On 13 October 2026, the Stockholm Environment Institute reported that its technical support to Moldova's Ministry of Environment on a national regulatory package for agriculture — including reuse of treated wastewater for irrigation — had wrapped up, with government adoption planned by the end of 2026. Stockholm Environment Institute
Key takeaways
- SEI said the proposed regulatory package has completed preparation and public consultation and has been endorsed by key state agencies, with government adoption planned by the end of 2026. Stockholm Environment Institute
- The reuse study is centred on three pilot locations: Căușeni, Cantemir and Cahul. Stockholm Environment Institute
- Reuse design is anchored to rainfall, crop water needs and irrigation deficits, and will also cover storage, delivery, cost-benefit and public-health risk. Stockholm Environment Institute
- The work aligns with EU Regulation 2020/741 on agricultural water reuse, covering water quality, monitoring and risk management. Stockholm Environment Institute
- Adoption alone is not enough: treatment capacity, monitoring, financing and clear institutional responsibilities still have to be put in place. Stockholm Environment Institute
What happened
Regulatory package reaches consultation milestone
Moldova's Ministry of Environment, with technical support from SEI under the Sida-funded Green Agenda for Armenia, Moldova and Ukraine project, has completed preparation and public consultation of a proposed regulatory package for agriculture. Stockholm Environment Institute According to SEI, the package has been endorsed by key state agencies, SEI's technical support is complete, and government adoption is planned by the end of 2026. Stockholm Environment Institute
One element of the package is a regulation on water reuse, framed by Aurelia Donos, Chief of Integrated Water Resources Management Policy Division at the Ministry of Environment, as a way to ease pressure on small rivers and groundwater. "We need alternative water sources to address the impacts of climate change," Donos said, adding that "in recent years farmers have also placed increasing pressure on groundwater, which is a strategic resource for drinking water supply in the country." Stockholm Environment Institute
Three-site reuse study and farmer demand
Alongside the regulator, SEI's research arm is examining agricultural reuse of treated wastewater with the Ministry of Environment and the Ministry of Agriculture and Food Industry, focusing on Căușeni, Cantemir and Cahul. Stockholm Environment Institute Study principal investigator Arno Rosemarin said the team has built a scenario tool based on rainfall, crop water needs and irrigation deficits to design realistic reuse options and identify target crops. Stockholm Environment Institute
Viorel Gherciu, former Minister of Agriculture and the lead agriculture expert for SEI's study, said farmers were open to the idea once safety was guaranteed: "The farmers responded very positively, expressing their readiness to use this water for crop irrigation, provided it meets standard requirements and guarantees the safety of the produce." Stockholm Environment Institute The work is being aligned with EU Regulation 2020/741, which sets minimum requirements for water quality, monitoring and risk management in agricultural reuse. Stockholm Environment Institute
SEI cautioned that adoption of the national rules does not by itself create a working reuse system; treatment capacity, monitoring, financing and clear responsibilities still have to follow. Stockholm Environment Institute
Specification read
Reported scale in buyer units: SEI did not publish a flow figure in m³/day, a BOD/COD load, or a hectare coverage for the Căușeni, Cantemir and Cahul pilots, so the hydraulic and pollutant capacity of the eventual reuse scheme cannot be sized from the source — that input is still missing from public reporting and will need to come from the project documents once government adoption is complete.
Treatment train for a municipal effluent-to-irrigation project of this type typically runs screening → grit removal → primary clarification → biological treatment (MBR or conventional activated sludge with nutrient removal, since EU 2020/741 requires microbiological and, for food crops, nitrogen/phosphorus control) → tertiary filtration → disinfection (UV or chlorination) → storage buffer → distribution to the field, with sludge handling running in parallel. This event sits one step earlier in the chain: it is regulatory and planning work that will set the effluent quality bar (reuse class A/B/C under EU 2020/741), the monitoring regime and the risk-management plan that any future plant in Căușeni, Cantemir or Cahul will have to meet. The supply opportunity for equipment vendors is therefore downstream of adoption: once the package is enacted, municipal plants feeding these reuse schemes will need to verify or upgrade the biological and tertiary/disinfection stages against the new national rules, and new-build reuse lines will need to be specified against EU 2020/741.
For municipal plant managers already operating secondary treatment with chlorination, this is what it means in practice: the compliance pressure to add or tighten tertiary filtration and validated disinfection is likely to rise once Moldova adopts the package, and procurement of those stages becomes time-sensitive. Process know-how for tertiary polishing and sludge handling is covered in Best Technology to Remove COD BOD From Industrial Wastewater (2026 Buyer Guide), and the food-industry reuse angle ties into the Food sector hub.
FAQ
What did SEI deliver to Moldova's Ministry of Environment?
SEI provided technical support for a proposed agricultural regulatory package, including a water-reuse regulation, and has now completed that support. Government adoption of the package is planned by the end of 2026. Stockholm Environment Institute
Which sites are in scope for the wastewater-reuse study?
The study focuses on three locations: Căușeni, Cantemir and Cahul. SEI did not report a flow rate in m³/day or a hectare target. Stockholm Environment Institute
What quality standard is the package aligned with?
SEI says the work is being aligned with EU Regulation 2020/741, which sets minimum requirements for water quality, monitoring and risk management in agricultural water reuse. Stockholm Environment Institute
What still has to happen before treated wastewater is actually reused on Moldovan fields?
Beyond adoption of the national package, SEI flags that treatment capacity, monitoring, financing and clear institutional responsibilities still have to be built, so a working reuse system is not yet in place. Stockholm Environment Institute
