Property, plant and equipment and construction in progress (Tables)

12 Months Ended

Dec. 31, 2019

Property, plant and equipment and construction in progress

Schedule of Property, plant and equipment and construction in progress

	December 31,
	2019		2018
Land	$	3,566,537	$	3,435,361
Buildings		23,176,106		19,829,575
Plant and equipment		64,840,636		61,777,836
Distribution system		36,538,614		36,057,078
Office furniture, fixtures and equipment		3,061,315		3,635,184
Vehicles		1,582,053		1,431,719
Leasehold improvements		272,092		244,221
Lab equipment		14,958		27,795
		133,052,311		126,438,769
Less accumulated depreciation		71,803,332		67,557,951
Property, plant and equipment, net	$	61,248,979	$	58,880,818
Construction in progress	$	1,335,597	$	6,015,043