Reservoir
- river water is collected and stored for treatment

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Screening Tank
- screens out (removes) big objects (such as rubbish/litter, fish, leaves, branches, twigs and other parts of trees)

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Aeration system
- oxygen is added (dissolved) to rid the water of bad smell and taste

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Coagulation tank
alum - added to coagulate suspended particles into big particles so that they settle to the bottom
slaked lime - added to reduced the acidity of water

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Sedimentation tank
- particles that have settled at the bottom known as sediments are removed

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Filtration
water is passed through sand filters to remove particles

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Chlorination
chlorine is added to kill harmful microorganisms

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Fluoridation
- addition of fluoride compounds; strengthens bones and prevents tooth decay

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Storage supply tanks
- cleaned water is stored before supplied to consumers

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- Air sungai dikumpul dan ditakung untuk pembersihan

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Tangki Penskrinan
- menyingkirkan objek-objek bersaiz besar seperti sampah, ikan, daun, dahan, ranting dan bahagian-bahagian lain pokok

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Sistem Pengudaraan
- gas oksigen dilarutkan untuk mengeluarkan bau dan rasa tidak baik

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Tangki Penggumpalan
Air ditambahkan dengan
- kapur mati - mengurangkan keasidan air
- alum - menggumpalkan zarah-zarah kecil (yang terampai) kepada bahagian-bahagian yang lebih besar supaya tenggelem ke bawah

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Tangki Pengenapan
- zarah-zarah  yang tenggelam ke bawah (mendakan) dibuangkan

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Penurasan
- Air dituraskan menggunakan penapis pasir untuk mengasingkan zarah-zarah

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Pengklorinan
- Klorin ditambahkan untuk membunuh mikroorganisma merbahaya

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Penambahan Fluorin
- sebatian-sebatian fluorida ditambahkan untuk menguatkan tulang dan mencegah gigi rosak

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Tangki Pembekalan
- Air  yang telah dibersihkan ditakung sebelum dihantar kepada pengguna-pengguna.