Del. Code tit. 16 § 1416
Any holder of revenue bonds issued by an authority under this chapter or any of the coupons appertaining thereto and the trustee under any trust agreement, except to the extent the rights herein given may be restricted by the resolution or trust agreement providing for the issuance of such bonds, may either at law or in equity, by suit, mandamus or other proceeding protect and enforce any and all rights under the laws of this State or granted hereunder or under such resolution or trust agreement, and may enforce and compel the performance of all duties required by this chapter or by such resolution or trust agreement to be performed by the authority or by an officer thereof, including the fixing, charging and collecting of rates, fees and charges for the use of or for the services furnished by any project.
16 Del. C. § 1416