Waste management in Saudi Arabia has gained importance over the past five years. According to the state's National Waste Management Center (NWMC), only 18 percent of waste will go to landfill by 2035. Recycling, composting, incineration, and other processes are said to account for the majority of waste recovery. The circular economy is expected to contribute $32 billion to the gross domestic product by 2035, reduce carbon emissions by 72 million tons and create 77,000 jobs. The NWMC is planning over 1,300 disposal and recycling companies by 2035. 

The state-owned Saudi Investment Recycling Company (SIRC) finances the development of the recycling sector. SIRC is working on Waste-to-Energy (WtE) projects and plans to build WtE power plants by 2030. 

Saudi Arabia is keen to increase investment and private investor participation in the waste sector. This includes investments in modern waste treatment facilities, recycling infrastructure, and green technologies, to recycle waste from landfills and increase the proportion of recyclable materials. 

The country has limited reserves of non-renewable groundwater that are increasingly being depleted. The dry climatic conditions together with the high per capita water requirement (265l/day) and agricultural requirements (84%) make the water supply difficult. To cover the high water demand, Saudi Arabia increasingly uses seawater desalination plants. For example, the Saline Water Conversion Cooperation is building a new water desalination plant in Al-Khobar with an investment volume of USD 800 million by 2030. 

The production of freshwater through seawater desalination is energy- and cost-intensive. That is why the kingdom is focusing on the expansion of renewable energies for the operation of the systems. The country is also investing in water recycling technologies to use wastewater for agriculture and greening. The Ministry of Environment, Water and Agriculture (MEWA) estimates the need for investment in water infrastructure at USD 5 billion over the next 20 years. 

MEWA is pushing ahead with the construction of sewage treatment plants, such as the plant in Al Jouf Province. The construction costs 70 million USD and will be completed by 2025. The Saudi Water Partnerships Company (SWPC), responsible for tendering and awarding PPP (private-public partnerships) wastewater projects and entering into long-term water offtake agreements, is investing USD 820 million in the construction of a water pipeline in Ras Al Khair by 2026. The National Water Company, a PIF company, is building the $500 million Arana Wastewater Treatment Plant in Makkah Province by 2026. 

For example, a waste separation system was introduced, and modern waste dumps were set up. In addition, the country has launched programs to promote recycling and raise public awareness of environmental issues. Regarding water supply, Bahrain has also taken important measures. New desalination plants were built and the country made great efforts to improve water efficiency in agriculture. 

Like Saudi Arabia, Bahrain's waste sector is interesting for German manufacturers of WtE plants. According to the Bahrain Ministry of Labor, Urban Planning and Communities, more than 1.7 million tons of solid waste is generated each year that could not be landfilled but used to generate electricity and reduce greenhouse gas emissions. Organic matter, which is mainly food waste, accounts for 60% of all municipal waste. All municipal waste in Bahrain currently ends up at the Asker landfill, which has a total area of 3.1 meters and a depth of between 10 and 15 meters.