Public Health Laboratory
The Public Health Laboratory offers bacterial testing for well-water safety and tick identification for Lyme disease upon request. Those who live, work, own property or visit in Napa County are eligible for laboratory testing. The drop-off site is located at the Public Health Division in Building B at 2751 Napa Valley Corporate Drive in Napa.
Please make checks out to: Napa/Solano Public Health Laboratory. We cannot accept cash or credit cards.
- Well Water Testing is $24
- Tick Identification is $30 (See the Tick Identification / Testing Form (PDF).)
Fees are subject to change without prior notice.
Well Water Testing Procedure
- Pick up a kit at the Public Health Division.
- The kit contains:
- A container for your water specimen
- A form to be submitted with the sample
- After collecting the sample return the kit to the Public Health Division
Water Testing Resources
Tick Removal Procedure
- If possible, have someone else remove the tick from you.
- Use tweezers or forceps rather than your fingers.
- If you must touch tick use a tissue or gloves to protect your hand.
- Grasp the tick's mouthparts as close to the skin as possible.
- Gently pull the tick straight out, steadily and firmly. Do not twist or jerk the tick.
- If mouthparts of the tick break off and remain in your skin, consult your physician.
Tick Collection Procedure
- Place tick into clean capped container or a zip-lock plastic bag. Place a piece of cotton or tissue moistened with tap water into the container with the tick. (Note: do not use alcohol, formalin or other liquids. Do not stick tick to scotch tape. These materials make testing for the Lyme organism unsatisfactory.)
- Bring or ship tick to the laboratory as soon as possible
- Complete a laboratory Tick Identification / Testing Form (PDF) or supply the following information:
- Name, address and birth date of person bitten
- Location of the bite (arm, neck, etc.)
- Date tick removed
- Estimated duration of time tick was attached (i.e. 4hrs, 24hrs, etc.)
- Geographical location (what city, park, etc.) tick was obtained
- Phone number, name and address of person to receive report
- Any obvious symptoms