Water Quality 83% open


What data is expected?

Data, measured at the water source, on the quality of water is essential for both the delivery of services and the prevention of diseases. The Index either looks at the quality of designated drinking water sources, or of environmental water sources (if drinking water data is not available). See our methodology for more information. In order to satisfy the minimum requirements for this category, data should be available on level of the following chemicals by water source.

  • Fecal coliform
  • Arsenic
  • Fluoride levels
  • Nitrates
  • Total Dissolved Solids
  • Data per water source
  • Available for entire country

How open is the data?

Data Usability Beta

The submitter assessed the usability of the data as follows (3 - little to no effort needed, 1 - extensive effort needed): 2

Data format


All answers

Question Answer Comment
Openly licenced Yes
Downloadable at once Yes
Up-to-date No
Publicly available Yes
Available free of charge Yes
In an open and machine-readable format HTML, TXT, XLS
findable 4
findable_steps I googled for the data and found the data in the first search result. But I can get new data only in Japanese.
licence_url http://www.env.go.jp/mail.html I am sorry that this license is only in Japanese.
Collected by government Yes
usability 2
collector_name Ministry of Environment
characteristics Fecal coliform, Arsenic, Fluoride levels, Nitrates, Total Dissolved Solids, Available for entire country
location http://www.data.go.jp/data/en/organization/org_2000?q=% - Japanese site, http://www.env.go.jp/en/water/index.html - English site, http://www.env.go.jp/doc/toukei/contents/index.html#5sh - Japanese site


There isn't a lot of water quality data but reports and references to water quality of environmental sources. Drinking water is decentralized and there doesn't seem to be a strong central management of water quality.

Reviewer comments

Your submission is valid. Thank you very much for contributing to the Global Open Data Index.

Meta data

Date the data became available   Unknown
Format of data   Unknown
Reviewer   Nisha Thompson
Submitters   Kentaro Hatori
Last modified   Mon Dec 05 2016 13:02:16 GMT+0000 (UTC)