Why should I care about a wellfield?
For many years we believed that our groundwater was protected from contamination by being underground. We now know that substances on the surface can seep down and contaminate our drinking water supply. As Central Indiana grows the only source of additional water will be the groundwater resources.
How does this affect me in the medical/laboratory business?
- Changes to Indianapolis zoning codes and Marion County health ordinances will likely affect your business operations by mandating certain Best Management Practices (BMPs) that were previously voluntary (see below).
- If you are careful to contain your contaminants, you will avoid polluting your site, or environs and avoid a potentially expensive clean-up down the road.
- Being a good neighbor in your wellfield is good for your business – it will be appreciated by your customers.
What are potential contaminants?
Any chemical used as part of your operations could contaminate groundwater if handled, stored, or disposed of in an incorrect manner. Potential contaminants are generally chemicals used for imaging (if not digital), cleaning and disinfection agents, medical and hazardous waste, and the specific chemicals need for the processes conducted at your facility. At facilities with backup generators, transformers and fuel storage can be another potential contaminant.
What am I required to do under the new health code?
- Provide secondary containment for any containers over 40 gallons of liquids or 240 lbs of water soluble solids that can hold 110% of the volume of the container for at least 24 hours.
- Provide secondary containment for any areas where multiple containers adding up to 40 gallons of liquids or 240 lbs of water soluble solids that can hold 110% of the volume of the containers for at least 24 hours.
- Insure containment areas located outside are properly drained or covered from weather.
- Make an emergency response spill prevention plan. Check out this spill plan to help you start!
- Notify chemical suppliers and waste transporters in writing that you are in a wellfield protection area. Download a printable notification form.
- Post signs at all entrances so employees, customers, and visitors know that you are in a wellfield protection area. Post signs with the appropriate emergency numbers for your area. Post signs on sinks and within chemical storage areas that remind employees that chemicals can’t be dumped down the drains. Use our signs, or make your own.
- Create a chemical inventory that lists all of the chemicals at your facility. Use this worksheet to help you get started.
- Have a spill kit. View information on what should be in your spill kit.
- Train employees on the use of the spill kit. Log your training records on this form.
- Make sure your floors are in good condition to make sure no spills, leaks, or drips, can flow through the floor into the ground.
- Make sure all of your chemical containers are labelled.
What else can I do at my facility to help protect groundwater?
- Switch to imaging techniques that are entirely digital to remove the need for photo processing and the associated chemicals and waste.
- If your lab uses a xylene still for solvent reclamation, install secondary containment in the processing area and waste storage area.
- Close and seal floor drains near chemical or waste storage areas.
- Use an appropriate floor sealant in areas in which chemicals or waste are stored.
- Properly dispose of used chemicals or waste, which should never be poured onto the ground. You may use the Indianapolis ToxDrop program or a hazardous waste disposal company.
Education and Training
There are many resources and face-to-face help to assist you in being compliant. Here’s what you can do:
- Review our resource page for helpful videos, websites, and signs for your business.
- Contact us for a business assessment or help on developing your spill plan.
