Subsequent events	3 Months Ended
Mar. 31, 2022
Subsequent events
Subsequent events	11. Subsequent events On May 10, 2022, the Company signed a definitive agreement with the WAC for its planned seawater reverse osmosis plant in George Town, Grand Cayman. The Company will design, construct and commission the plant over approximately the next 18 months and then sell the facility to the WAC. The Company will subsequently operate and maintain the plant and produce water for the WAC for the next 10 years after commissioning. The plant will produce up to 2.64 million gallons of potable water per day for the WAC using two independent reverse osmosis trains. The Company evaluated subsequent events through the time of the filing of this report on Form 10-Q. Other than as disclosed in these condensed consolidated financial statements, the Company is not aware of any significant events that occurred subsequent to the balance sheet date but prior to the filing of this report that would have a material impact on its condensed consolidated financial statements.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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