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Table 1 Treatment technology classes of the drinking water production locations

From: Clustering and prioritization to design a risk-based monitoring program in groundwater sources for drinking water

Treatment class

Rapid sand filtration/marble filtration

Active carbon filtration

Nanofiltration or reversed osmosis

# production locations

Simple

x

–

–

81

Sorption

x

x

–

4

Size exclusion

x

–

x

10

Sorption combined with size exclusion

x

x

x

3