By Plimun Web Design
Villanueva Clinical Laboratory has been performing Bacteriological Water Analysis for 15 years and Physico-Chemical Water Analysis for 5 years now. We have consistently updated our methods through seminars and workshops in Visayas and Luzon. Our results conform with the 2007 Phillipine National Standards For Drinking Water (PNSDW)
Why should drinking water be analyzed at Villanueva Clinical Laboratory?
Lots of diseases are transmitted through drinking water. Some of these diseases include Cholera, Typhoid, Rotavirus, and Hepatitis A. These diseases are transmitted through the fecal-oral route, meaning they appear in water that is contaminated by human feces. Bacteriological Water Analysis determines if drinking water is contaminated by human feces, and is therefore not potable.
Other contents of water also determine its potability, plus its taste and texture. Some substances, at high levels, can be toxic. Physico-Chemical Water Analysis determines if these substances are safe levels.
METHODS USED FOR BACTERIOLOGICAL ANALYSIS:
MULTIPLE TUBE FERMENTATION TECHNIQUE – Detects the presence of coliforms, especially Escherichia coli.
HETEROTROPHIC PLATE COUNT (HPC) – This method is used to indicate the effectiveness of water treatment.
PARAMETERS OF PHYSICO-CHEMICAL ANALYSIS
pH – In simple terms, it is the concentration of Hydrogen ions in drinking water. It determines the acidity or alkalinity of water. According to the World Health Organization, the safe range is pH 6.5 to 8.5.
Color – The color in water may result from the presence of metallic ions such as iron and manganese, humus and peat materials, plankton, weed and industrial waste. Although Clear is the optimum color, normal range is 5 TCU.
Odor – odor is determined by water contamination and its extent, and effectiveness of water treatment. It is a subjective test, and normal result is unobjectionable.
Turbidity – Measurement of turbidity is important because it is one of the visual factors affecting consumer acceptance of the product.
Total Hardness – Hardness represents the total concentration of calcium and magnesium ions expressed as calcium carbonate. Too much calcium and magnesium can result in increased requirements of soap for cleaning and a scaly buildup on pipes. Very high levels of Magnesium ions can have diuresis among consumers. Very hard water can lead to deposits clogging pipes.
Nitrate – Drinking water containing excessive amounts of nitrate can cause infant methemeglobinemia.
Nitrite – Infants younger than six months who are given water containing nitrite in excessive amounts could become seriously ill.
Iron – High levels of iron in water result in what we call “tina^” in the vernacular. It can cause staining of laundry and porcelain, and also a bittersweet astringent taste detectable by some persons at levels above 1 or 2 mg/L.
Chlorides – Chlorides is one of the major inorganic anions presents in water and sewage. Waters containing 250 mg/L chloride may have a detectable salty taste. High chloride content exerts deleterious effect on metallic pipes and structures, as well as in agricultural plants.
Sulfates – Sulfate is widely distributed in nature and may be present in natural water in concentrations ranging from a few to several thousand milligrams per liter. Sodium and Magnesium Sulfate, when present in high numbers, can cause diarrhea.
Total Dissolved Solids – High levels of dissolved solids in industrial wastes can cause foaming in boilers and interferences with clearness, color or taste of many finished products.
Bacteriological water analysis: Obtain sterile bottles from the nearest branch of Villanueva Clinical Laboratory. A PHP 50.00 deposit is required per bottle, deductible from the total price of the test. Fill these with the sample and send immediately to any of our branches. Water samples may also be collected and stored in the refrigerator prior to travel. If transit time is more than an hour, place the bottle with the sample/s in a cooler with ice cubes.
Physico-chemical water analysis: 1 liter of sample in any clean container is acceptable.
Villanueva Clinical Laboratory has recently adopted discounted prices!
Bacteriological water analysis (per sample): PHP 300.00
Physico-chemical water analysis (per sample): PHP 1200.00
Bacteriological water analysis: Results are available 7 days after receipt of specimen sample.
Physico-chemical water analysis: Results are available 5 days after receipt of specimen sample.
You may access your results online for free!