Seguin and Schertz receive their primary water supply from the Schertz/Seguin Local Government Corporation, a jointly owned wholesale supplier using the Carrizo Aquifer. The cities own SSLGC equally, according to Seguin’s SSLGC page. It is a separate corporation, rather than a Seguin city committee.
That distinction helps explain two different parts of water service. SSLGC develops and supplies water in bulk; the city or utility serving a customer communicates the rules that apply to that customer. The October 2026 Schertz notice shows the connection: a problem at SSLGC affected supply, while Schertz announced restrictions for its residents.
From the source record
The Schertz/Seguin Local Government Corporation (SSLGC) was created as a wholesale water supply system.City of Seguin ↗
Who supplies whom
SSLGC and Canyon Regional Water Authority, or CRWA, have different published customer lists. Seguin identifies SSLGC’s two owner cities and several wholesale customers. CRWA describes its members as water corporations, districts or municipalities that purchase water through the authority. Appearing on either list does not, by itself, identify the utility for an individual address or establish that an entity buys all its water from that supplier.
| Entity | Role | Owner or member information | Named customers or purchasers |
|---|---|---|---|
| SSLGC | Wholesale water supplier using the Carrizo Aquifer | Owned equally by Seguin and Schertz | Seguin and Schertz; wholesale contracts include Selma, Universal City, Springs |
| CRWA | Water authority selling to listed entities | Publishes a member-entity list | Listed members include Cibolo, Marion, Green Valley SUD, East Central SUD and |
| City of Schertz | Announces rules for its water customers | Equal owner of SSLGC | Schertz customers covered by its October 25 restrictions |
The SSLGC and CRWA lists both name Springs Hill. The lists do not establish each member’s entire water supply or an address-level service boundary.