Collectors
| Name | Catchment |
|---|---|
| Blaby District Council | Blaby (E07000129) |
| Blackburn with Darwen Council | Blackburn with Darwen (E06000008) |
| Blackpool Council | Blackpool (E06000009) |
| Bladel | Bladel (GM1728) |
| Blaenau Gwent County Borough Council | Blaenau Gwent (W06000019) |
| Blaricum | Blaricum (GM0376) |
| Blink GRR | Catchment of Blink GRR |
| Bloemendaal | Bloemendaal (GM0377) |
| Bodegraven-Reeuwijk | Bodegraven-Reeuwijk (GM1901) |
| Boekel | Boekel (GM0755) |
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