Upstream pollution control by water utilities in Sweden: incentives and challenges

Abstract

Wastewater treatment plants (WWTPs) are not designed to handle many harmful substances that are present in wastewater. The substances can also be transferred to the sewage sludge, which can make it unsuitable as a fertiliser. To alleviate these problems, Sweden has a practice called upstream work (uppströmsarbete) that aims to prevent harmful substances from entering the wastewater via efforts to control the pollution closer to the source. Upstream work has produced positive results in terms of reduced pollution in water and sludge and is seen as an important practice by both practicians and policymakers. In this paper, we investigate the incentives and challenges for upstream work as experienced by practitioners at municipal water utilities. The results show that there are two types of incentives: one related to practical problems and the other related to a perceived responsibility for the wastewater system and for the environment. The challenges were primarily related to an insufficient organisational structure for upstream work, manifested in unclear responsibilities, lack of prioritisation, and insufficient resources. The findings can be used to expand and initiate pollution control upstream of the WWTP as part of the urban water management, as well as decision support for policymakers. HIGHLIGHTS This study advances the understanding of incentives and challenges to controlling pollution before it enters the water cycle.; Increasing sewage sludge quality and protecting the environment are two incentives for upstream pollution control in Swedish water utilities.; Insufficient resources hinder the development of upstream pollution control in Sweden.; The results are important for urban water management and policy making.;

Keywords

• barriers
• drivers
• pollution prevention
• sewage sludge
• source control
• wastewater