Yishun Groundwater Test Report

Unit: mg/L (pH value is dimensionless)

Sampling position (sampling time)	Sample serial number	Character description	Test items	Test results
groundwater(8:51)	191214A202	Colorless and transparent	pH value	7.06
			Permanganate Index	1.7
			Nitrate Nitrogen	0.235
			chloride	0.20
			Ammonia	0.059
			copper	<0.05
			Escherichia coli	<20

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