What is water quality standard Malaysia?

Drinking Water Quality Standard Drinking water must be clear, and does not have objectionable taste, colour and odour. It must be pleasant to drink and free from all harmful organisms, chemical substances and radionuclides in amounts, which could constitute a hazard to the health of the consumer.

How do the quality of river water in Malaysia is Categorised?

The results showed that temperature, pH, conductivity, TDS, SO4, and TH were classified as class I, while DO, turbidity, and BOD were categorized under class II, and NH3-N, TSS, COD, and OG were categorized as class III based on NWQS, Malaysia.

What is the normal BOD reported for natural waters in Malaysia?

Table 2.

Sub Index & Water Quality Index	Index Range
Clean	Polluted
Biochemical Oxygen Demand(BOD)	91 – 100	0 – 79
Ammoniacal Nitrogen(NH3-N)	92 – 100	0 – 70
Suspended Solids(SS)	76 – 100	0 – 69

What are the 3 types of water quality standards?

Water quality standards consist of three core components. This includes designated uses of a water body, criteria to protect designated uses, and antidegradation requirements to protect existing uses and high quality/high value waters.

What is Class I water quality?

Class I Conservation of natural environment. Water Supply I – Practically no treatment necessary. Fishery I – Very sensitive aquatic species. Class IIA Water Supply II – Conventional treatment required.

What is the pH of tap water in Malaysia?

between 5.81 to 7.41
Study by [32] reported pH levels in drinking water between 5.81 to 7.41 which were slightly acidic for some of the samples.

What is Class 2 water quality?

Class IIA Water Supply II – Conventional treatment required. Fishery II – Sensitive aquatic species. Class IIB Recreational use with body contact. Class III Water Supply III – Extensive treatment required.

What is water quality classification?

Water quality can be classified into four types—potable water, palatable water, contaminated (polluted) water, and infected water [7]. The most common scientific definitions of these types of water quality are as follows: Potable water: It is safe to drink, pleasant to taste, and usable for domestic purposes [1, 7].

How many rivers in Malaysia are polluted?

This incident happened in 2019, affecting 6,000 people, and 2,775 (mainly school students) were hospitalised. According to the Department of Environment (DoE), 195 rivers in Malaysia are slightly polluted, and 34 are polluted. In Selangor, 30 rivers are slightly polluted, while three are polluted.

What is a Class B water?

B/AA. or B/A. Water quality is. threatened. Water quality goal is Class AA or A.

What is a Class II water?

Class I – Potable Water Supplies. Fourteen general areas throughout the state, including impoundments and associated tributaries, certain lakes, rivers or portions of rivers, used as a source of potable water. Class II – Shellfish Propagation or Harvesting. Generally coastal waters where shellfish harvesting occurs.

Is KL tap water safe to drink?

Is tap water safe to drink in Malaysia? The answer is simply yes. Malaysian tap water is safe and clean to drink, only when it comes straight out of the water treatment plant.

What is the standard quality of drinking water?

Drinking Water Quality Standards

S.No.	Parameters	Drinking water IS 10500 : 2012
1	Odor	Agreeable
2	Taste	Agreeable
3	pH	6.5 to 8.5
4	TDS (mg/l)	500

What is Class 1 water quality?

Class I : Conservation of natural environment. Water Supply 1 – practically no treatment necessary. Fishery 1 – very sensitive aquatic species. Class IIA : Water Supply II – conventional treatment required.

Which river is most polluted in Malaysia?

There are around 1000 rivers the that have become major sources of plastic pollution in our oceans.

How bad is water pollution in Malaysia?

According to the Department of Environment (DoE), 195 rivers in Malaysia are slightly polluted, and 34 are polluted. In Selangor, 30 rivers are slightly polluted, while three are polluted.

How to determine river water quality in Malaysia?

The present day, method of determining river water quality in Malaysia is based mainly on physical and chemical parameters. Concentration on chemical and physical parameters is particularly surprising in judging natural waters where the main aim is often preservation of biological amenities.

Are water quality index and effluent discharge standards consistent in Malaysia?

Inconsistencies were observed between the water quality index (WQI) and the effluent discharge standards of the environmental quality act (EQA) in Malaysia.

What are the specific (normalized) flow indexes for Malaysian rivers?

Rating curves for the specific (normalized) flow indexes were developed to match the local climate and weather conditions (Figure 19). The cut off point of specific flow for dry and rainy day was considered as 0.05 m3/s/km2, which is recommended by JICA and commonly used by the professionals as a typical value of baseflow in Malaysian rivers.

How many rivers are there in Malaysia?

Malaysia is a tropical country blessed with abundant rainfall throughout the year, yet the nation is still experiencing water shortage and issues with water quality. The Department of Environment in the 2017 Annual Report stated that almost 63.94% (144) out of 477 rivers in Malaysia are categorized as Class II whereas 30.19% (144) are in Class III.