Key Takeaways Modeling water age is a simple approach, by means of a readily measurable parameter, to rapidly assess a water distribution system's (WDS's) general water quality. Used correctly, the US Environmental Protection Agency's EPANET program can model water age with accuracy, and the results can help in designing, improving, or operating a WDS. The newest edition of EPANET added mass balance calculations and has improved computational time, mass balance performance, and overall model stability.

Globally, Indigenous Peoples suffer disproportionately higher rates and complications of diabetes and obesity than non-Indigenous people. Western health interventions combined with culturally appropriate Traditional approaches can reduce incidence, prevalence, and related co-morbidities. This literature review reports effective culturally relevant Traditional and Western diabetes and obesity prevention and management intervention programs for Indigenous populations in Australia, Canada, New Zealand, and the United…

In summer 2019, a new task committee on Premise Plumbing Modeling (PPM) was approved under the auspices of the Water Distribution Systems Analysis Committee of ASCE EWRI. The primary purpose of the PPM task committee is to advance the science of the new field of premise plumbing modeling. In particular, the PPM committee intends to identify areas where methods and models developed over the past several decades to manage municipal water distribution systems can also be applied to solve vexing problems that arise in…

Abstract. EPANET is widely employed to simulate water quality in water distribution systems. However, in general, the time-driven simulation approach used to determine concentrations of water-quality constituents provides accurate results only for short water-quality time steps. Overly long time steps can yield errors in concentration estimates and can result in situations in which constituent mass is not conserved. The use of a time step that is sufficiently short to avoid these problems may not always be feasibl…

Abstract. The effect of limitations in the structural detail available in a network model on contamination warning system (CWS) design was examined in case studies using the original and skeletonized network models for two water distribution systems (WDSs). The skeletonized models were used as proxies for incomplete network models. CWS designs were developed by optimizing sensor placements for worst-case and mean-case contamination events. Designs developed using the skeletonized network models were transplanted i…