Section 11
Specifications
20413013
8-2012/Rev 10
11-5
Water Quality Standards
The quality of the inlet cutting water supply is one of the most important factors affecting
component life and performance. Water treatment requirements can be determined by a water
analysis.
The cutting water supply must meet the following standards. A high concentration of dissolved
solids, especially calcium, silica and chlorides will affect high pressure component life.
Table 11-3
Water Quality Standards
Constituent
(mg/l or ppm)
Minimum
Requirement Better Best
Alkalinity 50 25 10
Calcium 25 5 0.5
Chloride 100 15 1
Free Chlorine 1 1 0.05
Iron 0.2 0.1 0.01
Magnesium as Mg 0.5 0.1 0.1
Manganese as Mn 0.1 0.1 0.1
Nitrate 25 25 10
Silica 15 10 1
Sodium 50 10 1
Sulfate 25 25 1
TDS* 200 100 35**
Total Hardness 25 10 1
pH 6.5-8.5 6.5-8.5 6.5-8.5
Turbidity (NTU) 5 5 1
* Note: Total dissolved solids
**Note: Do not reduce the TDS beyond this amount or the water will be too aggressive.
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