Weekly bacterial monitoring data from Eckington Bridge on the River Avon. Charts show E-Coli, Enterococci, and Coliform levels over time, with Environment Agency thresholds marked.
Bacteria are microscopic organisms found naturally in rivers. Coliform bacteria, including E. coli, are used as indicators of contamination from sources such as livestock or sewage. Results are from a professional lab — colonies grown on agar plates are counted to give the cfu (colony forming units) value.
Environment Agency ratings consider E. coli <500 cfu and Enterococci <200 cfu as excellent. These are historic measurements and should not be used to judge current water safety.
| Site | E-Coli | Enterococci | Coliforms |
|---|---|---|---|
| Eckington | - | - | - |
Sampled downstream of Eckington Bridge