Nortec ME Direct Feed Installation - Manual (Page 44)

44 Appendix
Parameter Content in supply water Concern
Total organic carbon - No specific concerns
Turbidity < 5 NTU No specific concerns
Colony count 22°C < 1000 cfu/ml Indicator of contaminated water supply
Coliform bacteria < 10 cfu/100 ml Indicator of poor water quality
Legionella bacteria < 50 cfu/1000 ml Risk of Legionella
Pseudomonas species < 10 cfu/100 ml Indicator of slime forming potential
Controlled Substances
DANGER!
Many of the following controlled substances are toxic; for example vinyl chloride is highly toxic, flam-
mable and carcinogenic and could be evaporated off the matrix and passed to the airflow. Therefore it
is important to note that any supply water coming from complex waste water, which may contain these
contaminates should therefore be carefully risk assessed by a water treatment specialist.
Controlled substances
Clostridium perfringens (including spores)
Acrylamide
Antimony
Arsenic
Benzene
Benzo(a)pyrene
Boron
Bromate
Cadium
Chromium
Cyanide
1,2-dichloroethane
Epichlorohydrin
Fluoride
Lead
Mercury
Nickel
Pesticides
Polycyclic aromatic hydrocarbons
Selenium
Tetrachloroethene and Trichloroethene
Trihalomethanes
Vinyl chloride
Water Monitoring
The Nortec ME water system must be monitored for hygiene as part of the maintenance programme.