The July, 2019, edition of Treatment Plant Operator featured an article entitled “No Stone Unturned” which covered the Wisconsin Village of Slinger and their solution to meet a tightening phosphorus limit without a plant upgrade. The Wastewater Treatment Team have implemented several strategies and maintained regular documentation to ensure changes made continue to produce the needed results. Part of their process included replacing the original chemical feed pumps with Tacmina Smoothflow pumps and variable-frequency drives to deliver more finely tuned dosing. The pulsefree nature of the Smoothflow pumps helped deliver a consistent flow that blended earlier in the process, reducing the amount of chemical needed.