9.5 Water Treatment Guidelines:
Testing your inlet cutting water with a TDS meter allows you to quickly and effectively monitor the
quality of your inlet water and make adjustment accordingly.
High Quality Water
TDS < 50 ppm
No treatment
required
No action
Good Quality Water
50 ppm < TDS < 150 ppm Soften only
Contact local water treatment
specialist
Medium Quality
Water
150 ppm < TDS < 250 ppm
Soften or TDS
removal
Specialist or RO system
Poor Quality Water
TDS > 250 ppm
Silica > 15 ppm
TDS removal
RO System available through
Hypertherm
Do not treat to 5 ppm or less: Water of this high of purity is overly aggressive and
will damage stainless steel components.
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