The Geauga County Laboratory is a multifaceted lab with capabilities that range in both water and wastewater analysis. Each of our analysts hold water and wastewater certifications through the State of Ohio.

Semi annually we participate in Federal and State proficiency testing and have random and scheduled surveys through the EPA and the Health Department.

Water Tests

Our most requested test for drinking water is the Total Coliform Bacteria, also known as the water potability test. This test determines the presence or absence of bacteria. In the event that total coliform is present in your private well water then a well chlorination should be performed at your earliest opportunity.

Water tests are only accepted back certain days; call the office or the lab to find out when to drop off your water sample. In order to take these tests a pre-sterilized bottle must be purchased before water is drawn.

Sample Procedures

Sample bottles shall be purchased at the Department Office, Monday – Friday from 7am to 4pm.

The GCDWR Office has relocated to 12611 Ravenwood Drive Suite# 390, Chardon, OH 44024. Samples can only be dropped off at the GCDWR Laboratory, located just south of Ravenwood Drive on the east side, there is a location sign posted at the road. It is a long driveway.

GCDWR laboratory

Department Laboratory

13335 Aquilla Rd
Chardon, OH 44024


Drop-Off Times

Total Coliform: Monday – Wednesday from 7am to 4pm. No exceptions.

Fecal/E. Coli: Monday – Thursday from 7am to 12pm. No exceptions.

For Laboratory drop offs, please use side door marked entrance and place sample bottle in large Brown refrigerator. Please make sure all paperwork is completed and rubber banded to the bottle.

All Other: Monday – Thursday from 7am to 4pm. No exceptions.

If you have any questions, please call 440-279-1975.


Year Category
Well Chlorination Well-Chlorination.pdf Oct 12, 2023 2023-10-12 Laboratory
Lab Tests New Form 2022 Lab-Tests-New-Form-09.14.22-1.pdf Oct 12, 2023 2023-10-12 Laboratory
Total Coliform Instructions Total-Coliform-Instructions.pdf Oct 12, 2023 2023-10-12 Laboratory
Fecal Sample Procedure Fecal-sample-procedure.pdf Oct 12, 2023 2023-10-12 Laboratory
Certified Labs Certified-Labs.pdf Oct 12, 2023 2023-10-12 Laboratory
13335 Aquilla Rd. Map 13335-Aquilla-Rd.-Map.pdf Oct 12, 2023 2023-10-12 Laboratory
No Results Found