SAWS: Dental Offices
Aquifer Beaker

Edwards Aquifer

Aquifer Level 685.5'
12/10/18 - Official

The Edwards aquifer and its catchment area in the San Antonio region is about 8,000 square miles and includes all or part of 13 counties in south-central Texas.

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Year-Round Watering Hours

Watering with an irrigation system or sprinkler is allowed any day of the week before 11 a.m. or after 7 p.m.

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Aquifer Level 685.5 | Year-Round Watering Hours

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Dental Discharge Compliance

Dental Discharge Compliance

Dental offices that place or remove amalgam must operate and maintain an EPA compliant amalgam separator to prevent discharges of mercury into the public wastewater system.

A new federal law was enacted in the summer of 2017 requiring dental offices to:

  1. Use amalgam separators
  2. imagePerform ongoing maintenance and inspection of the amalgam separators
  3. Follow specific ADA-recommended Best Management Practices (BMPs) for collection and disposal of amalgam and for types of cleaners to use
  4. Submit a one-time compliance report.

More information about these requirements:

DISCLAIMER: Please consult the published rule and EPA’s Dental Effluent Guidelines for more information and specific details about the Dental Effluent Rule. The information in these official documents supersedes any information outlined in this summary.