2023 Online Catalog - Flipbook - Page 492
17 EPA Primary (Health-Related) Microbial & Turbidity Contaminants
National Primary
Drinking Water Regulations
Contaminants
MCLG+
Turbidity
MCL+
Treatment Methods
0.5 to 1 NTU in 95%
of samples; maximum
of 5 NTU under
certain circumstances
Coagulation/Filtration
Submicron Filtration
Sediment Reduction
Ultrafiltration
Reverse Osmosis
Distillation
Cartridge Filtration matched to turbidity
particle size
Coliform bacteria
zero
zero in 95%
of samples
Turbidity or sediment reduction to 1 NTU, then:
Disinfection
Chlorination
Ozone
Iodine (Polyiodide Resins)
Ultraviolet Radiation
Distillation
Submicron (absolute) Filtration (
