Exhibit 99.10 JOINT FILING AGREEMENT The undersigned agree that this Schedule 13D filing herewith relating to securities of WorldWater Corp. is filed jointly on behalf of each of the undersigned pursuant to Rule 13d-1(k). Dated: March 19, 2004Joint Filing Agreement • March 22nd, 2004 • Toledano Udi • Services-engineering services
Contract Type FiledMarch 22nd, 2004 Company IndustryThe undersigned agree that this Schedule 13D filing herewith relating to securities of WorldWater Corp. is filed jointly on behalf of each of the undersigned pursuant to Rule 13d-1(k).