Faecal bacteria concentration in the River Wharfe from 2019 to 2021

Samples were collected in sterile bottles by trained volunteers, kept in cool bags during transport, delivered to an ALS Ltd collection point in Wakefield and thence to ALS Ltd, an accredited laboratory, in Coventry for analysis. Samples were analysed using standard methods within 24 hours of collection. Data were quality controlled by ALS before release. All data collected and analysed in this way have been collated and included in this data-set.