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Cover
Nov. 01, 2022
Cover [Abstract]  
Entity Registrant Name 374WATER INC.
Entity Central Index Key 0000933972
Document Type 8-K
Amendment Flag false
Entity Emerging Growth Company true
Document Period End Date Nov. 01, 2022
Entity Ex Transition Period false
Entity File Number 000-27866
Entity Address State Or Province NC
Entity Tax Identification Number 88-0271109
Entity Address Address Line 1 701 W Main Street
Entity Address Address Line 2 Suite 410
Entity Address City Or Town Durham
Entity Address Postal Zip Code 27701
City Area Code 919
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Local Phone Number 888-8194
Security 12b Title Common Stock, par value $0.001
Trading Symbol SCWO
Security Exchange Name NASDAQ
Entity Incorporation State Country Code DE