analysts will assess water samples for any taste or odour. A bacteriological sample must be tested prior to taste analysis.
pH (Hydrogen ion)
Measuring the level of acidity or alkalinity in a water sample
Gives an indication of the level of contamaination of a water sample due to presence of ions
A by-product of chlorination or ozonation of water
Total Viable Count at 22 & 37°C, Coliforms, E. coli, Enterococci, Cl. perfringens
Chloride, Fluoride, Nitrate, Sulphate, Nitrite, etc
Aluminium, Iron, Manganese, Copper, Nickel, Cadmium etc