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lab11265 W. Grand Avenue, Porterville    
Phone 559-782-7510

Certified by State Water Resources Control Board Environmental Laboratory Accreditation Program (ELAP) Certificate #1653.

The City of Porterville Laboratory provides analytical services to various City departments and surrounding communities for drinking water, wastewater, and industrial wastewater testing.
Analytical Services:

  • Bacteriological testing:
    • Total coliform and E-coli in drinking water.
    • Total coliform, fecal coliform, E-coli in source water.
  • Nitrate/Nitrite testing
  • General Minerals
  • Trace Metals
Laboratory Hours for receiving samples:

  • Bacteriological Samples
    • Monday – Thursday 8:00 am to 4:00 pm
  • All other samples
    • Monday – Thursday 8:00 am to 4:00 pm;
    • Friday 8:00 am to 12:00 Noon



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