Recommended Oil and Gas Pre-Drill Parameters

The Pennsylvania Department of Environmental Protection (DEP) has developed the following list of parameters for homeowners who wish to have their private water supply well tested independently. This list is not exhaustive, and homeowners may want to consider more extensive testing of their water supply. Additionally, while it is not recommended, if a homeowner chooses to test for fewer than the full set of recommended parameters, the minimum parameters are indicated in bold in the following lists.

Analyte (Inorganic)

Alkalinity¹

Chloride¹

Conductivity

Hardness

Bromide

pH¹

Sulfate²

Total Dissolved Solids¹

Turbidity¹

Total Suspended Solids

Analyte (Trace Metal)

Barium¹

Calcium¹

Iron¹

Magnesium

Manganese¹

Potassium

Sodium¹

Strontium

Arsenic

Zinc

Aluminum

Lithium

Copper

Vanadium

Boron

Chromium

Selenium

Analyte (Organic)

Methane¹

Ethane¹

Propane¹

Ethylene Glycol

Total Petroleum Hydrocarbons³

VOCs/(BTEX)⁴

Additional  Suggested Testing

Total Coliform Bacteria⁵

¹At a minimum, homeowners should have their private water supply well tested for the parameters listed in bold.

²Consider the presence of coal formations and oil-producing regions.

³Recommended as a preliminary screening test. If test shows a detection for total petroleum hydrocarbons, an environmental professional should be consulted and additional tests considered to identify the specific hydrocarbon source responsible for the water supply impacts. Please note there are many sources of hydrocarbons not related to oil and gas production.

⁴Due to the lower detection limit associated with the test method, volatile organic compounds (VOC)/benzene, toluene, ethylbenzene, and xylene (BTEX) testing may provide a more sensitive method for detecting hydrocarbon impacts.

⁵While not related to drilling activities, total coliform bacteria testing is suggested due to health concerns and as a way to assess overall drinking water quality.

It is recommended that homeowners test their water before any well site drilling or earth disturbance activities. To obtain valid results, samples must be collected by a qualified third party. Homeowners may also wish to discuss the option of having the headspace of their private well tested for the presence of methane gas at the time of sampling. Finally, homeowners should use an independent, Mississippi-accredited laboratory to ensure valid results.

Laboratory Testing of Drinking Water in Proximity to Oil and Gas Development

There are recommended practices, testing, and maintenance for private drinking water wells that can be performed by homeowners. For more information on regulations, applications, and forms, visit the Mississippi Department of Environmental Quality (MDEQ) and the Mississippi State Department of Health–Division of Onsite Waste Water for Private Water Wells.

Finding a Laboratory

1. Find a laboratory certified by MDEQ to perform these tests.
2. Contact a local laboratory and ask if it is accredited to perform the above testing or if it can refer you to a laboratory that is accredited.
3. Contact the MSDH Laboratory Accreditation Program via telephone at (601) 576-7582.

Before Sending Samples

1. Inform the chosen laboratory that you want to have well water tested for oil and gas pre-drill parameters.
2. Ask the laboratory if it is accredited to perform the requested testing. If the laboratory is not, ask if it will subcontract to an accredited laboratory.
3. Ask if the laboratory provides sample-collection services. MDEQ recommends that a qualified third party (a consultant or the laboratory) collect and transport the sample for testing.
4. Instruct the laboratory to perform the testing and reporting of the samples in accordance with all accreditation requirements related to Environmental Laboratory Accreditation Regulations.

Please contact MDEQ for information about well permits or to report complaints about wells.

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Publication 3374 (POD-10-24)

By Jason R. Barrett, PhD, Associate Extension Professor and Associate Director, Water Resources Research Institute. Special thanks to Brian Swistock, Penn State Extension, Senior Extension Associate, Water Resources Coordinator.