Diamond H2O® Residential Water Softeners

Choose Diamond H2O® for residential water softeners to soften your home’s hard water! All our water softeners go through third party validation to ensure their performance meets or exceeds national standards. TG Analytical Labs certifies each product using national standards (i.e. NSF/ANSI 44) to verify that our water softeners performance exceeds these standards. All validated products are listed on the DSPS website.

Whenever you have a question, you can depend on our expert service to support you and stand behind our products. Call 920-757-5440 to talk with a specialist!






DROP Cabinet Water Softener

DROP Pro Water Softener

Diamond LINQ Series Water Softener

DP Series

NOTE: The DP water softener series is discontinued. However, we have included the manuals for reference.

The DP series residential water softeners represent the pinnacle of efficient water conditioning. Within this range, the 9000 and 9100 models come equipped with the advanced 9000/9100 Controller, perfectly suited for 3/4″ and 1″ valves, ensuring streamlined flow and optimized softening performance. On the other hand, the 9500 model in this series boasts the robust 9500 Controller, designed exclusively for a 1.5″ valve, offering greater flow capabilities.

Water Softener Features:

  • 9000 – 3/4″ and 1″
  • 9100 – 3/4″
  • 9500 – 1.5″



Introducing our state-of-the-art home water softeners! At Diamond H2O®, we seek to help homeowners reduce high concentrations of minerals like calcium and magnesium in their water. This buildup isn’t just an inconvenience – it can lead to unsightly scale buildup in your pipes and appliances, lowered effectiveness of your water heaters, and even contribute to your soaps not lathering as they should, potentially leaving your skin and hair feeling dry.

Our systems operate on the proven ion exchange process, housing resin beads pre-charged with sodium ions. When hard water courses through our unit, the calcium and magnesium ions are effectively swapped for sodium ions, and making the water soft. Over time, as the beads become saturated with hard water minerals, our system intuitively regenerates by utilizing a salt solution from its brine tank, thus ensuring continuous soft water supply for your home. We’re not just offering a product, but a lifetime of service, ensuring regular maintenance and salt replenishment so your home enjoys the best of soft water every day.

Residential Water Softener FAQs

Here are some common questions asked about residential water softeners and services:

What are water softeners?

Water softeners are exchange systems, in that they exchange ions in the water. Calcium (Ca2+) and Magnesium (Mg2+) are the ions that cause hardness in water. Sodium (Na+) is the ion that a water softener uses to replace the calcium and magnesium ions with, resulting in soft water. Resin inside the water softener is used as an exchange medium. The resin loosely holds the Sodium (Na+) ions which are exchanged with Calcium (Ca2+) and Magnesium (Mg2+) ions. Once the resin becomes saturated with the calcium and magnesium ions, it must be regenerated and flushed out. After regeneration, the resin can remove Calcium and Magnesium again.

What brand of water softener is best?

At Diamond H2O®, we have several water softener brands available. The best one for your home will ultimately depend on your preferences, budget, and our recommendations for your existing setup. Our current water softener brands include: LINQ, DROP, Peacekeeper, Freedom, Patriot (single and twin), Reliant, and DP series. If you have questions about the best brand of water softener for your needs, we can walk you through the process and provide our recommendations.

Are water softeners worth the money?

If you’re considering investing in a water softener, it probably would be worth the purchase if your home’s water hardness is more than 5 grains per gallon (120 mg/L). Water softeners are worth the money for helping to prevent build-up of minerals on the inside of any pipes or water heaters; lengthening the life of some appliances in your home, and reducing the buildup of mineral spots and soap film on glassware, sinks, bathtubs, etc. Other factors like the presence of iron or other minerals could make increase your return on investment and potentially make your water safer in the process.

How do home water softeners work?

Home water softeners operate using an ion exchange process. As hard water, containing minerals like calcium and magnesium, flows through the softener’s resin-filled tank, these minerals are exchanged for sodium ions on the resin beads. This conversion transforms hard water into soft water. Over time, the resin beads become saturated with hard minerals and need regeneration. During this process, a salt solution from the system’s brine tank flushes and recharges the resin beads, restoring their sodium ion levels and prepping the softener for further use. This cycle ensures a consistent supply of soft water for household use.

To find out more information about how our water softeners could benefit your home or business, and to request a quote, please contact us at 920-757-5440.