eau potable		eau usée		total
		HT	%	HT	%	HT	%
en juin	1979
	1980
	1981
	1982
	1983
	1984
	1985
	1986
	1987
	1988
	1989	4,4800	1,0000	3,5600	1,0000	8,6250	1,0000
	1990	4,9337	1,1013	4,1948	1,1783	9,8635	1,1435942
	1991	5,1647	1,1528	4,4055	1,2375	10,3552	1,2006029
	1992	5,2826	1,1792	4,6602	1,3090	11,5178	1,3353971
	1993	5,4727	1,2216	4,8537	1,3634	12,0214	1,39378551
	1994	5,6002	1,2500	4,9514	1,3908	12,2633	1,42183188
	1995	5,7345	1,2800	5,0629	1,4222	12,6324	1,46462609
	1996	5,9334	1,3244	5,3059	1,4904	13,1968	1,53006377
	1997	6,0683	1,3545	5,6149	1,5772	13,7432	1,59341449
	1998	6,1863	1,3809	5,9157	1,6617	14,2320	1,65008696
	1999	6,2479	1,3946	5,9635	1,6751	14,3414	1,66277101
	2000	6,4061	1,4299	6,0959	1,7123	14,6420	1,69762319
	2001	6,4823	1,4469	6,0959	1,7123	14,9903	1,7380058