Table 2.

Other physicochemical parameters in three drinking water sources of Yancheng City.

Drinking Water Sources		pH	SO42−	Cl−	TDS	TAlk	Na+	K+
Tongyu River	Max.	8.40	81	194	594	218	85	12
	Min.	7.20	23	59	269	117	44	1.2
	Mean	7.57	49	114	411	167	65	6.9
Mangshe River	Max.	8.72	64	116	523	187	90	7.4
	Min.	7.28	25	35	122	123	34	1.6
	Mean	7.65	43	69	380	158	60	5.7
Yanlong Lake	Max.	8.54	61	97	512	183	89	9
	Min.	7.42	24	46	231	116	34	1.6
	Mean	8.12	44	71	369	156	60	6.4

Note: Units for all parameters are mg L⁻¹ except pH.