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§ III Exchange · Regulator · watershed authority

Edwards Aquifer Authority

Manages the Edwards Aquifer — drought rules, well permits, J-17 data.

LocationSan Antonio · Bexar + 7 counties
Phone(210) 222-2204

About

Why this source matters.

The Edwards Aquifer Authority is the regulatory body governing the most important groundwater resource in South Central Texas. They set drought stages, monitor the J-17 reference well (the number you see in our hero strip), control well permits, and run public education programs. Any property in the EAA service area touches their rules.

Reading by Noon

Their drought-stage page is what we cite in every Assess that involves outdoor watering. Bookmark it.

How to use them

EAA's website is the source of truth for current drought stage and watering schedules. If you're drilling a new well or modifying an existing one in their jurisdiction, you cannot avoid them. Their data is free, real-time, and the basis for all serious Hill Country water planning. Their public education team will answer specific landowner questions if you call.

Specialties

What they're known for.

Products & services

Pricing

Free public information.

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