Water

Eutrophication

Transboundary water pollution
Indicators
Daugava
Lielupe
Venta
International co-operation 

Drinking water quality

Water resources

Mean yearly total nitrogen concentrations in the Mēmele (0.5 km below Skaistkalne) and Mūsa Rivers (at the border of Lithuania), 1998-2000
Source: Latvian Hydrometeorological Agency