v3.25.4
Cover
Mar. 02, 2026
Cover [Abstract]  
Entity Registrant Name 374WATER INC.
Entity Central Index Key 0000933972
Document Type 8-K
Amendment Flag false
Entity Emerging Growth Company false
Document Period End Date Mar. 02, 2026
Entity File Number 001-27866
Entity Incorporation State Country Code DE
Entity Tax Identification Number 88-0271109
Entity Address Address Line 1 100 Southcenter Court
Entity Address Address Line 2 Suite 200
Entity Address City Or Town Morrisville
Entity Address State Or Province NC
Entity Address Postal Zip Code 27560
City Area Code 440
Local Phone Number 601-9677
Security 12b Title Common Stock, par value $0.0001
Trading Symbol SCWO
Security Exchange Name NASDAQ
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false