Together with partners SLLC “Latvian Environment, Geology and Meteorology Centre”, the association “Baltijas krasti”, LLC INNOMATRIX”, LLC “EKOLAT” un LLC ”I.A.R” a study on decentralized sewage loads and possible management solutions was carried out within the framework of the LIFE GOODWATER project (LIFE18 IPE / LV / 000014).
Customer of the research: Engure Municipality Council
Purpose of the research: To assess the potential impact of decentralized wastewater management systems on the water body at risk – the Gulf of Riga.
Period of implementation of the research: 12.08.2020–21.12.2020
The following works were carried out within the framework of the research work:
- Study of the division of groundwater level and development of groundwater flow model
- Development of records-register of decentralized wastewater management systems
- Recording of the flow of residents and tourists
- Development of groundwater quality monitoring system
- Groundwater quality monitoring
As a result of the aforementioned works, it was concluded that naturally poor-quality water with signs of anthropogenic contamination was spread in the groundwater horizon of Engure Village.
According to the water quality thresholds of the regulatory enactments, the water is not to be classified as contaminated.
Considering the direction of groundwater flow and the calculated average groundwater flow rate – 0.04 m/day or 14.6 m annually, the potential self-treatment processes in the groundwater horizon, as well as locations of building territories with individual wastewater management solutions, the release of contamination from individual wastewater management facilities in the Gulf of Riga or River Engure in the case of a leak is not likely.