| Year | Type | All Georgia | Black Sea basin (14) | Caspian Sea basin (18) |
|---|---|---|---|---|
| 2004 | Rivers - BOD | 1.901924 | 2.217158 | 1.656742 |
| 2005 | Rivers - BOD | 2.047415 | 2.493484 | 1.700472 |
| 2006 | Rivers - BOD | 1.76346 | 1.384001 | 2.058596 |
| 2007 | Rivers - BOD | 2.12246 | 2.234041 | 2.035675 |
| 2008 | Rivers - BOD | 2.106117 | 2.105666 | 2.106468 |
| 2009 | Rivers - BOD | 2.011321 | 1.983425 | 2.033019 |
| 2010 | Rivers - BOD | 1.831614 | 2.037713 | 1.671316 |
| 2011 | Rivers - BOD | 2.150249 | 2.102116 | 2.187686 |
| 2012 | Rivers - BOD | 1.845958 | 1.903869 | 1.800917 |
| 2013 | Rivers - BOD | 1.797684 | 1.913122 | 1.707898 |
| 2014 | Rivers - BOD | 1.658209 | 1.696222 | 1.628643 |
| 2015 | Rivers - BOD | 1.425596 | 1.222753 | 1.583364 |
| 2016 | Rivers - BOD | 1.61454 | 1.513604 | 1.693046 |
| 2017 | Rivers - BOD | 1.720213 | 1.580725 | 1.828704 |
| 2018 | Rivers - BOD | 1.7069 | 1.705379 | 1.708083 |
| 2004 | Rivers - Ammonium | 0.939949 | 0.778551 | 1.065481 |
| 2005 | Rivers - Ammonium | 0.836792 | 0.779043 | 0.881708 |
| 2006 | Rivers - Ammonium | 0.803104 | 0.669016 | 0.907395 |
| 2007 | Rivers - Ammonium | 0.813989 | 0.72621 | 0.882262 |
| 2008 | Rivers - Ammonium | 0.58349 | 0.727133 | 0.471769 |
| 2009 | Rivers - Ammonium | 0.735679 | 0.649097 | 0.803021 |
| 2010 | Rivers - Ammonium | 0.485578 | 0.878238 | 0.180176 |
| 2011 | Rivers - Ammonium | 0.49514 | 0.99816 | 0.103903 |
| 2012 | Rivers - Ammonium | 0.524716 | 1.041798 | 0.122542 |
| 2013 | Rivers - Ammonium | 0.570746 | 0.699348 | 0.470722 |
| 2014 | Rivers - Ammonium | 0.409662 | 0.460614 | 0.370033 |
| 2015 | Rivers - Ammonium | 0.311852 | 0.301036 | 0.320264 |
| 2016 | Rivers - Ammonium | 0.429379 | 0.531842 | 0.349686 |
| 2017 | Rivers - Ammonium | 0.423524 | 0.454369 | 0.399533 |
| 2018 | Rivers - Ammonium | 0.431499 | 0.541063 | 0.346283 |