Texas Water Code - WATER § 63.170. Application of Certain Sections

(1) improvements carried out and performed by the United States;

(2) calamities or emergencies which make it necessary to act at once to preserve the property of the district;

(3) unforeseen damage to district property, machinery, or equipment or necessary emergency repairs to them; or

(4) contracts for personal or professional services or work done by the district and paid for by the day as the work progresses.