Country
|
Chlorine
|
Chlorine Dioxide
|
Chloramines
|
Ozone
|
UV
|
Austria |
1 |
3 |
- |
3 |
3 |
Belgium (a) |
1 |
3 |
- |
3 |
3 |
Denmark |
- |
- |
- |
- |
- |
Finland |
1 |
3 |
3 |
3 |
3 |
France |
2 |
2 |
- |
2 |
- |
Germany |
1 |
1 |
- |
2 |
3 |
Great-Britain |
1 |
3 |
3 |
3 |
3 |
Greece |
1 |
- |
- |
- |
- |
Ireland |
1 |
- |
- |
3 |
- |
Italy |
1 |
1 |
- |
3 |
- |
Luxembourg |
- |
- |
- |
- |
- |
Holland (b) |
2 |
2 |
- |
1 |
3 |
Portugal |
1 |
- |
- |
- |
- |
Spain |
1 |
3 |
2 |
2 |
- |
Sweden |
1 |
3 |
2 |
- |
- |
|