Friday, April 12, 2024
Environmental Management

Meaning and Difference between Palatable Water and Potable Water

If your home water comes from a public water supply, it has been tested and meets the Environmental Protection Agency standards for drinking water. If you use a private well, however, you are responsible for assuring that the water is safe to drink.

This means that you should periodically have your water tested, make sure your well is in proper condition without faulty well caps or seals, and identify and remove potential sources of contamination to your well such as leaking septic systems or surface contamination. With a private well, you are also responsible for any treatment your water may need if it contains harmful pollutants or contaminants that affect the taste, odour, corrosiveness or hardness of the water.

What is Potable Water?

According to Academics Dictionary of Geography (Lohda, 2007), potable water is water of quality acceptable for human consumption and initially free from, or treated to remove tastes and odour, dissolved solids, suspended solids and pathogens.

Difference between Palatable Water and Potable Water

The goal of municipal water treatment is to provide water that is both palatable and potable. Palatability of water is usually regulated under the Secondary Maximum Contaminant Levels (SMCLs) (Table 8) of the US Safe Drinking Water Act while portability is usually regulated under Primary Maximum Contaminant Levels (MCLs) (Table 9)

Potable water should be safe to drink, but not necessarily aesthetically pleasing. Portability could also be affected by microbial (e.g. Giardia, Cryptosporidium), organic chemicals (e.g., alachor, chlordane, cis-1, 2- dichloroethylene, and disinfection by-products), inorganic chemicals (e.g., cadmium, copper, lead, mercury), and radionuclide.

Read Also : Wastewater Treatment and Guideline Standards

Palatable water should be aesthetically pleasing. It considers the presence of chemicals that do not pose a threat to human health. Palatability of water is usually affected by chloride, colour, corrosivity, iron, manganese, taste and odour, total dissolved solids, turbidity.

Table 7: Secondary Maximum Contaminant Levels (SMCLs)

Meaning and Difference between Palatable Water and Potable Water

Table 8: Primary Maximum Contaminant Levels (PMCLs)

image 82
StandardsWHOUSEuropean Standards

(MgL-1except otherwise stated)
Parameters


Alkalinity


Calcium


Arsenic0.0100.01
Cadmium0.0030.0050.005
Chloride250250250
Chromium0.050.10.05
Cadmium0.0030.0050.005
Conductivity-1 250 µS cm
-1 250 µS cm
Copper21.32
Cyanide0.070.20.05
E. Coli
0/250ml
Fluoride1.521.5
Iron
0.30.2
Lead0.0100.01
Magnesium


Manganese0.50.0050.005
Mercury0.001
0.001
Nitrate
5010
Nitrite
10.5
pH
6.5 – 8.5
Sodium200
200
Sulphate500250250
Salinity


TDS
500
TSS


Turbidity


Zinc35

Table 10: Limitation Guidelines for Different Treatment of Potable Water


ClassAClassBClassC
DO (mg/L)50% > 950%>950% > 8
BOD(mg/L)<3<5<7
Phosphate(mg/L)<10<20<50
Sulphate (mg/L)<150<150<150
Chloride (mg/L)<150<150<150
Nitrate (mg/L)<5<5<5
Lead (mg/L)<5<10<25
Zinc (mg/L)<5<5<10
Ph6.5 – 8.56.5 – 8.56 -9
Conductivity (uScm/m)<1000<1000<1000

Class A: Drinking water supply requiring simple physical treatment and disinfection

Class B: Drinking water supply requiring normal physical treatment and disinfections

Class C: Drinking water supply requiring physical and intensive chemical treatment, extended treatment and disinfection

Source: Chiaudani and Premazzi (1988)

WealthInWastes

Benadine Nonye is an agricultural consultant and a writer with over 12 years of professional experience in the agriculture industry. - National Diploma in Agricultural Technology - Bachelor's Degree in Agricultural Science - Master's Degree in Science Education... Visit My Websites On: 1. Agric4Profits.com - Your Comprehensive Practical Agricultural Knowledge and Farmer’s Guide Website! 2. WealthinWastes.com - For Effective Environmental Management through Proper Waste Management and Recycling Practices! Join Me On: Twitter: @benadinenonye - Instagram: benadinenonye - LinkedIn: benadinenonye - YouTube: Agric4Profits TV and WealthInWastes TV - Pinterest: BenadineNonye4u - Facebook: BenadineNonye

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