Category
Group
Subgroup
NameYears of accessibilityData accessibility levelDescription
 biochemical oxygen demand 2003-2016NTS-5-
 chemical oxygen demand 2003-2016NTS-5-
 total suspension 2003-2016NTS-5-
 sum of chlorides and sulphates ions 2003-2016NTS-5-
 volatile phenols 2003-2016NTS-5-
 total nitrogen 2005-2016NTS-5-
 total phosphorus 2005-2016NTS-5-