YOUR PARTNER IN GROUNDWATER SOLUTIONS

CHL has more than 50 years of combined fluorescent dye tracing experience specializing in karst landscapes as well as non-karst applications.

We offer cost-effective options tailored to individual project needs with

scientific integrity and rigorous quality assurance.

We are an industry leader in groundwater tracing and have worked with

clients and partners in 36 states and 12 countries. Our clientele

includes federal and state agencies, municipalities, non-profits,

environmental engineers, and geotechnical firms.

CHL is getting a facelift! Renovation to update our facilities starts soon,

please see details below.

The lab will be closed on June 19th and June 30-July 4, 2025

Supply orders and sample analysis will not be available while the lab is closed.

Please note the following sample receipt deadlines to ensure lab reports are delivered before the extended closure:

7 business day TAT - 3:30 pm on Wednesday, June 18, 2025

(Standard analysis rates)

4 business day TAT- 3:30 pm on Monday, June 23, 2025

(50% analysis surcharge)

48-hour TAT-3:30 pm on Wednesday, June 25, 2025

(100% analysis surcharge)

Professional and helpful staff, excellent service, very reliable in all they do. They also give great advice in carrying out dye-trace tests. Highly recommend.