Major Aquifers
- Pecos Valley
- Seymour
- Gulf Coast
- Carrizo-Wilcox
- Hueco-Mesilla Bolsons
- Ogallala
- Edwards-Trinity (Plateau)
- Edwards (Balcones Fault Zone)
- Trinity
As of March 5, 2026 at 3:00 PM CDT: Texas communities are being targeted in a phishing campaign with emails posing as TWDB.