Water analysis

Water analysis

Water is the main component of every human being, is consumed constantly and more than any other food. Water has also the function of cleaning and sanitizing, thus contributing to prevent diseases and ensuring a better quality of life, as long as the water used is healthy and clean. Otherwise, it can contribute to the spread of disease, becoming an excellent vehicle for transmission.
The increasing industrial activity and consequent production of waste is a source of POLLUTED WATER with toxic or carcinogenic substances. The quality of drinking water must be then verified often through chemical, physical and microbiological analysis of water.

The manager of water services is responsible for water quality till the water-meter; for public places and in general places where water is supplied to the public (restaurants, hotels, hospitals, condos) the manager or the administrator must ensure that the quality of drinking water is mantained till the faucet.

 

SERVICES: WATER ANALYSIS

LABORAD srl provides water analysis through standard procedures, examining the main microbiological and chemicals parameters in water. The specimen can be sent to the laboratory or one of our technicians can collect it under sterile conditions at the client.

WATER TESTING
Routine control – Chemical analysis

PARAMETER

MEASURING UNIT

LIMIT VALUE

Colour

Colourless

Odour

Odourless

Taste

Tasteless

pH

pH units

> 6,5 and < 9,5

Electric conductivity

/cm at 20°LimitiC

2500

Turbidity

NTU

1

Ammonium

mg/l

0,5

Free Chlorine

mg/l

0,2

Iron

mg/l

0,2

Nitrite

mg/l

0,5

 

Routine control – Chemical analysis

PARAMETER

MEASURING UNIT

LIMIT VALUE

Total coliforms U.F.C./100 ml Absent

Escherichia coli

U.F.C./100 ml Absent
Total bacterial load at 36°C U.F.C./ml 10

 

Other analyzed parameters:

Physico-chemical parameters:
Oxidation, Dry residue at 180°, dissolved oxygen, calcium hardness, magnesium hardness, Bromine, Calcium, Chlorine dioxide, cyanuric acid, Fluoride, Hydrazine, Magnesium, Nitrites, Nitrates, Ozone, Phosphate, Phosphorus, Potassium, Silica, Sulphates

Metals:
Iron, Manganese, Nickel, Silver, Zinc, Hexavalent Chromium, Copper, Iodine, Molybdenum

Microbiological:
Legionella spp.: The research of this bacterium is compulsory in hotels, tourist facilities, hospitals, nursing homes, spa facilities, and is recommended for all structures with plumbing older than 30 years.

Radioactivity:
Radon, Thoron (Becquerel / L): upon measurement of high levels of radioactivity in the water analyzed it can be assumed that similarly high values of radioactivity from radon are present in the air of the environments where such water is used, especially after shaking, steaming or heating.

More parameters can be considered, in addition to the standard ones listed, upon request from the client.

 

LAWS

The D. Lgs. 31/2001 is the current Italian national legislation, that regulates the quality of waters destined to human use in order to protect health from the negative effects of water pollution.

D. Lgs. 31/2001 fixes the quality standards for a series of parameters measured in waters destined to human use, dividing them in three categories:

· Microbiological (Enterococci, Escherichia coli – see “Allegato 1, Parte A” of the law).

· Chemicals (pesticides, Mercury, Nitrates, Arsenic, etc. – see “Allegato 1, Parte B” of the law). These elements and compounds are toxic or harmful for health; even if the possibility of acute toxicity occurs only in case of massive contamination from these pollutants, many of them (i.e. heavy metals) can accumulate in the organism and have long term harmful effects on health.

· Markers (pH, hardnes, odour, colour, turbidity, Aluminium, etc. – see “Allegato I, Parte C” of the law). Several of these parameters are a natural characteristic of drinking water, other are instead determined by the treatment of the water (i.e. chlorine is a residual disinfectant). It is then necessary to verify the organoleptic qualities and physico-chemical proprieties of the water and also the effectiveness of potabilization treatments.

DEFINITIONS

– Waters destined to human use are all those waters, treated and untreated, for drinking, preparation of food or beverages or other domestic uses, regardless of their origin, whether supplied by an aqueduct, a tank, bottles or other containers.