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Water Quality Parameters
UV disinfection is only effective if the UV light can pass through the water it needs to treat. This
means that the quality of your water is very important in order to ensure complete disinfection.
Treated water should be tested for at the least the parameters listed below. If the water exceeds
the listed parameters Atlas strongly recommends that appropriate pretreatment equipment be
installed (equipment required will depend on parameters being treated):
Hardness:
<7 gpg (120 mg/L) – if hardness level is 7 gpg or slightly below the
quartz sleeve must be cleaned periodically in order to ensure effi-
cient UV penetration; if above the water should be softened.
Iron (Fe):
<0.3 ppm (0.3 mg/L)
Manganese (Mn):
<0.05 ppm (0.05 mg/L)
Turbidity:
< 1 NTU
Tannins (organics):
<0.1 ppm (0.1 mg/L)
UVT (transmittance):
>85% (Please contact Atlas if water has a UVT that is less than 80%
for pre-treatment recommendations)
You can have your water tested at a private analytical laboratory or by your local dealer. It is
always recommended to install pre-filtration of at least 20 microns prior to an Atlas UV disinfec-
tion system.
Summary of Contents for H Series
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