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Water pollution of drilled wells, a health hazard

Water pollution of drilled wells, a health hazard

Drilled well water is a source of underground water located deep underground. Many people think that, due to being underground, the well water is not polluted, or polluted, but negligible. This is a very wrong thinking.

Drilled well water is different from tap water?

Drilled well water is water taken from groundwater deep in the ground. People often drill deep into the ground to form a well to get water. Currently, only a few people use the open water well as before. Almost the well mouth was closed to the area of ​​a pipe, pumped water directly onto the tank, water tank. Drilled well water does not go through any factories to treat pollution, groundwater is pumped directly up for use.

Tap water is the source of surface water available in major rivers. This water is passed through water treatment systems in water plants. Water after being treated to meet certain standards of “clean” will be put into the pipes to the users.

Is the well water polluted? Why pollution

Almost all of the households are still using water from drilled wells that do not test for clean water quality standards. Therefore, it is not possible to know exactly what sources of well water are contaminated with. How it affects the health of the user.

But it can be confirmed with certainty that the current risk of water pollution from wells is very high. Proportional to the environmental pollution situation. Drilling well water is polluted due to the amount of domestic wastewater, industrial wastewater, livestock wastewater, fertilizers and pesticides used in agriculture, … soaked into the groundwater. The polluted surface water also seeps down to make the groundwater polluted.

Untreated wastewater to remove harmful substances, chemicals are directly discharged into the environment such as: grease waste water from machinery in industrial zones, wastewater from iron and steel smelting furnaces. , wastewater from households raising livestock and poultry is discharged directly to rivers, canals, … Chemical fertilizers, pesticides, pesticides of rice and fruit-growing families, … was sprayed straight to the ground. Long time no decomposition, the rain seeps into the groundwater.

Some pollutants are common in drilled well water and harmful to health

Well water is rich in arsenic and ammonium

This is a very common pollutant in well water. This substance is extremely toxic, the agent of cancer. Found in many areas in Hanoi and neighboring provinces. Due to pollution from wastewater in domestic and industrial zones

The harm when using water containing arsenic – arsenic: Using arsenic-contaminated water is the most common skin damage. Thick skin, horns, change in vitality, skin cancer. Then there are types of organ cancer such as lung cancer, kidney cancer, bladder cancer, ..

Well water contaminated with iron and manganese

Iron and manganese in well water is quite clear and has a fishy smell. However, when left in the air for a long time, the water will turn yellow, opaque yellow or reddish-brown. Occasionally there is yellowish floating on the surface.

The harm of use: Using manganese and iron contaminated water has a negative effect on the nervous system, creating toxins. Long-term use will affect the lungs, nervous system and cardiovascular. The most affected are children.

Salty and alum contaminated well water

The phenomenon of saline wells water is concentrated mainly in the Mekong Delta and some provinces in the Central Coast such as Quang Binh, Quang Tri, Ninh Thuan … Due to the salty surface of the surface water, the river Groundwater is also unavoidable in the same situation.

Harm: Using salty and alum contaminated well water is not good for health. Bathing with alum water can easily cause skin cells to dry, swell and flake. Using alum water to eat and drink is more likely to get intestinal diseases.


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