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

Table 3

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

Water quality parameters (unit)	Water sampling station
	Hitiaș			Șag			Grăniceri
	Max.	Min.	Mean	Max.	Min.	Mean	Max.	Min.	Mean
DO (%)	130.9	40	79.1	147.7	51.2	89.3	144.7	47.4	86.7
pH (U pH)	7.7	6.8	7.3	7.7	7	7.4	8	7.2	7.6
BOD5 (mg O2/L)	10.8	1.3	4.2	4.8	1.1	2.4	6	1.6	3.7
Temperature (°C)	23.6	2.7	12.6	23.6	2.1	12.1	23.3	3.1	12.7
Total P (mg P/L)	0.437	0.042	0.145	0.263	0.041	0.123	0.434	0.058	0.171
N-NO2^− (mg N/L)	0.078	0.009	0.030	0.042	0.007	0.021	0.046	0.006	0.021
Turbidity (mg/L)	291.4	8.9	68	185.2	6.2	44.9	124.9	11.5	46.8
Overall WQI	66	76	79	66	81	83	62	79	81
Class	III	II	II	III	II	II	III	II	II
Water quality status	Medium	Good	Good	Medium	Good	Good	Medium	Good	Good
Water quality concern	Marginal concern			Marginal concern	Lowest concern		Marginal concern		Lowest concern

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