Basic requirements of sanitary standard for drinking water
Hygienic standard for drinking water refers to the standard that specifies the content and quality of various substances and microorganisms in drinking water. Its basic requirements are as follows:
1. Appearance requirements
Drinking water should be clear and transparent, and there should be no suspended matter, sediment and turbidity.
2. Smell and taste requirements
Drinking water should have no peculiar smell, peculiar smell, and no abnormal smell such as foul smell, fishy smell and sour taste.
3. Requirements for total coliforms and Escherichia coli
The total coliform bacteria and Escherichia coli in drinking water should meet the national standards to ensure the hygiene and safety of water quality.
4. Requirements for heavy metals and organic substances
The contents of heavy metals and organic substances in drinking water should be lower than the national standards to prevent adverse effects on human health.
5. Requirements for radioactive materials
The content of radioactive substances in drinking water should be lower than the national standard to protect the public from the radiation of radioactive substances.
6. Microbial index requirements
The microbial indicators of drinking water should meet the national standards to ensure the hygiene and safety of water quality.
operation sequence/order
In order to ensure the hygiene and safety of drinking water, we can follow the following steps:
1. Selection of water source
When selecting water sources, we should consider the sanitation and water quality of water sources, and try to choose clean and pollution-free water sources.
2. Water treatment
Proper water treatment of source water, including filtration, precipitation, disinfection and other steps, to remove suspended solids, impurities and microorganisms.
3. Water quality monitoring
Regularly monitor the quality of treated drinking water, including appearance, smell, taste, microbial indicators and chemical indicators.
4. Water quality regulation
According to the monitoring results, adjust the quality of drinking water to ensure that it meets the requirements of drinking water hygiene standards.
5. Water quality maintenance
In the process of storage, transportation and use of drinking water, the water quality must be kept hygienic and safe to prevent secondary pollution.
final result
Hygienic standard of drinking water is the basic requirement to ensure public health, and each of us should pay attention to the hygiene and safety of drinking water. Through the correct operation steps, ensure the quality of drinking water reaches the standard and protect the health of yourself and your family.
Please remember that the health and safety of drinking water is everyone's responsibility.