| Satisfactory | Acceptable | Poor | |
| BASQUE COUNTRY | |||
| Nº of supply areas 2007 | 274 | 35 | 157 |
| Inhabitants 2007 | 2.036.117 | 48.381 | 41.286 |
| Percentage of population affected | |||
| 2007 | 95,8 | 2,3 | 1,9 |
| 2006 | 92,8 | 3,6 | 3,6 |
| 2005 | 92,9 | 3,1 | 4,0 |
| ÁLAVA | |||
| Nº of supply areas 2007 | 85 | 10 | 93 |
| Inhabitants 2007 | 265.490 | 7.854 | 10.125 |
| Percentage of population affected | |||
| 2007 | 93,7 | 2,8 | 3,6 |
| 2006 | 94,0 | 1,7 | 5,3 |
| 2005 | 97,0 | 0,5 | 2,5 |
| BIZKAIA | |||
| Nº of supply areas 2007 | 120 | 14 | 48 |
| Inhabitants 2007 | 1.104.531 | 14.408 | 17.358 |
| Percentage of population affected | |||
| 2007 | 97,2 | 1,3 | 1,5 |
| 2006 | 94,2 | 4,1 | 1,7 |
| 2005 | 96,3 | 1,5 | 2,2 |
| GIPUZKOA | |||
| Nº of supply areas 2007 | 69 | 11 | 16 |
| Inhabitants 2007 | 666.096 | 26.119 | 13.803 |
| Percentage of population affected | |||
| 2007 | 94,3 | 3,7 | 2,0 |
| 2006 | 89,9 | 4,1 | 6,1 |
| 2005 | 85,5 | 6,8 | 7,6 |
(1)Satisfactory: Water classed as FIT FOR CONSUMPTION, in at least 95% of analyses
Acceptable: Water classed as NOT FIT in between 5 and 10% of analyses
Poor: Water classed as NOT FIT in more than 10% of analyses
Date June 17, 2010
Source: Department of Health and Consumption. Report on Public Health. Statistics on the quality of water for public consumption.
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