About Macao SAR

Salinity level of potable water

Daily information on salinity level of potable water

Index Date Time Level Unit Description

Low/Green
2018-02-23 09:30:00 16.2 mg/l The potable water salinity level on 2018-02-23 is 16.2 mg/litre, and is classified as “Low” or “Green” and all parameters are well within WHO standard.

Low/Green
2018-02-22 09:30:00 16.4 mg/l The potable water salinity level on 2018-02-22 is 16.4 mg/litre, and is classified as “Low” or “Green” and all parameters are well within WHO standard.

Low/Green
2018-02-21 09:30:00 17.8 mg/l The potable water salinity level on 2018-02-21 is 17.8 mg/litre, and is classified as “Low” or “Green” and all parameters are well within WHO standard.

Salinity Scale for Potable Water

Salinity Level Salinity Index (mg/L) Water Quality Status Health Implications and Advices*
Low 10 – 250 Water Quality well within WHO Guidelines for drinking-water quality.
  • None expected
Moderate 251 – 400 All parameters within standard except Chloride and Sodium.
  • May cause tastes discomfort for the general public as salinity increases;
  • People with existing hypertension, heart or chronic illnesses should seek for doctor’s advice or refer to the recommendation by the Health Bureau.
Fairly High
401 – 600 All parameters within standard except Chloride, Sodium and Potassium.
  • Follow the recommendation by the Health Bureau, increase the proportion of diluting potable water with purified or distilled water.
High > 600 All parameters within standard except Chloride, Sodium, Potassium and Magnesium.
  • Follow the recommendation by the Health Bureau and consider diluting potable water with purified or distilled water.

* The above recommendation should be adjusted according to individual needs.

Content provider: Establishing a Water Conservation Society Working Group

Last updated: 2018-02-23 15:30

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Chinese and Portuguese are the official languages of Macao, the English version of the web site is the translation from the Chinese originals and is provided for reference only.