Microbiological laboratory of Infoxvodokanal

In April 2008, after reconstruction and retooling, Infoxvodokanal’s microbiological laboratory started its work.

Cleaning of waste waters is performed at two sewage treatment plants: “Uzhnaya” and “Severnaya”. Quality control of tap water is performed by Infoxvodokanal’s central chemical and bacteriological laboratory. The tests are performed based on 60 indicators. The safety of drinking water in terms of its microbiological contents, is defined by these indicators. They characterize with a high probability the absence of dangerous biological contaminants. Tests of the chemical contents of drinking water allow the determination of the safety of water based on toxicity, carcinogenic, and mutagenic substances of an organic and non-organic nature.

The laboratory is equipped with modern devices and equipment of domestic and foreign producers (Shimadzu company): infra-red photometers, ultra-violet spectrophotometers, atomic-absorbic spectro-photometers, hydrogen analyzers, and gas and liquid chromatographs. After cleaning the water with the reagents at the water purification center at the Dnestr water treatment station and chlorine disinfection, the water is passed through 7 water pipes to the pumping stations at Odessa. There, the water goes through pre-cleaning with chlorine and then is supplied to the city water pipeline network.

NEW WATER QUALITY STANDARDS: CHEMISTS' OPINION

In September there was a scientific practical chemists conference in Odessa, where the staff members of Infoxvodokanal’s central chemical-bacteriological laboratory took part.

The director of the laboratory, Anatoly Polishuk, and the assistant director, Tatiyana Mozolevskaya, presented the study: “Hydride and flameless ways of atomic-absorbic detection of arsenic and selenium in some natural waters.” In addition, the chemists of Infoxvodokanal prepared a report on, “The future of the quality control of drinking water”. In it the project of the new DSTU was analyzed "Drinking water. Requirements and methods of quality control.

In the project of the new DSTU drinking water is divided into two types:

• "drinking water of systems of general water delivery - mainly used for sanitary and domestic human needs",

• "water of high quality - water of not general water delivery, purified (not bottled, bottled) - produced at the point of consumption to meet physiological needs (3-5 litters per day) without delivering it to the distribution network".

According to the scientists, this concept of DSTU contradicts not only the existing legislative and normative-legal base of Ukraine, but also the 98/83/ЕС directive concerning the quality of the drinking water. The directive states, “Potable water is all the water in its initial state or after its processing, used for drinking, cooking, food preparation and other household use, independent of its origin: whether provided from a distribution network, from a tanker, in bottles or in containers”. Therefore, all the drinking water has to be of the same quality.

From a financial point of view, making up a parallel system of water supply is also not cost effective because the tariffs on water use are mainly based on water supply expenses – about 50%, while water preparation accounts for only 6%.

The government does not specify who is going to provide the quality control of ”high quality water, made in the place of consumption”, and it will probably be the responsibility of the consumer. In reality, the government freezes Ukrainian water canal development, and does not resolve the collected problems, transferring them to the shoulders of the citizens.

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In the picture: Infoxvodokanal laboratory director Anatoly Polishuk

Infoxvodokanal

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