Many homeowners in hard water areas who also have a septic system as part of their home plumbing can be concerned about the lack of compatibility between the two. It’s well-known that hard water can damage plumbing over time, and one system you don’t want to fail is your septic system. So, homeowners may turn to water softeners or conditioners, but how can you be sure that your choice is safe for your septic system?
Salt-based water softeners remove the hard minerals from water through a process of ion exchange, while salt-free conditioners change the chemical structure of minerals so that they cannot stick to plumbing but remain present in the water.
Salt-free systems may be an attractive option for some septic homes, but remember that they don’t perform the same as conventional water softeners.
How Salt-Based Softener Discharge Can Affect Septic Drain Fields
Traditional water softeners use salt as part of the regeneration process, meaning their wastewater discharge is a concentrated brine. In some cases, this can affect the balance of bacteria in a septic tank or cause damage to the septic tank drain field, which many homeowners will want to avoid.
Water softener discharge does not necessarily damage every septic system – you should check with your manufacturer or installer for more details. It’s also true that local regulations can affect what is appropriate for septic systems, so be mindful of these.
How Salt-Free (TAC) Conditioners Work Differently
Salt-free conditioners use a process known as Template-Assisted Crystallization:
- Hard water flows through a tank of polymer beads.
- Beads attract calcium and magnesium ions (that make the water hard).
- Minerals group together, forming insoluble crystals on the surface of each bead.
- Mineral crystals break free and remain suspended in the water, unable to stick to plumbing.
With a salt-free conditioner, hard water is conditioned rather than changed. There is no brine discharge as salt is not part of the process.
These conditioners can help to reduce the formation of scale on your pipes and appliances, but do not necessarily reduce the actual mineral content of the water, as the minerals remain present in a different form.
Learn more about our salt-free water conditioners.
Local Rules/HOA Restrictions on Salt Discharge
The rules regarding saltwater discharge can vary depending on rules set by your county or Homeowners Association (HOA). You should never assume that every salt-based system is permitted in your area or appropriate for your septic system, simply because it is a popular product.
Your equipment choices could be restricted by any number of rules, so make sure to check local requirements carefully before making any purchase. You are welcome to consult our knowledgeable team at Aqua Clear for information and support.
Choosing Salt-Free vs Salt-Based for Well/Septic Homes
When you are choosing a system for your home, you should make sure to consider:
- Your scale control needs vs system capability.
- Local water hardness.
- System salt use and discharge.
- Maintenance requirements.
- Your goals for water quality.
We always recommend testing water before selecting a treatment system, as the right system for you depends on the specific make-up of the water, not simply whether your home has a well or septic system.
Learn more about our whole-house water systems.
For an in-depth comparison of systems, check this page.
When a Salt-Free System Isn’t Enough for Very Hard Water
Water conditioning and water softening are not the same thing. You may not get the results you desire in a very hard water area if you only use a water conditioner. Your water may require mineral removal with a conventional, salt-based water softener in order to have the softest, contaminant-free water possible for your home.
At Aqua Clear, we are well placed to evaluate your water conditions and recommend an appropriate approach that meets local guidelines. We can support you in lowering your water hardness, reducing scale buildup in your plumbing, and improving the performance of your appliances. Contact us to find out more.
