No more trihalomethane (THM) found in the blood stream after shower. Replace filter media annually.
What is THM?
THMs can sometimes get into the bloodstream via a shower at levels four times greater than THM levels in tap water. High THM concentration have been linked to cancer, miscarriages and other reproductive problems after long-term exposure.
THM concentrations in blood were measured before and after showers. Researchers found that after subjects took showers, the THM levels in their bloodstreams were actually four times higher than the THM levels of the water coming out of their taps.
THM is a byproduct of chlorination and is associated with a multitude of health risks, including cancer.