By the Ministry of Environment and Forestry, Water Pollution Control Regulation was published in 2004 in order to protect and use the groundwater and surface water resources in our country. This regulation sets out the principles for preventing pollution of water resources and realizing this in line with sustainable development objectives. With this legal regulation, the quality classifications of water environments, the purposes of use, the principles of planning for the protection of water quality and the prohibitions introduced, the principles of discharge of wastewater, the regulations related to wastewater infrastructure facilities, and the criteria and conditions for the controls and controls to prevent water pollution are explained.

In order to prevent water pollution and prevent pollution, all sources of pollutants causing water pollution are connected to a permit. The amount of domestic wastewater should be equal to the amount of clean water entering the house. Official bodies classify surface waters, groundwater and sea water for various purposes and also identify areas with the highest water pollution within the framework of water quality criteria. In this regard, it ensures the correct use of water resources and takes necessary measures in this direction. The enterprises should produce with the technology that will prevent pollution at the source by minimizing the amount of wastewater and the concentration of waste. All these efforts are aimed at preventing pollution of water resources and ensuring that people use clean water. Waste water cannot be given to the receiving environment without treatment. It is prohibited to exceed the limits set in the quality standards specified for the environment in which the wastewater will be delivered.

Again, the Ministry of Environment and Forestry published the Urban Wastewater Treatment Regulation in 2006. This regulation regulates the principles for the collection, treatment and discharge of wastewater in cities and the principles for the negative effects of wastewater released to the environment by certain industrial organizations.

Other legal regulations have been enacted to protect water resources, to ensure that waste water is not irresponsible to the environment and to protect the natural environment. For example,

• Regulation on Control of Pollution Caused by Hazardous Substances in Water and Environment
• Regulation on Surface Water Quality Management
• Regulation on the Monitoring of Surface Waters and Groundwater
• Regulation on the Protection of Groundwater Against Pollution and Degradation
• Implementing Regulation on the Quality of Surface Water Obtained or Planned to be Drinking Water
• Communiqué on Sampling and Analysis Methods for Water Pollution Control Regulation
• Regulation on Control of Water Pollution Communiqué on Dangerous and Hazardous Substances in Water
• Implementing Regulation on Urban Wastewater Treatment

Drinking water analysis in authorized laboratories is carried out in accordance with all legal regulations and standards taken by domestic and foreign institutions. The main standards considered in drinking water analysis are:

• TS EN 13052-1 The effect of substances on drinking water - Organic substances - Determination of color and turbidity of water in pipelines - Part 1: Test method
• TS ISO 5667-5 Water quality - Sampling - Part 5 - Sampling guide for drinking water in treatment plants and pipeline distribution systems
• TS ISO 5667-6 ... Guide for sampling from rivers and streams
• TS ISO 5667-10 ... Wastewater sampling guide
• TS ISO 5667-11 ... Groundwater sampling guide
• TS EN 1717 General features of water pollution prevention devices and prevention of water pollution caused by backflow in drinking water installations
• TS EN 15975-1 Drinking water supply safety - Risk and crisis management guidelines - Part 1: Crisis management
• TS EN 15975-2 ... Risk management

Authorized laboratories use spectroscopic, chromotographic and similar analysis methods as well as gravimetric and volumetric classical methods during these tests.