Table 1. Existing (LAWA-AO 2007, unpublished working paper) and our new, suggested hydrochemical water-quality thresholds and objectives for the Oder (Odra) river.

Total-P PO4-P Total-N NH4-N Total-P Total-N
  (average) (average) (average) (average) load load
(mg l-1) (mg l-1) (mg l-1) (mg l-1) (t a-1) (t a-1)
Existing 0.1 0.07 0.3  
Suggested 0.1 0.07 1.5 0.3 1700 25,000