Arisu
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Arisu is the current name of the
tap water Tap water (also known as running water, piped water or municipal water) is water supplied through a Tap (valve), tap, a water dispenser valve. In many countries, tap water usually has the quality of drinking water. Tap water is commonly used f ...
in
Seoul Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...
,
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
.


Name

Arisu was named in 2004, the former name for Han River in ancient
Goguryeo Goguryeo (37 BC – 668 AD) (; ; Old Korean: Guryeo) also later known as Goryeo (; ; Middle Korean: 고ᇢ롕〮, ''kwòwlyéy''), was a Korean kingdom which was located on the northern and central parts of the Korea, Korean Peninsula an ...
, with the combination of 'Ari,' which means 'big' in Korean, and 'Su,' meaning, 'water.' It is also the name of the water treatment plant located in Seoul, South Korea.


Quality and supply


Water source management

Because Arisu is supplied to all areas of the city of Seoul, it is very strictly administered by the water treatment plant. The Seoul Metropolitan Government engages in 24-hour real-time protection and surveillance of the water source to deliver clean and safe tap water. Regular assessments are made of 41 different indicators at 33 water source points and 135 indicators at the six water intake points. Seven indicators, including
algae Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct clades. Such organisms range from unicellular ...
(chlorophyll-a) and
phenol Phenol (also known as carbolic acid, phenolic acid, or benzenol) is an aromatic organic compound with the molecular formula . It is a white crystalline solid that is volatile and can catch fire. The molecule consists of a phenyl group () ...
, are especially monitored automatically around the clock. The Guui plant operates a biological early warning system using water fleas in addition to installing barriers to block oil from flowing into the water source. It is being served to more than ten million people living in Seoul and the metropolitan region of South Korea. Households with low-income are provided with 21 million bottles of Arisu.


Water purification system

The Office of Waterworks Seoul Metropolitan Government Starting with the Yeongdeungpo Purification Plant in 2010, Seoul Metropolitan Government will augment the current average purification treatment method with the new ozone and granular activated carbon (or charcoal) system and expand this new advanced system to six water purification centers by 2015. The Advanced Water Purification System is a significantly more advanced water purification process when compared to previous water purification systems, and can eliminate the unpleasant taste from poor water quality and microbial elements such as residual antibiotics.


Seoul Water-Now system

Seoul Water-Now System is an automatic supervisional system of Arisu. It started in 2004, to prevent water contamination. It checks all the process of producing and supplying Arisu. Total of 156 places are checking its quality. The Office of Waterworks Seoul Metropolitan Government won the United Nations Public Service Awards in 2009 for the system.


References

Water treatment facilities Water in Seoul {{Seoul-stub