	July 2018				September 2018				December 2018				June 2019
PHYSICAL PARAMETERS	Mini	Maxi	Mean	SD	Min	Max	Mean	SD	Min	Max	Mean	SD	Min	Max	Mean	SD	Standards
pH	6.50	7.48	7.07	0.51	4.90	5.65	5.38	0.41	6.31	7.17	6.74	0.43	6.74	6.86	6.82	0.07	6.5 - 8.4
T˚C	25.26	26.10	25.66	0.42	26.80	28.06	27.62	0.65	26.80	27.80	27.46	0.51	25.00	26.00	25.60	1.04	35
Sal (‰)	0.05	0.29	0.13	0.14	0.00	0.01	0.00	0.01	2.40	5.20	3.33	1.62	0.01	0.02	0.01	0.00	3.5
EC (µs/cm)	114.00	594.00	278.00	273.70	80.00	170.00	123.30	45.09	397.00	839.00	546.30	253.50	129.20	155.60	142.10	13.21	3000
TDS (mg/L)	57.00	297.00	139.00	136.80	40.00	80.00	6.67	23.09	197.00	427.00	274.00	132.50	134.00	155.00	146.00	10.81	2000
CHEMICAL PARAMETERS	Min	Max	Mean	SD	Min	Max	Mean	SD	Min	Max	Mean	SD	Min	Max	Mean	SD	Standards
${SO}_{4}^{2 -}$ (mg/L)	16.40	6.20	31.37	24.98	6.00	10.10	8.03	2.05	13.00	19.00	16.50	3.12	0.65	1.25	0.87	3.12	250
${NO}_{3}^{-}$ (mg/L)	4.50	118.00	42.73	65.19	4.40	5.80	5.33	0.81	3.60	3.71	3.65	0.06	0.4	1.20	0.77	0.06	30
${NO}_{2}^{-}$ (mg/L)	0.00	0.01	0.01	0.00	0.00	0.00	0.00	0.00	0.20	0.21	0.20	0.01	0.00	0.00	0.00	0.01	3
${NH}_{4}^{+}$ (mg/L)	0.07	0.08	0.08	0.01	0.01	0.03	0.02	0.01	1.01	1.15	1.07	0.07	0.81	2.60	1.57	0.07	0.5
${PO}_{4}^{3 -}$ (mg/L)	0.03	0.06	0.05	0.02	0.22	0.35	0.31	0.08	0.43	0.46	0.44	0.02	0.11	0.16	0.13	0.02	0.2
Ca²⁺ (mg/L)	2.50	3.00	2.70	0.27	6.50	8.00	7.17	0.76	13.90	15.80	14.60	1.04	15.40	17.90	16.80	1.04	120
K⁺ (mg/L)	7.20	16.40	13.10	5.09	0.84	1.40	1.12	0.28	2.90	4.20	3.70	0.70	5.00	5.80	5.50	0.70	5
Mg²⁺ (mg/L)	1.40	1.50	1.47	0.05	0.00	0.00	0.00	0.00	0.43	1.23	0.87	0.25	0.26	2.58	1.22	0.25	25
Cl⁻ (mg/L)	8.40	30.50	15.90	12.62	3.00	5.00	4.00	1.00	8.90	18.00	11.97	5.23	2.90	4.00	3.40	5.23	140
Na⁺ (mg/L)	2.20	9.80	4.77	4.36	1.66	2.76	2.21	0.55	2.40	8.00	4.30	3.21	0.53	0.60	0.56	3.21	30