In Environment Canterbury's Natural Resources Regional Plan the definition of a Community drinking water supply is as follows.

 

Community drinking water supply means a public or privately owned supply providing drinking-water to at least 15 dwelling houses or other buildings year-round, or to at least 25 people, but serving the same people for more than six months each year. It includes:

1) piped water supply networks which supply more than 15 service connections, year-round, including to urban areas, rural-residential and residential subdivisions, and commercial and industrial areas;

2) schools and other education facilities with more than 25 staff and students, and industrial and commercial premises with more than 25 permanent staff;

 

It does not include:

a) water supplies to subdivisions and water schemes with less than 15 residential connections; or

b) any water supply which serves transient populations, such as  camp grounds, hotels/motels, restaurants, except  those premises with more than 25 permanent residents or staff.

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