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Sampling and Testing

  • EGLE regulates the public water supplies to ensure that they are complying with state and federal requirements to provide clean water to Michigan residents. Local health departments are the primary regulatory agencies with respect to residential wells.

    The Michigan Department of Environment, Great Lakes, and Energy (EGLE) is responsible for enforcing the Federal Safe Drinking Water Act under the legislative authority of the Michigan Safe Drinking Water Act, which means that EGLE regulates the public water supplies to ensure that they are complying with state and federal requirements to provide clean water to Michigan residents. There are approximately 1,400 community water supplies and 10,000 noncommunity water supplies regulated by EGLE.

    Additionally, EGLE also regulates the water well drilling industry. Michigan has nearly 1.12 million households served by private wells, with approximately 15,000 domestic wells drilled each year. EGLE investigates drinking water well contamination and oversees remedial activities at sites of groundwater contamination affecting drinking water wells.

    Local health departments (LHDs) are the primary regulatory agencies with respect to residential wells. They are required to maintain a list of environmental contaminants within their jurisdiction, and they consider this information when they issue permits for new wells. Local Health Departments work with Michigan residents to ensure compliance with monitoring and routine inspections of Type II and III wells. Your Local Health Department is usually at the district or county level, and its phone number can be found in a local telephone book or online at MALPH.org.

  • If you have concerns regarding your water quality, you can request testing through the Michigan Department of Environment, Great Lakes, and Energy (EGLE), your local health department, or you can contact a private lab.

    The Drinking Water Analysis Laboratory offers services for the analysis of drinking water quality. These services include all physical, chemical, and microbiological testing procedures currently used for this purpose by state and local water supply programs.

    If you receive your water from a community water supply, you can see the municipality's Consumer Confidence Report (CCR) also known as their Annual Drinking Water Quality Report on the municipality's webpage or call them to obtain a copy. If you have your own private household well, and would like to do testing of your drinking water, please take a look at the "laboratory" webpage above for information on possible tests or call EGLE's drinking water lab,

    For information regarding Flint Water testing results, please visit Michigan.gov/FlintWater or contact EGLE's Environmental Assistance Center at 800-662-9278.

  • There are many different reasons to get your water tested at a laboratory. People get their drinking water tested when they notice an unusual color or odor, when they are selling or buying a home, and when a new well is installed or an old well or well pump is maintained.

    Homeowners should contact their Local Health Department for a recommendation of what to have their water tested for. The U.S. Environmental Protection Agency (U.S. EPA) recommends that private wells be tested for coliforms and nitrate/nitrite, at a minimum.

  • No. You must use a sample bottle that has the right preservatives and holds the right volume for the test that will be done on the water sample. EGLE sampling units have been quality control checked for specific analyses. A list of required bottles or units, along with test codes, can be found on EGLE's Drinking Water Laboratory Testing Fee Schedule. Questions about required bottles and test codes can be directed to EGLERRD-DWCustServ@michigan.gov or 517-335-8184.

  • You can order bottles for collecting your water sample by emailing the Bottle Order Form to EGLE-RRD-DWBottles@michigan.gov, or call 517-335-8184. You may also pick up bottles at the laboratory, just call ahead. Many local health departments also have a supply of EGLE sample bottles, forms and shipping materials.

  • If the EGLE sample bottle came from the EGLE Drinking Water Laboratory or your local health department, the sample must be submitted to the EGLE Drinking Water Laboratory.

  • Instructions for collecting your water sample are included with your sample bottle and the Request for Water Analysis form. Follow the instructions to collect your water sample. Different bottles have different collection requirements based on testing methods and preservatives that may be included in your bottle. For additional questions contact the EGLE Drinking Water Laboratory at EGLE-RRD-DWCustServ@michigan.gov or call 517-335-8184. 

  • Some tests require thermal preservation upon sample collection and your water sample may need to be refrigerated. If you received ice packs with your sample bottle, make sure to freeze the ice pack for 24 hours and use these when you return the sample to the EGLE Laboratory. Refrigerate your sample for 8 hours if possible if you will not be able to return it to the laboratory within 24 hours of collection. DO NOT freeze the sample. Samples received frozen are not acceptable for testing

  • You may send your water sample UPS Next Day Air, USPS Priority Mail Express, or FedEx Priority Overnight to the EGLE Drinking Water Laboratory, Monday through Thursday to be received by Friday. You must include a completed Request for Water Analysis form and check or money order made payable to the State of Michigan.

    You may also bring the sample in personally. Contact the laboratory at 517-335-8184 on the day of delivery to obtain access to the facility. You will be required to show a pictured ID at the gate.

  • A separate form is required for each sample collection point, address or different collection date/time. If you are submitting multiple samples indicate a unique identifier on the sample bottle label so we are able to match the Request for Water Analysis form with the corresponding sample bottle (i.e. well number, address, sampling point etc.).

  • YES. You must indicate the sample collector, collection date and time (circle am or pm) for your water sample on the Request for Water Analysis form. Testing methods have a U.S. EPA maximum allowable holding time from the time your water sample was collected until the time of testing. Without the collection date and time, it is not possible to determine if your water sample can be tested within the holding time, and your sample will be rejected

  • If your sample is collected for compliance with the State of Michigan you should check this box. This ensures that the laboratory will only accept your sample if it meets testing requirements such as holding time or thermal preservation. If you do not check this box, the laboratory will test your sample and your payment will be processed, even if it did not meet acceptance criteria. Results from samples that do not meet testing requirements in this case may be used for informational value only.

  • Please use the test code "B." This test analyzes drinking water for Total Coliforms AND E.coli

  • Testing methods have a U.S. EPA maximum allowable holding time from the time your water sample was collected until the time of testing. Results from samples analyzed past holding time may be less accurate. The holding time is indicated on the bottle label.

  • Surface water samples can be delivered to the Laboratory Monday through Thursday 8:00am - 3:00pm. We do not accept surface water samples on Friday. All surface water samples must be delivered to the laboratory within six (6) hours of collection to allow the laboratory to begin testing within the specified U.S. EPA hold time criteria (8 hours from time of collection). If you are bringing in a large number of surface water samples to the Laboratory, please call 517-335-9581 to schedule these in advance.

  • No. Testing for Bacteria requires a 24 hour incubation time to complete the analysis. Results are released daily by the EGLE Laboratory to get this critical information to our customers as quickly as possible

  • You can expect test results for your water sample in 3-10 days after your sample is received at the Laboratory for most testing. For fastest reporting, enter your email address on the Request for Water Analysis form to get your test results. First class mail may take an additional 3-4 days.

  • The EGLE Drinking Water Laboratory is located at 3350 N Martin Luther King Jr. Blvd., Lansing, MI 48906.

  • The EGLE Drinking Water Laboratory is open Monday through Friday from 8:00am to 5:00pm, except holidays. Samples may be dropped off at the laboratory Monday through Thursday, 8:00am to 4:30pm and Friday 8:00am to 3:30pm.