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Property, plant and equipment and construction in progress (Tables)
12 Months Ended
Dec. 31, 2021
Property, plant and equipment and construction in progress  
Schedule of Property, plant and equipment and construction in progress

December 31, 

    

2021

    

2020

Land

$

3,316,537

$

3,566,537

Buildings

 

23,255,925

 

23,250,843

Plant and equipment

 

64,324,377

 

63,734,860

Distribution system

 

39,780,272

 

39,149,063

Office furniture, fixtures and equipment

 

3,051,814

 

3,083,811

Vehicles

 

2,079,874

 

1,999,463

Leasehold improvements

 

287,980

 

274,230

Lab equipment

 

12,456

 

12,456

 

136,109,235

 

135,071,263

Less accumulated depreciation

 

83,162,696

 

77,383,279

Property, plant and equipment, net

$

52,946,539

$

57,687,984

Construction in progress

$

710,863

$

440,384