For more than five years Scottish Water has relied on the reliability and accuracy of the online THM-100™ monitor to continuously monitor THM levels at a number of their facilities. The online THM monitors have allowed Scottish Water to consistently monitor, maintain, optimize and respond to any on-going THM concerns in a very timely fashion. The THM-100 proved especially valuable at the Tullich WTWs when the facility tested and implemented an aeration system to further minimize THM formation.