Koks vanduo Alytuje - laboratorijos specialistų ir kontrolierių komentarai

Summary

The video provides an in-depth look at the quality and journey of drinking water in Alytus, Lithuania. It describes the process of water extraction from deep groundwater sources, filtration, and distribution to households. The city ensures high water quality by adhering to hygiene norms and conducting regular microbiological and chemical tests. The water is tested for factors like nitrates, iron, manganese, and bacteria, ensuring it meets safety standards. Despite occasional complaints regarding taste or slight discoloration, the water remains safe and of excellent quality, well below legal limits for contaminants.

Takeaways

• 😀 Water quality in Alytus is carefully managed through a comprehensive system involving deep pumps, filtration, and storage reservoirs.
• 😀 The water treatment process ensures that Alytus residents receive high-quality drinking water, exceeding even the set hygiene standards.
• 😀 Drinking water in Alytus is regularly monitored, with 64 sample collection points around the city, including schools, shops, and individual homes.
• 😀 Every month, around 70 water samples are taken to monitor the quality of drinking water in Alytus.
• 😀 Microbiological tests, including checks for E. coli, coliform bacteria, and enterococci, are performed to ensure water safety.
• 😀 Chemical testing is also conducted, measuring parameters such as iron, manganese, ammonia, nitrites, and nitrates.
• 😀 In 2023, nearly 1000 water samples were tested, with almost 7000 individual analyses carried out to ensure water safety.
• 😀 Alytus' drinking water quality is well below the permitted levels of nitrates, with concentrations at 2-3 mg/L (20 times lower than the limit).
• 😀 The water meets safety standards and is free from harmful chemical and toxic contaminants, based on regular testing by the State Food and Veterinary Service.
• 😀 Issues such as iron taste in the water may occur due to the natural presence of iron and manganese in underground water, but these do not affect health.
• 😀 The hardness of water, caused by calcium and magnesium ions, is not regulated in terms of maximum levels, as these are essential for human health and biochemical processes.

Q & A

What is the process through which drinking water reaches Alytus residents' homes?

The water is extracted using deep well pumps from water sources. It then travels to the second water station, where it goes through filters, is stored in reservoirs, and finally pumped into high zone reservoirs. From there, it travels through pipelines into people's homes.

How is the quality of drinking water in Alytus ensured?

The quality of drinking water is ensured by following the hygiene standards set for water safety and quality. This includes regular water sampling and testing. The city has an annual program that is coordinated with the State Food and Veterinary Service to monitor water quality at over 60 designated sampling locations.

How many water samples are taken for testing in Alytus?

Every year, approximately 70 water samples are taken from around 64 designated locations across Alytus, including schools, stores, public fountains, and individual homes.

What types of tests are performed on drinking water in Alytus?

Tests include microbiological analysis to detect harmful bacteria such as Escherichia coli, coliform bacteria, and enterococci, as well as chemical tests to measure levels of iron, manganese, nitrates, nitrites, and ammonium.

What was the scope of water quality testing in Alytus last year?

In the previous year, about 1,000 water samples were tested, and nearly 7,000 analyses were conducted on the samples.

How does the drinking water in Alytus compare to the required hygiene standards?

Alytus water exceeds the required hygiene standards. For instance, nitrate levels in the drinking water are 20 times lower than the maximum allowed concentration, and the water also meets all microbiological and chemical safety requirements.

What are the nitrate levels in Alytus' drinking water compared to the maximum allowable concentration?

The nitrate levels in Alytus' drinking water are between 2 and 3 mg per liter, which is 20 times lower than the allowed limit of 50 mg per liter.

Have there been any concerns with chemical and toxic indicators in the water in Alytus?

No, there have been no issues with chemical or toxic indicators in Alytus' drinking water. According to the analysis, no harmful chemicals were detected in the public drinking water in the past year.

Why do some residents complain about the taste of drinking water in Alytus?

Residents sometimes complain about a metallic taste in the water due to the presence of iron and manganese in underground water sources. These elements can affect the taste, but they are within the acceptable limits and do not pose health risks.

What causes the water to sometimes appear cloudy or have a reddish tint in Alytus?

Cloudiness or a reddish tint in the water is often caused by sediment or iron and manganese levels being temporarily elevated after water pipeline repairs or breakages. These issues are resolved by flushing the water pipes after maintenance.