Trihalomethanes are compounds formed from organic compounds in the water complexing with halogens such as; chlorine, bromine or fluorine. Federal regulations are placing increasingly stringent controls for THM levels on a continuing basis for all water supplies, addressing once again the safety and health issues of our country’s drinking water systems.

Many water supplies are using alternative disinfectants to replace chlorine, in an effort to reduce THM levels. The foremost of these alternatives is the increased use of chloramines. The concern with chloramines usage is that the corresponding nitrogen content is also increased in the water supply, which is a primary factor for an increase in the biological growth throughout the system, thereby potentially adding to the biofilm problem.

Research and development work regarding THM production, has shown beneficial results through the use of biodispersants, as highlighted below;

  • Reduction in level of free chlorine used within the system.
  • More efficient use of chloramines
  • Moving your system closer to compliance with the new Federal Guidelines for THM levels

Hence, the potential benefits of reduced THM levels within a supply system are best illustrated in the graph.

The treatment of distribution systems for biofilm removal with BIO-PURGE can be accomplished in several ways. An entire community can be treated or a portion of a system can be isolated and treated if proper valving or flushing can be arranged within the system.