Check Potable

Check Potable


CHECK POTABLE (Drinking water test) includes basic parameters on drinking water, according to Council Directive 98/83/EC, on the quality of water intended for human consumption (In Spain: Real Decreto 140/2003), checking organoleptic and microbiological quality of the water used for human consumption.

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What parameters are included in the analysis?


Ammonium info

Ammonium is a key indicator of water contamination.

The presence of ammonium or ammonia in water is usually associated to organic pollution (wastes composed of animal, human, plant material, fertilizers, etc.) so it serves as an indicator of water pollution.
The presence of ammonia does not often pose a risk to health but it may be related to other problems such as bacterial contamination, the presence of other contaminants, the reduction of chloridation resistance and smell and taste disorders.
The maximum acceptable concentration of ammonia in drinking water for human consumption is 0.5 mg/l.


Total Coliforms info

Are the standard by which microbiological contamination is measured..

Total coliform bacteria can not only occur in human or animal feces but also can be found in the environment. They are, on the one hand, indicators of microbiological contamination and, on the other hand, their presence provides evidence regarding the adequacy of disinfection.
This parameter is measured in cfu (colony forming units) per 100 ml or 250 ml volume.
The maximum acceptable concentration of total coliforms in drinking water is 0 cfu/100ml.


Color info

Measurement of water color.

Water may be colored due to many causes (organic matter -plant debris, algae, etc.-, iron or other metals, etc...).
The color measurement is made in water by comparison with a standard. The result is often expressed as mg/l of Pt/Co.
Water legislation for human consumption (Royal Decree 140/2003) sets a parameter value to the color of 15 mg/l Pt/Co.


Conductivity at 20ºC info

Conductivity is used to measure water salinity.

Conductivity indicates the level of dissolved salts by measuring the ability of a solution to carry an electric current, i.e. the larger the number of dissolved salts (chloride, sulphate, bicarbonate, etc), the more conductive water is; therefore, by measuring the conductivity of water, we obtain the degree of water salinity.
Variation in conductivity can result through changes in geology of an area. The natural conductivity of water varies from very low values (50 uS/cm), especially in granite (non- calcareous) areas (North of Spain) to very high values (1000 uS/cm), especially in calcareous areas (East of Spain).
The maximum conductivity level in drinking water recommended is 2000 uS/cm.


E.Coli info

E. Coli is a type of fecal coliform bacteria.

E. Coli is an ideal indicator of fecal contamination. It serves as a key indicator of possible water contamination caused by dumping sewage water.
E. Coli concentrations are measured in cfu (colony-forming units) in 100 or 250 ml.


Odour info

organoleptic check of odor in water.

Water intended for human consumption must be completely odorless. If odor is detected in the water, it could indicate possible presence of pollution (organic matter, chemicals, etc.).
The odor is determined sensorially (organoleptic method), the result being expressed in terms of the dilution which sets the threshold of perception (dilution index).


pH info

pH is a measure of how acidic, basic or neutral water is.

pH is a measurement of the acidity or basic quality of water. The pH scale ranges from 0 to 14; a pH of 7 is neutral, a pH less than 7 is acidic and a pH greater than 7 is basic. The pH of natural water hovers between 6.5 and 8.5.
Although pH is not a primary concern for consumers, it is an important water quality parameter. It is associated with the effectiveness of disinfection processes and it can serve as an indicator that contamination may have occurred or that water treatment equipments have been damaged.
pH values in drinking water range from 6.5 to 9.5. The recommended range for pH in swimming-pool water is 7.5; if pH is below 6.0 or above 9.0, it will negatively affect swimmer comfort and pH level should be restored to the optimum range.


Taste info

Organoleptic analysis of taste in drinking water.


Turbidity info

Turbidity is a measure of the amount of suspended particles in water.

Water turbidity may be caused by the presence of particles which come from source water. There are various parameters influencing the cloudiness of water. Some of these are inadequate water treatment, biofilm detachment in water distribution systems.
Particles may protect bacteria from disinfection and may encourage bacterial growth.
When water is disinfected, its turbidity level should be low so that the treatment can be effective.
The maximum acceptable level of turbidity for drinking water in distribution systems is 5 NTU.
The recommended level of turbidity in swimming-pool water should be less than 20 NTU. If turbidity is higher than 20 NTU, it will negatively affect swimmer comfort. The optimum level should be below 5 NTU.

Sample ID

Complete your analysis

Alkalinity measures the presence of salts usually responsible for incrustations (carbonates, bicarbonates and hydroxides)

Metal used as a coagulant in some water treatment plants

A metalloid which is a natural component of the Earth’s crust

Aerobic bacteria reveal the presence of microorganisms in water

Bicarbonates are associated with the production of incrustation on water facilities

Boron is a micronutrient necessary for the plants, but in high concentrations could be toxic

Calcium is a cation and is a determinant of water hardness

Mineral present in water mainly due to the dissolution of limestone or carbonated

Chlorine is the most widely used disinfectant for water treatment, especially for drinking water or swimming pool water

Chlorides reveal the presence of salts in water

Clostridium perfringens indexes the presence of fecal contamination

Metal used in building construction materials (pipes, etc.)

Chromium metal is largely related to metal fittings such as pipes

Water hardness is caused by the presence of dissolved minerals

Microorganisms related to microbiological contamination of water

Metal that can be associated with minerals or industrial activities

Water fluoridation is considered as necessary. However, high concentrations of fluoride in water can be detrimental to health

Phosphates are essential elements in nature

Pesticide commonly used to kill weeds (herbicide)

Hydrocarbons or mineral oils may be present in the water

Iron is largely related to metal fittings such as pipes

Langelier index reports about fouling or aggressive properties of water

Legionella is a bacteria that may be present in water and can cause legionellosis, a lung disease caused by breathing air with water sprays

Magnesium is primarily responsible for water hardness

Manganese is a necessary element for life, but in high concentrations can be toxic

Toxic metal whose presence can be naturally or by human activity

Nickel is largely related to metal fittings and pipes

High nitrate concentrations are associated with agricultural and livestock activities

Nitrites can be a significant indicator to determine contamination

Oxidizability measures oxidizable organic matter present in water pH (+7.50€)

Pesticides are substances intended for preventing, destroying, repelling or mitigating any pest

Lead is largely related to old plumbing installation systems

Potassium is present in water

The redox potential (ORP) is a measure of water reduction and oxidation

Psedomonas aeruginosa is a common bacterium found in soil and water

Total dissolved solids (TDS) refers to a measure of the residual minerals dissolved in water

Organoleptic analysis of taste in drinking water

Determination of dissolved silica in water

Sodium is largely related to water salinity

Parameter measuring the suspended solids in the water

Sulphates are dissolved salts


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