Surface Water Monitoring Data

Sampling Data Definition

The TCEQ monitors the quality of surface water to evaluate physical, chemical, and biological characteristics of aquatic systems with reference to human health concerns, ecological condition, and designated uses. Data provide a basis for effective policies that promote the protection, restoration, and wise use of surface water in Texas.

TCEQ Sampling Data Query, Surface Water Quality Monitoring

Access Water Quality Data

Use our Water Resources Information Map (WRIM) to locate Regional Monitoring Stations and access Water Quality Data.

Download TCEQ Quality Assured Datasets

Datasets on this page contain TCEQ Quality Assured ZIP data files for the four assessment basins within the H-GAC Region. Data is in MS Access 2007 format and has been zipped.

Database and table field descriptions

Surface Water Monitoring Data by Basin

H-GAC is in the process of updating this data and will update the chart and links below when it becomes available. In the meantime, for surface water quality information, please see TCEQ Sampling Data Query, Surface Water Quality Monitoring.

Basin Code Date Range Updated
All H-GAC Region Data   09/25/1968 - 07/31/2019 01/29/2020
Brazos-Colorado Coastal Basin [13] 09/25/1968 - 10/31/2019 08/12/2020
Trinity-San Jacinto Coastal Basin [9] 09/25/1968 - 01/09/2020 08/12/2020
Bays and Estuaries [24] 04/17/1969 - 03/11/2020 08/12/2020
San Jacinto River Basin [10] 09/26/1968 - 01/15/2020 08/12/2020
Gulf of Mexico [25] 05/21/1969 - 02/11/2020 08/12/2020
San Jacinto/Brazos Coastal Basin [11] 05/29/1969 - 01/09/2020 08/12/2020

Surface Water Monitoring Data by Organization

Organization Code Date Range Updated
Galveston County Health District [GC]- inactive - 01/06/1999 - 08/21/2003 02/03/2014
City of Pearland [PL] 02/25/2004 - 04/23/2008 02/03/2014
Harris County Pollution Control [HC] 06/24/1999 - 05/23/2019 01/29/2020
City of Houston Bureau of Pollution Control and Prevention [HH] 03/01/1999 - 05/02/2019 01/29/2020
San Jacinto River Authority [SJRA] 05/04/1999 - 09/13/2017 01/29/2020
City of Houston Public Works & Engineering and Harris County Flood Control District [HP] 01/28/1999 - 08/27/2013 01/28/2015
Texas Commission on Environmental Quality [FO] 09/25/1968 - 03/11/2020 08/12/2020
City of Houston Water Quality Control [HW] 01/12/2000 - 05/23/2019 01/29/2020
University of Houston Clear Lake, EIH [UI] 02/02/2002 - 04/25/2019 01/29/2020
Houston-Galveston Area Council [HG] 10/01/2007 - 05/16/2019 01/29/2020
US Geological Survey [GS] 04/22/1996 - 06/08/2015 01/29/2020
Texas Research Institute for Environmental Studies [TF] 12/20/2016 - 04/15/2019 01/29/2020