Ukraine and Moldova agreed on 29 September 2026 to keep sharing monitoring data on the shared Dniester River basin and to push ahead with a slate of wastewater, sewerage and hydrology projects, after a March 2026 contamination event and a difficult low-water season focused fresh attention on the catchment (mezha.net). The agreements were reached at a working-group meeting in Chișinău hosted by the Ministry of Economy and Environment of Ukraine (mezha.net).
Key takeaways
- Ukraine completed an upgrade of the wastewater treatment facilities in the village of Davydiv, Lviv region, at a cost of UAH 26 million, with a capacity of 500 m³ per day (mezha.net).
- Reconstruction of wastewater treatment facilities and sewerage networks in Zalishchyky is more than 70% funded, with completion expected in November 2026 (mezha.net).
- From 2025 through the first half of 2026, two Dniester basin measures were completed, 19 are underway, and 105 were included in the relevant programs, with funding of about UAH 305 million for ongoing work (mezha.net).
- Ukraine presented the ReHydrUA initiative, which would install 60 automated sensors for continuous water-level measurement, currently in proposal selection before further funding (mezha.net).
- Ukraine and Moldova adopted a 2026–2027 work plan for the monitoring and information exchange group covering the Dniester basin (mezha.net).
What happened
The Chișinău meeting brought together Ukrainian and Moldovan working groups to review progress on the 2025–2030 national basin management plans for the Dniester (mezha.net). The Ukrainian delegation presented results of its 2025 chemical and ecological monitoring of surface waters, and the two sides reviewed a program that, since 2025, has logged two completed measures, 19 in progress and 105 included in the relevant programs, with around UAH 305 million earmarked for ongoing work (mezha.net).
Within the Dniester work package, three schemes are advancing. In Davydiv, Lviv region, the wastewater treatment facilities have been upgraded for UAH 26 million and now run at 500 m³ per day (mezha.net). In the Khmelnytskyi region, hydrological-restoration work on the Zbruch River has been completed at a cost of UAH 32 million (mezha.net). In Zalishchyky, reconstruction of wastewater treatment facilities and sewerage networks is under way, with a project value of about UAH 70 million and more than 70% of the funding secured, with completion targeted for November 2026 (mezha.net).
The talks also covered low-water conditions and the March 2026 contamination of the Dniester with hazardous substances, plus the response measures deployed afterwards (mezha.net). Ukraine set out its ReHydrUA initiative, which would deploy 60 automated sensors for continuous water-level measurement; the project is at the proposal-selection stage ahead of further funding (mezha.net). The two delegations agreed a 2026–2027 work plan for their joint monitoring and information exchange group, and committed to develop shared approaches for setting environmental flows and managing the basin (mezha.net).
"The low-water conditions we are seeing this year are another reminder of how important it is to develop shared approaches to water resource management, strengthen monitoring, and prepare solutions in advance for different hydrological scenarios. For the Dniester basin, which Ukraine and Moldova share, coordinating our actions and exchanging information regularly are especially important."
— Iryna Ovcharenko, Deputy Minister of Economy and Environment of Ukraine, reported by mezha.net
Specification read
Restating the reported Davydiv figure in the units a buyer will use on an enquiry: 500 m³ per day is 0.5 MLD, or roughly 2,500–3,500 population equivalent at the conventional 150–200 L per person per day loading used for domestic influent (the source reports the flow but not the influent load, so the population equivalent is an interpretation rather than a reported number) (mezha.net). At that scale, the typical treatment train runs through screening and grit removal, primary clarification, a biological stage such as A2O, MBR, MBBR or SBR, and a tertiary step with disinfection before discharge; a project framed as an "upgrade" of an existing plant usually targets the biological reactor and the sludge line, with a polishing stage added where effluent quality for a sensitive receiving water is the driver. The Davydiv scheme, together with the in-progress Zalishchyky reconstruction of wastewater treatment facilities and sewerage networks, points to biological-stage retrofit and tighter solids handling on small municipal catchments that drain toward the Dniester, which is now under heightened scrutiny after the March 2026 contamination (mezha.net). If your plant sits in the same 0.5 MLD class, draws a mixed domestic influent with BOD typically in the 150–300 mg/L range, and discharges into a transboundary catchment where low-flow conditions and contamination events have triggered new monitoring, this is the class of upgrade you should be benchmarking against, both on the treatment train and on the instrumentation layer that the ReHydrUA sensor programme is intended to build out (mezha.net). Buyers comparing biological options for a small catchment like this can review the trade-offs in our COD Removal Methods Comparison 2026: Which Industrial Process Wins? analysis, and weigh a membrane retrofit against conventional activated sludge using our MBR vs Conventional Activated Sludge for Chemicals Wastewater side-by-side. Procurement leads sourcing equipment for a 0.5 MLD municipal plant in this catchment can start their shortlist on our Chemical hub.
FAQ
What scale of plant is being upgraded in the Dniester basin?
The reported upgrade is the Davydiv wastewater treatment facilities at 500 m³ per day, or 0.5 MLD, with a reported cost of UAH 26 million; the Zalishchyky reconstruction is sized as a wastewater and sewerage scheme valued at about UAH 70 million, but its flow is not given in the source (mezha.net).
What is the expected delivery timeline?
The source reports the Zalishchyky wastewater and sewerage reconstruction is more than 70% funded and is expected to be completed in November 2026; no completion date is given for other items (mezha.net).
What is the procurement signal for suppliers?
Work in the basin is framed as upgrade and reconstruction of wastewater treatment facilities and sewerage networks, and Ukraine is running a parallel proposal selection for the ReHydrUA sensor programme of 60 automated water-level stations; the source does not report contract award dates, lead times or supplier names (mezha.net).
How is the basin being monitored going forward?
Ukraine and Moldova adopted a 2026–2027 work plan for the joint monitoring and information exchange group, and Ukraine presented ReHydrUA, a 60-sensor automated water-level network that is currently in proposal selection ahead of further funding (mezha.net).
