Water testing in San Luis Obispo County, CA

Lowest listed local program price: $52, other prices posted, County of San Luis Obispo Public Health Laboratory.

Well or city water

San Luis Obispo County Public Health Laboratory Water Testing

$52, other prices posted

  • Bacteria
  • E. coli

Pick up a sterile sample bottle at the County of San Luis Obispo Public Health Laboratory, 2191 Johnson Avenue, San Luis Obispo, collect a water sample following the lab's instructions, and drop it off with the completed requisition form and payment at that laboratory.

All posted prices

Total coliforms and E. coli presence-absence, Fee: $52; Total coliforms and E. coli MPN undiluted, Fee: $60; Heterotrophic plate count, Fee: $89

Who can use it: San Luis Obispo County, California; samples accepted at Public Health Department locations in San Luis Obispo and Paso Robles

  • San Luis Obispo County Public Health Laboratory, 2191 Johnson Avenue, San Luis Obispo · (805) 781-5507
  • Paso Robles Health Dept. (sample drop-off), 805 4th Street, Suite #201, Paso Robles · (805) 237-3050

Checked October 1, 2026. Official page · Report a change

See statewide tests and certified-lab lists for California.

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