River water quality was conducted at Sungai Taman Tasik Utama Ayer Keroh on 20/01/2011.
The parties involved in this studies are:
Senior technichian : Hj. Farnoh bin Salam
Technicians : Pn Rosleeza binti Asman
: En Kamarul Hazman bin Abu Hurairah
Practical Students : Siti Hajar bt Abdol Gani
: Nur Amirah bt Sulaiman
Sungai Taman Tasik Utama Ayer Keroh
Methodology
The study was monitored by using physical, chemical and biological parameters.
Material and apparatus used to conduct the river auditing study
Chemical monitoring to analyze the quality of water and determine specific pollutants
Biological monitoring to determine how suitable waterbody is for the support of aquatic life
Results :
Physical Monitoring
| Attribute | Observation |
| Color & Appearance | Green |
| Smell | Little odor |
| Vegetation | Present |
| Animals | Present |
| Activities | Land use, human activities, points of interest |
Chemical monitoring
| Variable | Appearance | Result | Rank |
| pH | Greenish | 7 | Excellent |
| DO | White pink | 48% sat | Poor |
| Turbidity | Slightly clear | 40 JTU | Fair |
| Phosphate | Blue | 2 ppm | Good |
| Nitrate | Red | 20ppm | Poor |
| Temperature | Initial = 24oC Final = 28oC | 2oC | Excellent |
Biological Monitoring
| Animal | Score |
| Dragonfly nymphs | 6 |
| Non-biting midge larvae | 2 |
| Other snails | 3 |
| River prawns | 8 |
| Total score | 19 |
| Number of animal type | 4 |
| Biological Water Quality Index | 4.75: rather dirty water- average |
Conclusion
River at Taman Tasik Utama was slightly polluted. The pollution in water affect amount of oxygen present. For example fertilizers, detergent, organic waste and sewage all decrease amount of oxygen in water.
