Wake County Water Quality Lab

Pick up sample bottles or drop off samples for private well water testing. Testing is offered for coliform and E. coli bacteria, inorganics, iron bacteria, and sulfur bacteria. Samples are accepted from 8:30 a.m. until 5:00 p.m. Monday through Thursday, and 8:30 a.m. until 4:00 p.m. on Friday. The Lab does not accept bacteriological samples the day before a holiday. See below for exceptions.


PWSS Customers: All samples for 2024 compliance must be submitted by Friday, December 20. 

The lab will be closed on Friday, April 5, 2024.


Ground Floor, Room G-80

Monday–Thursday, 8:30 a.m.–5:00 p.m. Fridays, 8:30 a.m-4:00 p.m.

This facility follows Wake County holiday hours. See above for exceptions.