Why is my well water suddenly rusty
Well water stinks: 8 causes of a bad smell from the well
Fountains in the home garden are a stylish decorative element and ideally they provide free water. So it's no wonder that they are becoming increasingly popular. But whether newly built or already years old, it can happen that the well water stinks. This can have different causes. Usually, the smell tells you where the problem is. Find out more in the professional magazine.
Odors - chlorine scent
If a chlorine smell is perceived in the well water, this does not necessarily have to require countermeasures. Chlorine is mainly used by the waterworks after heavy rain showers, as this causes the soil to lose its filter function. The chlorine is used to support this task and to kill bacteria in the groundwater. Normal is a maximum of 0.3 milligrams per liter. Sensitive noses can smell this. The body can tolerate chlorine in this small amount, but it is still advisable not to use the well water as drinking water until one or two days after heavy rain showers. By then, the smell and, accordingly, the chlorine content should have submerged.
Over time, all sorts of substances settle in the well, especially if it has a continuously high water level and only little well water is drawn. Many well owners clean / disinfect their free water source with cleaning agents that contain chlorine. The chlorine is distributed in the water and may linger on the walls of the well. It requires a thorough flushing of the well and / or a complete exhaustion of the well water in order to remove all residues of the chlorine-containing cleaning agent. If you have a lot of patience, you can wait until the chlorine has evaporated. The higher the well walls and the water level, the longer it will take.
Oil smell with or without an oil film
An oil smell is noticeable many times after a new well has been put into operation. Although it is forbidden, some well builders use a so-called cutting oil for construction machinery / well drills because it protects against corrosion, among other things. However, it is insoluble in water and often settles on the walls. When it comes into contact with water, a light oil film usually forms and, above all, there is an oil smell. The well builder should be informed immediately and asked to remedy the problem.
There is not always an oil smell and an oil film on the well builder. It is quite possible that oil from the surrounding area has found its way into the groundwater. This can result in an oil change in the neighbor's car or in an engine oil runs on an unpaved surface. Other causes of oil in the groundwater are also possible. The problem can usually be solved by emptying the well until the odor and oil film have disappeared.
If well water stinks of mold, as is often known from ponds, then this is usually due to intensive biofilm formation in the well or in the pipe systems. This is a slime that increases as the amount of stench increases. In well areas and pipelines, it is made up of the following substances:
The mostly tough mucus is often difficult to remove. Various products are available that can be used to clean pipes yourself. The best and most reliable thing to do is to hire a specialist company who will take care of pipe and well cleaning. When building a well, care should be taken that only smoothly coated materials are used, because the slime mainly settles on rough surfaces.
If the well water smells of feces, it is certainly due to the ingress of extraneous water from drainage pipes. Basically, only a well builder or a plumbing specialist can explain why and why. The cause must be investigated and the damage repaired. Then pump out well water until it no longer stinks of faeces.
The following are often possible causes:
- Damaged sewer pipe due to well construction - faeces run directly into the groundwater
- Broken pipe in a sewer pipe
- Leaky septic tank set in the ground or leaking waste holding tank (can also be with neighbors)
- Rotten (egg) smell
If the well water generally smells putrid or if the smell of the water is reminiscent of rotten eggs, the causes are mostly organic or inorganic substances in the earth. A foul smell can come from compost, which is supposed to rot in the earth, as well as from artificial fertilizers. Through watering or rain, the substances get deeper into the ground. If hydrogen sulphide forms, it creates a foul odor that spreads into the groundwater system. If the groundwater reaches the well area, the stench rises to the top and of course into the well water.
Elimination and handling
- Wait until the rotting is complete and the hydrogen sulfide formation decreases
- Search the surrounding earth for said substances and, if necessary, replace the earth in the vicinity
- Filter out the hydrogen sulfide from the water in the well using a special filter system
- Well ventilation supports the rapid removal of the gas
- High doses of H2S are highly toxic and must never get into the body
- Iron and manganese
Rusty pipelines in the area or other iron and manganese in the ground can give the water in the well area a typical metallic odor. This can also be tasted. As the odor increases, the water turns reddish-brown. It stains fabrics and other metals.
If a rusty pipe in the ground is to blame for the metal smell in the water, it is important to locate it and replace it with a new one. Smaller metallic objects that are at the bottom of the floor can also be responsible for this. This is to be searched accordingly and the water to be pumped up. For clear, metal-free water, after removing the "culprit", it is sufficient to pump out the water or to take it as far and often as possible from the garden fountain. When fresh, metal-free groundwater flows in, the rust color disappears quickly and it no longer smells of metal.
If well water stinks, it can have various causes. It becomes more expensive and / or time consuming if the problem is underground. Most often, however, the foul sulfur odor appears, which can be easily controlled with suitable filter technology and a little patience, as described here.
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