Ministry of Internal Affairs and Communications monitors the water charge monthly.
The data below show the changes in the price indexes of water charge between 1970 and 2014, if the price in 2010 is taken as 100.
Year | Index (2010 = 100) | Price of 20 m3 water (yen) |
1970 | 20.8 | 493 |
1971 | 21.2 | 503 |
1972 | 22.0 | 522 |
1973 | 22.5 | 533 |
1974 | 23.5 | 557 |
1975 | 27.7 | 657 |
1976 | 37.6 | 891 |
1977 | 40.2 | 953 |
1978 | 42.9 | 1017 |
1979 | 46.4 | 1100 |
1980 | 48.5 | 1150 |
1981 | 53.4 | 1266 |
1982 | 61.1 | 1449 |
1983 | 62.7 | 1487 |
1984 | 66.5 | 1577 |
1985 | 69.0 | 1636 |
1986 | 70.3 | 1667 |
1987 | 71.0 | 1683 |
1988 | 72.2 | 1712 |
1989 | 74.1 | 1757 |
1990 | 75.0 | 1778 |
1991 | 75.6 | 1792 |
1992 | 76.8 | 1821 |
1993 | 79.3 | 1880 |
1994 | 82.5 | 1956 |
1995 | 84.6 | 2006 |
1996 | 87.0 | 2063 |
1997 | 91.2 | 2162 |
1998 | 93.7 | 2222 |
1999 | 94.6 | 2243 |
2000 | 95.5 | 2264 |
2001 | 96.8 | 2295 |
2002 | 98.0 | 2324 |
2003 | 98.2 | 2328 |
2004 | 98.6 | 2338 |
2005 | 98.7 | 2340 |
2006 | 99.5 | 2359 |
2007 | 99.4 | 2357 |
2008 | 99.4 | 2357 |
2009 | 99.8 | 2366 |
2010 | 100.0 | 2371 |
2011 | 99.9 | 2369 |
2012 | 100.0 | 2371 |
2013 | 100.3 | 2378 |
2014 | 102.5 | 2430 |
The next graph shows the changes in one month water charge (20m3) from 1970 to 2014.
Source is Statistics Bureau. 消費者物価指数 (CPI) 結果
www.stat.go.jp/data/cpi/historic.htm
www.e-stat.go.jp/SG1/estat/Csvdl.do?sinfid=000011288564
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