The City of Paso Robles, California, used an online trihalomethane (THM) analyzer capable of low-level real-time detection of DBCM and BDCM to help characterize and monitor THMs in its treated wastewater for groundwater recharge use. The high frequency of reliable and accurate THM data provided by the THM-100™ proved essential to the City’s DBP strategy to maintain regulatory compliance with NPDES permit levels.

To comply with the Stage 2 Disinfectants and Disinfection Byproducts Rule (DBPR), the Benicia Water Treatment Plant (WTP) has implemented best management practices and increased the frequency of trihalomethane (THM) monitoring. The Benicia WTP installed an online THM analyzer, THM-100™, from AMS to enhance THM management. The integration of the online THM analyzer has been crucial in managing THM levels, preventing regulatory breaches, and delivering safe drinking water to the City of Benicia.

The City of Paso Robles, California, used an online water quality instrument to characterize and monitor low levels of bromodichloromethane (BDCM) and dibromochloromethane (DBCM) in its treated wastewater for groundwater recharge (GWR) use. The high frequency of reliable and accurate trihalomethane (THM) data provided by the online THM instrument proved essential to the City’s disinfection by-product (DBP) strategy to obtain regulatory compliance with NPDES permit levels.

Aigües de Barcelona has systematically addressed the complexities of managing DBPs in its extensive distribution network by adopting AMS’ DaaS technology to monitor its water quality, provide process control and ensure regulatory compliance analysis. The introduction of THM-100™, an online trihalomethane (THM) and THM Formation Potential (THM-FP) analyzer with > 98.5% data availability and uptime, and subsequent process optimizations have led to significant achievements. THM levels at the treatment plants saw an 86% decrease, with a parallel 53% reduction throughout the distribution network. These improvements have also translated into a substantial economic benefit, saving the utility an estimated 30,000€ monthly in operational costs, minimizing energy costs and reducing carbon emissions.

To help manage disinfection by-products (DBPs), the City of Santa Cruz Water Department (SCWD) used an online trihalomethane (THM) analyzer to obtain real-time and reliable data on THM and THM Formation Potential (THM-FP) levels within the Graham Hill Water Treatment Plant and distribution network. The THM-100 online THM analyzer aided the SCWD in daily operations and management of feasibility studies to reduce distribution system THM levels.

For over a decade, the Brunswick & Topsham Water District (BTWD) in Maine has used the AMS THM-100™ online THM analyzer to help manage trihalomethane (THM) concerns. Over the years, the online THM analyzer has been proven a valuable tool for the utility, enabling it to understand its treatment processes better and optimize operations. In this episode of AMS Talks, Craig Douglas, P.E., General Manager at BTWD, discusses the district’s unconventional THM management journey and how the real-time data from the THM-100™ analyzer opened the utility staff’s eyes to the impact of the operational decisions they were making.

The online THM-100™ monitor provides utilities with continuous high-frequency trihalomethane (THM) and THM formation potential (THM-FP) data in real-time. With the help of the THM-100™, utilities can design cost-effective THM treatment systems, optimize their water or wastewater treatment process and reduce related expenses while ensuring compliance with regulatory standards for THMs.

The Athens Water Supply & Sewerage Company S.A. (EYDAP) installed the online THM-100™ analyzer to the drinking water reservoir outlet of the Galatsi Water Treatment Plant for a three-month evaluation period, providing EYDAP with continuous online analysis of trihalomethane (THM) values. The real-time THM data helped EYDAP understand how changes in raw source water quality and chlorine contact time affect the total THM (TTHM) concentration and THM speciation composition. With the help of the reliable data provided by the THM-100, EYDAP was able to mitigate better the presence of harmful THMs across the service area.

The Bilbao Bizkaia Advanced Water Treatment Centre (CATABB) in Etxebarri, Bizkaia, Spain, is an open platform for innovation and research in water treatment that was designed and built by the Bilbao Bizkaia Water Consortium (BBWC) in 2018. To aid CATABB in a study to better understand the adsorption and desorption process of their GAC filters, an online trihalomethane (THM) analyzer, THM-100™, was installed at the facility to deliver accurate and reliable data on THM levels quickly. According to BBWC, thanks to the online THM analyzer, staff in the CATABB facility has been able to detect variations in the THMs concentration quickly and have greater control of the water quality. In addition, the online THM analyzer has become a very useful tool for current and future research in the study of the generation of disinfection by-products, and it will enable the opening of new lines of research and collaboration at CATABB.

The Pima County Regional Wastewater Reclamation Department in Arizona uses the THM-100™ online trihalomethane (THM) analyzer to continuously, accurately, and reliably monitor THM values in real-time at its Tres Rios Water Reclamation Facility.