From harmonised sampling to pilot design – an action-packed spring
From February to July 2026, the Balt-Plast-Free team enters a decisive new phase. During this second project period, both Finnish and Estonian partners move from preparation towards hands-on work: harmonising sampling methods, measuring microplastics at wastewater treatment plants, and designing concrete pilot solutions to reduce emissions into the Baltic Sea.
Harmonising how samples are collected and microplastics are measured
A key focus in the first half of 2026 is finalising harmonised protocols for microplastics sampling and analysis. Researchers from LUT University, KBFI and TalTech continue their joint work to ensure that measurements carried out in Finland and Estonia are comparable and reliable.
These harmonised methods form the foundation for all upcoming activities from baseline measurements to pilot design, and staff training. The work also supports wastewater treatment plants in preparing for future EU requirements related to microplastics monitoring.
Measuring microplastics at WWTPs in Finland and Estonia
Once the protocols are in place, sampling campaigns will be started and carried out at six wastewater treatment plants across Finland and Estonia. The aim is to establish baseline data on microplastics emissions from different treatment processes and streams.
The results will help identify where microplastics accumulate within treatment systems and where targeted technical solutions can have the greatest impact. Baseline concentration reports will be completed for the pilot sites in Mikkeli (Finland) and Elva (Estonia) by late spring.
Mobile lab and designing pilot solutions for microplastics removal
At the same time, technical planning moves forward. During this period, partners begin the engineering design of two pilot installations, focusing on different stages of the treatment process. Procurement and preparation for installation will follow later in the year.
Work also continues on the project’s mobile laboratory, which will be equipped during this period to support sampling, training and awareness-raising activities in Estonia and later in Finland. In parallel, partners develop digital training materials combining scientific know-how with practical guidance.
Sharing progress with stakeholders
Communication and outreach remain an ongoing task. During spring 2026, we will share progress through website updates, social media (follow us on LinkedIn!) and stakeholder information packages. The project will also be visible at key sector events, including international and national water conferences, starting with Microplastic Days 3.-5.2.2026 in Ljubljana, Slovenia.
As we move deeper into implementation, the coming months will lay the groundwork for piloting, training and concrete emission reduction measures.
