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Cover
Jun. 13, 2024
Cover [Abstract]  
Entity Registrant Name 374WATER INC.
Entity Central Index Key 0000933972
Document Type 8-K
Amendment Flag false
Current Fiscal Year End Date --12-31
Entity Emerging Growth Company false
Document Period End Date Jun. 13, 2024
Entity File Number 001-41420
Entity Incorporation State Country Code DE
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 State Or Province NC
Entity Address Postal Zip Code 27701
City Area Code 440
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Local Phone Number 609-9677
Security 12b Title Common Stock, par value $0.001
Trading Symbol SCWO
Security Exchange Name NASDAQ