What are the four indicators of basic safe drinking water?

1. Sensory traits of water: China's drinking water standards stipulate the chromaticity of drinking water.

It should not exceed 15 degrees; The turbidity of drinking water should not exceed 1 degree, and the technical conditions for water source and water purification are limited to 3 degrees.

2. Microbial indicators of water: It is an extremely important indicator of drinking water, which is directly related to the health of drinkers. Pathogens in drinking water.

These include bacteria, viruses, and parasitic protozoa.

and worms. Its pollution** is mainly human and animal waste, and water is an important vector for the transmission of diseases.

3. Radioactivity of water.

Indicators: Reference values for total radioactivity and total P radioactivity are specified in the drinking water hygiene standards, and when these indicators exceed the reference values, a comprehensive analysis is required in order to determine the safety of drinking water.

4. Toxicological indicators of water: The health hazards brought by toxic chemical pollution in drinking water are different from those caused by microbial pollution.

The water quality is safe if it meets the requirements of the national "Sanitary Standards for Drinking Water"; Those that meet the requirements of the "Guidelines for the Implementation of Sanitary Standards for Drinking Water in Rural Areas" are considered to be basic safety.

Water volume No less than 40 to 60 litres of water per person per day is safe; Not less than 20 to 40 litres is considered basic safety.

Convenience: It is safe for manpower to fetch water for a round trip of no more than 10 minutes; It is basically safe to take no more than 20 minutes to get water.

Guarantee rate The guarantee rate of water supply is not less than 95% for safety; Not less than 90% is basically safe. These are the four indicators of water use.

The four aspects of drinking water safety guarantee are: water quantity, water quality, water convenience, and water supply guarantee rate.

1. Water volume

Not less than 35 litres per person per day.

2. Water quality

The water quality test results of centralized water supply projects shall comply with the provisions of the "Sanitary Standard for Drinking Water" (GB 5749-2006); The water quality of the bulk water supply project in Fenqiao Town can be evaluated on the spot by simple and appropriate methods such as "looking, smelling, asking, and tasting", and there are no visible impurities in the drinking water, no different color and odor, and no adverse reactions when used for long-term drinking by coarse water users.

3. Convenience of water use

The round-trip time of manual water intake shall not exceed 20 minutes, or the horizontal distance of water intake shall not exceed 800 meters, and the vertical height shall not exceed 80 meters.

4. Water supply guarantee rate

The ratio of the number of days in a year in which the actual water supply meets the standard to the total number of days in a year shall not be less than 90%.

Acres of pure water

Purified water refers to Ho without impurities, referred to as clean water or pure water, which is pure, clean, and does not contain impurities or bacteria, such as organic pollutants, inorganic salts, any additives and various impurities, and is the raw water that meets the sanitary standards of drinking water.

It is prepared by electrodialyzer method, ion exchanger method, reverse osmosis method, distillation method and other appropriate processing methods, sealed in a container, and does not contain any additives, colorless and transparent, and can be drunk directly. The best space water and distilled water on the market are pure water.

Four indicators of safe drinking water: water quality, water quantity, convenience, and guarantee rate.

Water quality. It is safe to meet the requirements of the national "Sanitary Standards for Drinking Water"; Those that meet the requirements of the "Guidelines for the Implementation of Sanitary Standards for Drinking Water in Rural Areas" are basic safety.

Water. It is safe to have a minimum of 40 to 60 litres of water per person per day; Not less than 20 to 40 litres is considered basic safety.

Convenience. It is safe for manpower to take water for no more than 10 minutes; It is basically safe to take no more than 20 minutes to get water.

Guaranteed rate. The water supply guarantee rate is not less than 95% for safety; Not less than 90% is basically safe.

All four indicators can be met to be safe water, as long as one of them is not met or basically met, normal drinking water cannot be carried out. Drinking water safety means that residents can obtain sufficient drinking water in a timely manner, and long-term drinking water does not affect personal health

Legal analysis: 1. Water quantity: The per capita daily water consumption should not be less than 35 liters (kg). In areas with poor water source conditions, difficult engineering construction, high costs, and remote and scattered populations, the per capita daily water consumption should not be less than 20 liters (kg).

2. Water quality: The water quality of centralized water supply projects should comply with the "Sanitary Standard for Drinking Water" (GB5749-2006) or its relaxed limit provisions. For the water users of the decentralized water supply (less than 20 people) project, there should be no visible impurities in the drinking water, no different color and odor, and no adverse reactions after long-term drinking.

For areas where the incidence trend of intestinal infectious diseases in the local population remains stable and there is no outbreak, the total number of colonies and disinfectant indicators in the microbial indicators may not be included in the evaluation and assessment indicators, the total coliform bacteria can only be listed as the microbial evaluation and assessment indicators in the centralized water supply project, and the water users of the decentralized water supply project with boiling drinking habits may not be evaluated and assessed the microbial indicators.

3. Convenience of water use: water supply to households. The round-trip time for manpower to fetch water without entering the home shall not exceed 20 minutes, or the horizontal distance of the round-trip shall not exceed 1 kilometer and the vertical distance shall not exceed 100 meters.

4. Water supply guarantee rate: For water users of centralized water supply projects, the water supply guarantee rate shall not be less than 90%. Water users of decentralized water supply projects should be able to supply continuous water for 70 100 days of drought.

Legal basis: Standardization Law of the People's Republic of China

Article 2 The term "standards" (including standard samples) as used in this Law refers to the technical requirements that need to be unified in the fields of agriculture, industry, service industry, and social undertakings.

Standards include national standards, industry standards, local standards, group standards, and enterprise standards. National standards are divided into mandatory standards and recommended standards, and industry standards and local standards are recommended standards.

Mandatory standards must be enforced. The State encourages the adoption of recommended standards.

Article 3 The task of standardization work is to formulate standards, organize the implementation of standards, and supervise the formulation and implementation of standards.

The safety of rural drinking water is mainly evaluated according to the "Rural Drinking Water Safety and Sanitation Evaluation Index System" issued by the Ministry of Water Resources and the Ministry of Health in 2004. As long as one of the four indicators is below the minimum value of the safety or basic safety negotiations, it cannot be classified as safe or basic safe. These four indicators are divided into water supply quality, water supply quantity, convenience and water supply guarantee rate, and the following are the specific standards:

1. Water supply quality: in line with the requirements of the national "Sanitary Standard for Drinking Water" (GB5749-2006).

2. Water supply: The amount of water that can be obtained per person per day is not less than 40-60L for safety, and 20-40L is basic safety. In arid and water-scarce areas with decentralized water supply, the amount of water available to each person per day is not less than 20 liters.

3. Convenience: It is safe for manpower to take water for no more than 10 minutes, and 20 minutes for basic safety. Water supply can be delivered to households in plain and hilly areas, and centralized water supply points can be reached in remote mountainous and pastoral areas.

4. Water supply guarantee rate: The water source guarantee rate is not less than 90 in areas with serious water shortage, and not less than 9 5 in other areas.

In order to solve the problems of rural water pressure, water quality, water quantity, water hammer and security, many smart water enterprises have put forward many solutions, such as the solution ideas proposed after the comprehensive automation, informatization and intelligent capabilities of Weipaige smart water

Maintain water quantity and quality during peak and trough periods;

Make the water supply system back-up and hot-standby;

The water supply system needs to be reasonably equipped with storage (water storage) devices to ensure continuous water supply;

Let the water supply system have a warning and early warning mechanism, and issue an alarm in time when the water supply system is abnormal;

It is necessary to have clear asset and personnel management, and establish a repair mechanism through the alarm system;

It is necessary to realize the accurate measurement of the whole process from the water source to the user, and establish production and marketing management;

There should be a performance evaluation mechanism and display of water supply safety;

Minimize personnel management and make it as unattended as possible.

It is precisely because of the support of enterprises like Weipaige Smart Water that the rural drinking water safety project can be implemented more quickly, and I believe that in the future, rural people can drink water and drink good water.