First: thank you for using a licensed irrigator! They have gone through a licensing course from a TCEQ provider and maintain continuing education that teaches the importance of water conservation and safeguarding water quality. You can check irrigation license status and learn more about irrigation licensing here:
https://www.tceq.texas.gov/licensing/licenses/lilic. I have a list of individuals and companies that I know have Licensed Irrigators/Technicians. Not "waterchick's recommended people" just a (not exhaustive) list of people who hold a license. I can email it to you. j nations at cstx dot gov.