General information on the Laboratory Service

Water is indispensable to human existence as a source of life and cannot be replaced.

Supervision of the quality of the drinking water supplied to consumers and of the collected and discharged wastewater is carried out by means of laboratory tests by the Company’s Laboratory Sector, which is an integral part of the Department of Quality Assurance and Control.

The Laboratory Sector has the following areas of activity: sampling and physical, chemical, biological and bacteriological testing of samples of potable water, surface water, underground water, water from all stages of the technological process of treatment and purification, wastewater, sludge.

This operates on the basis of the four laboratories:

  1. Drinking water laboratory (DWL) – accreditation certificate no. L.I – 067, appendix no. 4;
  2. Nistru Station Laboratory (NSL) – accreditation certificate no. L.I – 067, appendix no.4;
  3. Wastewater laboratory (WWL) – accreditation certificate no. L.I. – 069, appendix no. 1;
  4. Wastewater Laboratory for Business Operators (WWLBO) – accreditation certificate no. L.I. – 038, appendix no.3.


The activity of the laboratories is meant to ensure the performance of physical, chemical and bacteriological laboratory tests on the treatment and purification flaws, the drinking water distribution networks and the sewage networks for which S.A. “Apa-Canal Chisinau “is the operator, as well as the performance of analysis at the request of external customers.

All laboratories within the Sector are accredited by the National Accreditation Body (MOLDAC) and have implemented the quality management system according to SM SR EN ISO / IEC 17025: 2006 ” General requirements for the competence of testing and calibration laboratories”. Maintaining the requirements according to the accredited management system and making the activity of the laboratories of the company DWL, NSL, WWL, WWLBO comply with the requirements of SR SR EN ISO / IEC 17025: 2006 enables us to ensure the competence of performing laboratory activities, thus contributing to the increased competitiveness of services and products offered by S.A. “Apa-Canal Chisinau”.

In order to ensure the highest quality test results, the company’s laboratories:

  • apply appropriate test methods in accordance with the latest editions of the analysis standards;
  • have competent management and technical personnel who meet the training and experience criteria required by the tests they have performed;
  • are endowed with modern equipment, metrologically checked / calibrated and maintained according to established procedures;
  • are supplied with quality reagents corresponding to European standards.

The objective of Laboratory Sector staff is to improve the activity on an ongoing basis, and to meet the requirements of the clients.

Drinking Water Laboratory (DWL) and Nistru Station Laboratory (NSL). Before reaching the consumer’s glass, drinking water supplied by S.A. “Apa-Canal Chisinau” runs a very long way, starting from the stage of raw water from the Nistru River to the water that is good for drinking. The water treatment process is very complicated, so the basic activity of the laboratories is the continuous control, during 24 hours, of the physical, chemical and microbiological characteristics of the water sources, of the water that is processed at all stages of the technological process and in the distribution networks, thus, maintaining the possibility to ensure at any time a rigorous and safe control of the quality of the raw water, treated water and water distributed to consumers in accordance with the legislation in force.

The laboratory staff checks the water quality on a daily basis, taking water samples from drinking water tanks, distribution network, artesian wells, and local fountains in the company’s management. Control points are clearly defined and are agreed with the Chisinau Public Health Center.

The quality of drinking water is checked in accordance with international method standards and the drinking characteristics are in accordance with the national legislation in force, which is in accordance with GD no. 934 of 15.08.2007 as well as with the sanitary standards in force.

Drinking Water Laboratory also performs analyses required by customers by means of contracts and orders, thus analysing both accredited and non-accredited parameters.

Drinking Water Laboratory provides water quality information on a monthly basis that can be accessed by our consumers at

Wastewater Laboratory (WWL) and Wastewater Laboratory for Business Operators (WWLBO).

Wastewater Laboratory (WWL) performs physical, chemical, biological and bacteriological determinations on the quality of wastewater, treated water, surface water, drainage and sludge deposited at sludge platforms and sludge depots from the wastewater treatment plants under the management of the enterprise, in accordance with the working schedule developed under the HG 950 of 25.11.2013, as well as under the admissible spill norms approved by the competent authorities. The Laboratory has increased powers in the systematic and complete pursuit of the quality of treated wastewater discharged into the emissary. Every day, it is taken from all control points of Chisinau Wastewater Treatment Station, from which analysis sets are carried out. The obligation to check a large number of indicators for the monitoring of the quality of the wastewater is regulated by the documents issued by the authorities in the field.

Wastewater Laboratory for Business Operators (WWLBO), the basic function is the permanent performance of physical, chemical laboratory wastewater tests, in accordance with HG 950 of 25.11.2013, discharged into the municipal collector by the business operators. WWLBO performs laboratory investigations based on orders to perform tests on wastewater samples taken by the Waste Disposal Department for Business Operators. WWLBO does not take samples of wastewater, which are taken by the Waste Disposal Department for Business Operators. All the samples received by the laboratory are coded, WWLBO collaborators do not know the origin of wastewater samples.