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 City of Round Rock Environmental Services Laboratory
About the Laboratory

The City of Round Rock Environmental Services Laboratory has been providing bacteriological testing services to water utilities and the public since 1996.  The laboratory's team of professionals consists of degreed and licensed professionals in a variety of scientific disciplines including biochemistry, marine biology, and freshwater biology.



The Environmental Services Laboratory is located on the west side of IH-35 between the cities of Round Rock and Georgetown (download a map and directions).

Hours of Operation

The Environmental Services Laboratory accepts samples Monday through Thursday from 8 a.m. to 4 p.m.  The laboratory is closed on City holidays and on the day preceding the holiday (2014 Holiday Schedule).

Samples are accepted outside regular business hours of operation at the laboratory's discretion.  Samples that are approved for analysis outside regular hours of operation will incur 2.0x the regular fee.  Availability of results may vary.

Please call the laboratory at (512) 218-5561 if you need to submit samples outside of the laboratory's regular hours of operation.

Fee Schedule

 Test Type Test Run Time Cost
 Total Coliform Presence/Absence 24 hours* $15 per sample
 Total Coliform Presence/Absence 18 hours** $20 per sample
 E.coli enumeration (colony count) 24 hours* $20 per sample
 E.coli enumeration (colony count) 18 hours** $25 per sample
 Field Chlorine Instrument Check  $10 per instrument
*Results for 24-hour tests are available on the day after drop-off around 4 p.m.
**Results for 18-hour tests are available on the day after drop-off around 10 a.m.

Prices are subject to change without prior notice.








For more information, please contact:
City of Round Rock Environmental Services Laboratory
Phone:  (512) 218-5561
Fax:  (512) 341-3316
E-mail:  Water_Lab_Question

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City of Round Rock | 221 East Main Street, Round Rock, Texas 78664 | Phone: (512) 218-5400
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