Table 13.

Summary of water test results of original and new designs.

Water tests	2015 results			2018 results						Difference %
	Original (1)			Commercial WaterBoxx (2)			Proposed Tire-waterbox (3)			∆1,2	∆1,3	∆2,3
	min	min	max	average	max	average	min	max	average
Ammonia (mg/L)	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.01	0.0	0.0	0.0
Alkalinity (total)	139.04	139.04	139.04	106.58	106.58	106.58	130.5	163.13	147.90	−23.3	6.4	29.7
Nitrite/nitrate (NO2/NO3 mg/kg)	47.30	47.30	47.30	0.45	0.45	0.45	4.52	17.90	9.33	−99.0	−80.3	18.8
Silicate (Si mg/kg)	11.90	11.90	11.90	16.50	16.50	16.50	27.50	34.10	30.60	38.7	157.1	118.5
TPH in water (ug/L)	< 0.40	< 0.40	< 0.40	1.52	1.52	1.52	0.60	1.27	0.88	280.0	120.0	−160.0
pH	8.05	8.17	8.11	7.49	7.49	7.49	7.96	8.02	8.00	−7.6	−1.4	6.3