STP Maintenance & Services: A Practical Guide to Sewage Treatment Plant Care BT Water TreatmentSeptember 19, 2026 Sewage Water Treatment Plant A sewage treatment plant does a simple but important job: it treats the wastewater produced by a building or facility before the water is discharged or reused. However, installing an STP is only the first step. STP maintenance is equally important to keep the plant operating properly, maintain treatment performance, and prevent avoidable equipment problems over time. Pumps run every