Number	Source of water sample	Elevation (m)	K⁺ + Na⁺	Ca²⁺	Mg²⁺	Cl⁻	${SO}_{4}^{2 -}$	${HCO}_{3}^{-}$	TDS	Total hardness	pH	Turbidity
Number	Source of water sample	Elevation (m)	(mg/L)								pH	Turbidity
H1	No. 10 observation hole	−593	73.67	173.95	26.37	61.68	219.98	413.82	982.88	542.54	7.15	<1
H2	No. 13 observation hole	−718	56.15	70.14	45.44	59.56	86.93	333.17	667.16	362.03	7.45	<1
H3	No. 15 observation hole	−880	53.36	74.95	43.98	63.46	86.93	341.71	683.30	368.20	7.10	<1
D1	roof water of working face	−610	771.52	4.81	1.46	72.32	109.99	1805.58	2777.83	18.30	8.00	<1
K1	The goaf water	−545	273.94	38.68	32.20	59.56	202.69	550.4	1,156.65	229.42	7.95	<1
C1	Central water sump	−593	197.88	89.38	26.37	67.36	202.69	474.13	839.77	331.52	7.80	20
C2	Ji 2 water sump	−880	92.46	82.16	46.90	79.05	179.63	366.73	663.56	398.07	7.80	/
C3	Ji 4 water sump	−800	128.80	45.89	26.37	56.01	127.28	355.75	562.22	223.00	7.75	/