Water Purifying Tube Settlers are suitable for surface waters with high and variable contaminant loadings. These Tube Settlers can effectively treat cold water with high levels of turbidity, iron and manganese. These Tube Settlers are capable of purifying the most difficult types of raw water and produce clear, safe drinking water from low quality sources. Water Purifying Tube Settlers are designed with a capacity range of 700 GPM [3,800 m³/d] per module.