Source of SOC's
Over 1000 SOC's (Synthetic Organic Chemicals) have been detected in drinking water at one time or another. Most are of no concern, but some are potentially a health risk to consumers. Below is a list of synthetic organic chemicals along with the proposed MCL (maximum contamination level) in mg/i as determined by the US EPA Primary Drinking Water Regulations.
Synthetic Organic Chemicals (Proposed MCL, mg/l)
Aldicarb sulfoxide (0.01)
Aldicarb sulfone (0.04)
Heptachlor epoxide (0.0002)
Polychlorinated biphenyls (0.0005)
Treatment of SOC's
Activated carbon is generally used to remove organics. Flow rates should be restricted to 2 gpm per square foot of the filter bed. Reverse osmosis will remove 98 to 99% of the organics in the water. Ultrafiltration (U7F) and nanofiltration (NF) both will remove organics. Anion exchange resin also retains organics, but periodically needs cleaning.
Products Related to SOC's Water Treatment