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Most homeowners in Erlanger, Florence, and across Northern Kentucky know their water is hard. The limestone geology that underlies Boone, Kenton, and Campbell counties delivers mineral-heavy water that leaves scale on fixtures, shortens appliance life, and affects everything from how soap lathers to how your morning coffee tastes. What’s less commonly understood is that hardness is only one part of the water quality picture. Total dissolved solids, chlorine from municipal treatment, trace contaminants like lead and PFAS, and microbiological concerns are all separate issues that a single treatment approach doesn’t fully address.
Arlinghaus provides whole-home water treatment solutions for homeowners throughout Erlanger, Florence, Covington, Independence, and all of Northern Kentucky, including reverse osmosis systems, ultraviolet disinfection, water softeners, and custom treatment solutions. We’re licensed plumbers, not appliance salespeople, and we start every water quality conversation with a free digital water test so you know exactly what you’re dealing with before we recommend anything.
Before recommending any water treatment system, Arlinghaus performs a free state-of-the-art digital water test at your home. NKY homeowners are often surprised by what the results show: hardness levels well above the regional average, chlorine from municipal treatment, and in older homes throughout Erlanger, Covington, and Newport, potentially elevated lead levels from aging service lines and pre-1986 plumbing fixtures.
The water test takes the guesswork out of system selection. Rather than installing a system based on general assumptions about NKY water, we specify exactly what your home needs based on what’s actually in your water. Call to schedule your free water test and consultation.
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NKY’s water hardness is among the highest in the tri-state region. The limestone aquifer and Ohio River source water that feeds municipal systems across Boone, Kenton, and Campbell counties delivers water at 120–150 mg/L of calcium and magnesium hardness, well above what most water treatment guidelines consider ideal for household use.
What that means practically for homeowners in Erlanger and Florence:
Hard water and drinking water quality are related but separate concerns. High mineral content affects the taste and feel of your water and the longevity of your appliances. Contaminants like lead, chlorine, PFAS compounds, and microbiological organisms are a separate category that requires targeted treatment to address. Understanding the difference between these problems is the first step toward choosing the right solution which is exactly what our free water test is designed to do.
At Arlinghaus, it all starts with passion. We’re a family-owned business specializing in electrical, plumbing, heating, and air conditioning services. With years of experience and a team of certified residential contractors, we provide reliable services that homeowners can depend on.
We’re proud to serve the communities of Northern Kentucky, Southeast Indiana, and Greater Cincinnati, Ohio areas, with an office based in Northern Kentucky and the Sharonville, Cincinnati area. We love our region, which blends the warmth of happy small-town charm with the variety and excitement of big-city life.
Our award-winning, expertly trained team has over 6,000 five-star reviews. We’ve been voted the Best in Cincinnati for Plumbing, Heating, and Air Conditioning, Best of the North by Cincy Magazine, and Best of NKY for 10 consecutive years, which means our commitment to quality and customer satisfaction is recognized year after year.
It all starts with passion. Arlinghaus is proud to be a trusted, family-owned plumbing and HVAC company in the Kentucky, Cincinnati, and Indiana areas.
It all starts with passion. Arlinghaus is proud to be a trusted, family-owned plumbing and HVAC company in the Kentucky, Cincinnati, and Indiana areas.
A properly specified whole-home water treatment system addresses the full range of water quality concerns NKY homeowners face:
We’re a family-owned business with deep roots in the Erlanger, Kentucky, and Greater Cincinnati communities. Our commitment to quality service and customer satisfaction has made us a trusted name in the area for years. Here’s a little more about what makes our electrical company stand out:
Family-Owned and Operated:
We’re proud to be a local business that puts the community first.
Experienced Team:
Our team is fully certified, highly trained, and passionate about what they do.
Comprehensive Services:
From minor repairs to full installations, we handle all residential needs.
Customer-First Approach:
We focus on clear communication and friendly service every step of the way.
Satisfaction Guarantee:
We're not happy until you’re happy — every job comes with a satisfaction guarantee.
Thank you to our community for voting Arlinghaus as The Best in Cincinnati, Best of NKY 10 years running , Best of the North and more:
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Arlinghaus installs the full range of water treatment solutions for NKY homes. Here’s what we offer:
An under-sink reverse osmosis system filters water through multiple stages, a sediment pre-filter, activated carbon filters, a semi-permeable RO membrane, and a post-filter, producing highly purified drinking and cooking water at the tap. RO removes total dissolved solids, lead, PFAS and other forever chemicals, arsenic, chlorine, fluoride, and other contaminants that affect both water safety and taste. For most NKY homes on municipal water, an under-sink RO system paired with a whole-home water softener is the most practical and cost-effective approach to comprehensive water quality.
UV disinfection uses ultraviolet light to neutralize microbiological contaminants, including E. coli, Cryptosporidium, and Giardia Lamblia, without adding any chemicals to your water supply. It’s particularly valuable for homes with well water or any source where microbiological concerns are present, and it works in combination with RO or filtration systems to provide a complete treatment solution. Unlike chlorine treatment, UV disinfection leaves no taste or odor in the water.
A salt-based water softener is installed at the point where water enters your home, conditioning all water before it reaches any fixture or appliance. For NKY homeowners dealing with 120–150 mg/L of hardness, a whole-home softener is the most impactful single investment for protecting water heaters, dishwashers, washing machines, and the supply lines throughout your home. Soft water also means healthier skin and hair, better soap lather, and cleaner fixtures.
Not every NKY home has the same water quality challenges. Arlinghaus builds custom treatment combinations tailored to what your specific water test reveals whether that’s a softener paired with RO, a UV system added to an existing setup, a whole-house filtration system for well water, or a combination of multiple treatment stages. We don’t sell packages, we recommend what your water actually needs.
Every Arlinghaus water treatment installation starts with a free digital water test and ends with a system that’s been tested and confirmed working before we leave. Here’s the process:
Water treatment system costs vary based on the type of system, the scope of installation, and what your water test reveals. Here’s what affects the final number:
Arlinghaus provides upfront pricing on every water treatment installation before any work begins. Start with a free water test and we’ll give you a clear recommendation and price before any commitment is required.
Find out what’s actually in your water before deciding on a treatment system. Call Arlinghaus now or book online, free digital water testing and whole-home water treatment installation throughout Erlanger, Florence, and all of Northern Kentucky.
We believe that one of life’s greatest gifts is the ability to celebrate one’s place in a thriving community, with family and friends, where everyone shares a common set of goals and dreams. We are fortunate to work and live in great communities throughout Kentucky, Cincinnati and Indiana, areas that have welcomed and embraced us over the years. We are happy to give back to those communities through a variety of initiatives, some very public, others totally private. We’re a people-first company.
