Oil Pollution Continues to Enter the Dniester

The Republic of Moldova continues efforts to mitigate the consequences of oil pollution in the Dniester River which, according to the Moldovan side, is still entering from the territory of Ukraine. Chisinau has asked Romania for technical support, including additional filtration equipment and specialized means to help contain the spill and prevent its further spread.

According to Moldovan authorities as of 12 March 2026, the most difficult situation has been recorded in the Naslavcea area, where the latest water samples indicated a deterioration to Class 5 water quality, meaning a high level of risk for public safety. In this connection, local authorities were advised to suspend water supply and prohibit the use of river water for household needs.

At the same time, in the districts of Soroca, Florești, Sîngerei and in the municipality of Bălți, water quality has been classified as Class 3, indicating a medium level of pollution. In these areas, the use of water is allowed only under strict restrictions: direct consumption of water from the Dniester is prohibited, as is its use for watering animals, fishing, or irrigation.

In a number of downstream districts, including Șoldănești, Rezina, Orhei, Criuleni, Dubăsari, the municipality of Chișinău, Anenii Noi, Căușeni and Ștefan Vodă, water quality currently remains within normal parameters, and no additional restrictions have been introduced.

Moldova’s Ministry of Environment has stated that the situation remains under control and that water supply has already been restored in several northern localities after additional checks. The authorities also stressed that there is currently no direct threat to Chișinău’s water intake system, as the polluted flow remains at a considerable distance from the capital.

At the same time, Moldovan officials warn that the oil flow from Ukraine continues to enter the river, and there is a risk that the containment and removal measures introduced in recent days may not be sufficient to stop the full volume of pollutants in the short term. Specialists note that in such incidents the density of pollutants changes constantly depending on the current, depth and hydrological conditions, which means the situation may vary from hour to hour.

Preliminary Moldovan assessments also link the incident to the consequences of a missile strike on Ukraine’s energy infrastructure on 7 March, after which, according to the Moldovan side, a leakage of technical oil may have occurred in the area of the Dniester Hydropower Plant.

IDR Comment

The situation on the Dniester demonstrates that even a localized technogenic incident in the upper reaches of a transboundary river can rapidly evolve into an international environmental and humanitarian challenge. In practical terms, the issue concerns not only water quality, but also the resilience of public water supply systems, public trust in official communication, and the ability of neighbouring states to respond in a coordinated manner.

For Ukraine, Moldova and Romania, this case is a strong argument in favour of deeper joint monitoring of transboundary waters, the establishment of emergency data-sharing protocols, and the development of a reserve of technical equipment for rapid response to pollution incidents.

From the standpoint of the Institute for Danube Research, the further development of the situation requires three parallel steps: continuous laboratory monitoring of water quality in real time, maximum transparency in interstate communication, and the institutionalization of a joint Ukrainian-Moldovan-Romanian response mechanism for environmental incidents in transboundary river basins.