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Summary of Significant Accounting Policies (Details 1) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Summary of Significant Accounting Policies
Beginning balance	$ 0	$ 0
Current period provision	191	0
Write-offs	0	0
Ending Balance	$ 191	$ 0

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- References

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- References

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Namespace Prefix:	scwo_
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- Definition

Amount of cash inflow from recovery of accounts receivable previously written off.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

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