Maine Environmental Lab.
One Main Street
Yarmouth, Maine 04096

Tel. 207-846-6569
Fax 207-846-9066


Hours: M-Th 8-5, F 8-4

Yes, We Test Drinking Water!

Are you buying a new home or concerned about your current well water? Are you on town water but live in a old house with ancient plumbing? Give us a ring at 846-6569 to discuss your concerns!

We run drinking water tests of all kinds, including "basic safety" and common real estate panels. Testing for single elements of concern (arsenic, copper, lead, fluoride, uranium, etc.) is also welcome. See "Our Analytical Services" page for a full list of tests available.

Please note: MEL does not sell water treatment systems.


Maine Environmental Lab Downloads

MEL Chain of Custody:  MEL COC Rev 12-4-14 (.pdf, 1 page)

MEL Acceptance Criteria and Sample Hold Times:  accept-09 (.pdf, 4 pages)

MEL Short Hold Time instructions (BOD, CBOD, Nitrates, OrthoPhosphorous, etc.): 2017-short-hold-w-bod-calendar (.pdf, 2 pages)

MEL BOD Sampling and Delivery Notes

MEL’s Pre-Treatment Instructions for Samples Tested for Cyanide: cnpretreat-05-and-cnspike-03 (.pdf, 1 page)

How to Take Good Samples

MEL’s Bacteria Sampling How-To: BacteriaSamplingTechnique-04 (.pdf, 1 page)

Hefty official document for compliance-level sampling:

EPA Method 1669 : Sampling Ambient Water for Trace Metals at EPA Water Quality Criteria Levels (.pdf, 39 pages)

Sampling WWTP Sludge: The Wastewater Treatment Plant Operators Guide to Biosolids Sampling Plans

Maine Department of Environmental Protection (DEP)

Home page:

Permits, Licenses, and Certifications page:

EPA Effluent Permittees

EPA National Pollutant Discharge Elimination System (NPDES) Home

EPA Region 1 NPDES Home

Maine Department of Environmental Protection – Water and Clean Water Act

Drinking Water Information

US Environmental Protection Agency drinking water resources:

Maine Drinking Water Program – excellent non-commercial resource for questions about your drinking water:

State of Maine information for Well Water Quality:

RCRA Permittees

EPA Hazardous Wastes Home


Maine Law:  State of Maine Rules and Regulations – Water Rules