Water Pollution and Water Quality Assessment of Major Transboundary Rivers from Banat (Romania)

Table 2

Water quality status and WQI values at sampling stations from the Timiş River.

Water quality parameters; (unit)	Water sampling station
	Sadova Veche			Potoc			Lugoj
	Max.	Min.	Mean	Max.	Min.	Mean	Max.	Min.	Mean
DO (%)	125.9	56.1	84.5	128	57.7	85.7	163.8	54.1	98.1
pH (U pH)	7.9	7.1	7.5	7.9	7.2	7.6	9	6.8	7.6
BOD5 (mg O2/L)	3	1.2	1.9	3	1.1	1.9	5.8	1.2	2.8
Temperature (°C)	17.3	1	7.9	17	1.9	8.6	24.5	1.5	12.9
Total P (mg P/L)	0.075	0.032	0.050	0.106	0.026	0.052	0.298	0.028	0.106
N-NO2^− (mg N/L)	0.021	0.004	0.010	0.037	0.008	0.017	0.041	0.004	0.016
Turbidity (mg/L)	37.2	18.7	26.1	41.4	17.9	27.1	198.3	4.6	37.5
Overall WQI	79	83	86	78	84	86	58	81	83
Class	II	II	II	II	II	II	III	II	II
Water quality status	Good	Good	Good	Good	Good	Good	Medium	Good	Good
Water quality concern	Marginal concern	Lowest concern		Marginal concern	Lowest concern		Marginal concern	Lowest concern

Source. Data processed by the Banat Water Basin Administration (ABAB) Archives, Timişoara.