Table 2.

The chemical characteristics of the sampled water.

Sample	unit	DWP	TLU	TLM	DH-GAP01	DH-GAP04.up	DH-GAP04.mid	DH-GAP04.low	ICE	SGR	MWR	ISR	ITL
pH (field)		8.4	8.3	8.4	8.6	8.5	8.7	8.2	6.3∗	8.1	7.5	7.4	6.9
Temperature (field)	°C	6.7	7.4	6.4	7.0	11.3	10.5	10.6	–	0.4	0.4	6.8	3.4
Conductivity (field)	mS/cm	0.18	0.19	0.19	0.82	2.68	2.66	3.71	0.00∗	0.00	0.02	0.19	0.17
Gran titration, HCl consumption	mmol/L	1.5	1.6	1.6	n.a.	0.21	0.23	0.31	<0.03	<0.03	0.09	0.07	0.41
NPOC	mg/L	16	7.0	7.0	n.a.	4.6	4.0	0.8	6.9	<0.3	0.5	0.7	21
DIC	mg/L	16	17	17	n.a.	2.2	2.3	3.2	0.3	<0.3	1.1	0.9	4.8
Charge balance DIC	%	7.06	7.02	7.20	3.73	-0.39	-1.15	-1.14	-10.02	100.00	12.53	11.74	6.48
Charge balance HCO3	%	2.17	1.86	2.02	3.73	-0.44	-1.21	-1.19	1.90	-31.11	13.04	13.44	6.12
Nitrogen total	mg/L	1.1	0.49	0.50	n.a.	0.50	0.27	0.053	0.042	0.052	0.30	0.34	1.1
Nitrate	mg/L	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4
Iron	mg/L	0.11	0.009	0.020	0.027	0.024	0.018	0.056	0.064	0.017	0.15	0.15	0.24
Sulfur total	mg/L	2.1	1.3	1.3	120	460	440	660	<0.3	<0.3	0.72	0.79	14
Sulfate	mg/L	6.0	3.5	3.5	370	1410	1370	1990	<0.1	<0.1	2.1	2.3	41
TDS	mg/L	144	148	148	568	2195	2147	3123	2	1	13	12	108
Aluminum	μg/L	6	2	8	10	27	9	3	26	14	150	150	97
Bicarbonate	mg/L	92	98	98	n.a.	13	14	19	1.2	0.6	5.5	4.3	25
Bromid, Br	mg/L	<0.1	<0.1	<0.1	0.2	1.2	1.3	2.1	<0.1	<0.1	0.3	<0.1	<0.1
Fluorid, F	mg/L	0.2	0.3	0.3	0.6	0.2	0.2	0.1	<0.1	<0.1	<0.1	<0.1	0.1
Potassium	mg/L	5.2	6.2	6.2	2.0	4.1	6.7	5.5	<0.1	<0.1	0.4	0.4	1.4
Calsium	mg/L	14	15	15	99	370	330	430	<0.2	<0.2	1.9	1.7	14
Chloride,	mg/L	8.5	8.6	8.5	7.7	100	110	170	<0.2	<0.2	<0.2	0.3	4.6
Magnesium	mg/L	10	9.9	9.9	3.3	25	31	60	0.01	0.03	0.38	0.40	7.5
Sodium,	mg/L	7.0	6.6	6.6	74	260	270	430	0.3	<0.2	0.4	0.3	4.7
SiO2	mg/L	0.70	0.45	0.46	8.1	5.4	6.4	7.9	0.09	0.29	1.9	1.6	8.8
Strontium	mg/L	0.05	0.05	0.05	2.6	6.5	6.3	8.2	0.01	0.01	0.02	0.02	0.05
Sodium fluorescein	mg/L	n.d.	n.d.	n.d.	<1	76	67	2.6	n.d.	n.d.	n.d.	n.d.	n.d.

^∗ measured in the laboratory, n.a., not available; n.d., not determined.