According to the researches, the water level in the Goryn River (above the Baltic Sea level) fluctuated within a month from 192.84 m to 192.69 m in January, 2019 (the minimum value is 192.67 m; the maximum value is 192.89 m; the average is 192.74 m):

In January 2019, the temperature of water in the Goryn River varied from 1.9°С to 0.5°С during the month (minimum value is 0.2; maximum value is 1.9; average is 0.62):

In January 2019, the water flow in the Goryn River changed from 10.4 to 7.1 m³/s during the month  (the minimum value was 6.44; the maximum value was 11.5; the average was 8.27):

The total flow of the Goryn River amounted to 22.155 million m³ (January 2018 - 26.587 million m³) in January 2019.

The water level of the reservoir-cooler (at the design level of 203.0 m above the Baltic Sea level)  varied from 201.88 to 201.91 meters during the month in January 2019 (the minimum value is 201.87, the maximum value is 201.91, the average - 201.89):

The mirror area of the cooling pond was 18,113 km², the volume of water was 97.240 million m³ at the end of the month.

In January 2019, the temperature of the water in the cooling pond varied from 6.9°C to 4.5°C during the month (minimum value is 1.3, maximum value is 7.5, average - 3.82):

The chemical analysis data of water quality in the reservoir-cooler (the pump station of auxiliary water) and in the Goryn River (near the Old Mill, Netishyn) were as follows in January:

Indicator	Cooling pond	Goryn River	MAC*
Solidity general, mg-equv/dm3	5,1	6,65	-
Calcium (Са2+), mg/dm3	72,1	113,2	180
Magnesium (Mg2+), mg/dm3	18,2	12,15	40
Sodium (Na+), mg/dm3	85,8	35,5	120
Potassium (K+), mg/dm3	11,8	6,1	50
Bicarbonates (HCO3-), mg/dm3	311,1	372,1	-
Carbonates (CO32-), mg/dm3	3,0	0	-
Dry residues, mg/dm3	520	461	1000
Sulfates (SO42-), mg/dm3	124,0	78,0	100
Ammonium, (NH4+), mg/dm3	0,15	0,55	0,5
Nitrates (NO3-), mg/dm3	1,78	8,13	40
Nitrites (NO2-), mg/dm3	0,032	0,053	0,08
Phosphates (PO43-), mg/dm3	0,82	0,26	0,25
Oil products, mg/dm3	0,022	0,010	0,05
Synthetic surfactants, mg/dm3	0,044	0,061	0,1
Iron, mg/dm3	<0,10	0,22	0,1
Permanganate oxidability, mgО/dm3	5,76	3,20	-
Dissolved oxide (O2), mg/dm3	12,20	12,49	4

Notes: Standard MAC (maximum allowable concentration) is applied for water objects of industrial fishing (the Goryn River pertains to them) - «Rules of superficial water protection».

According to the data of chemical analysis results mentioned above, the water quality of the reservoir-cooler in December was better than the water quality in the Goryn River regarding some coefficients.

The main water balance components of Khmelnitsky NPP cooling pond are listed in the table below:

Component    January 2019    January 2018
WATER INPUT
- Outflows from the Hnylyi Rih River, mln. m3    1,279    1,584
- Horyn River water pumped to KhhNPP cooling pond by the makeup water pumping station, mln. m3    N/A    1,000
- Return water from the drainage line to KhhNPP cooling pond pumped by the leakage water pumping station, mln. m3    1,644    1,753
- Treated effluent water, mln. m3    0,300    0,303
WATER OUTPUT
- Return water to the Viliia River (Horyn River basin), mln.m3    N/A    N/A

Over January, emission of pollutants into the atmosphere was in compliance with the limits established for stationary pollution sources. Thus, the pollutant emission standards were not exceeded. The generalized information on pollutants emission is given below in the table.

Emission    January 2019    January 2018
Pollutants (without СО2), t    2,606    41,084
СО2, t    0    2355,303

The emission of pollutants in January 2018 was significantly higher as compared to January 2019 due to simultaneous shutdown of both KhNPP Units and operation of the start-up boiler (pollutants resulted from the black oil fuel burning).