Water Quality & Filtration Installer
This business runs on a two-visit model: first, a $150-$300 test visit where you pull a water sample, run it against a lab panel or on-site kit for hardness, iron, bacteria, nitrates, lead, and increasingly PFAS, and hand the homeowner an easy-to-read report. Second, a $3,000-$12,000 install visit where you plumb in the specific combination of equipment the test justified — a sediment pre-filter, a water softener for hardness, a UV lamp for bacteria, and increasingly a whole-house or under-sink reverse osmosis stage for PFAS and lead. A well owner in a rural county might need a $4,000 iron/sulfur and UV package; a suburban homeowner spooked by a PFAS news story might buy an $800 under-sink RO unit as a starter, then upgrade to whole-house RO ($4,800-$8,000 installed) once convinced. The margin comes from selling diagnosis plus install as one relationship instead of homeowners buying a box filter online and never following up, and from the recurring filter-change and re-test visits that come after.
Real, growing demand driven by PFAS regulation and well-water anxiety, with a defensible niche against big-box installers (Culligan, Kinetico, RainSoft franchises) by leading with independent, unbiased testing rather than a sales pitch for one brand's equipment.
The highest-margin move isn't the install, it's owning the re-test. Most homeowners never re-test after buying a filter, so systems quietly fail (spent cartridges, fouled resin) while the family assumes they're still protected. Selling an annual re-test-and-service visit ($120-$200) alongside the install turns a one-time sale into a recurring relationship, and it's also your best lead source: every re-test on an aging system is a natural upsell to a repair or upgrade, and every satisfied customer becomes a referral to their well-water-owning neighbors.
Suits you if
- ✓You have or are willing to get hands-on plumbing/mechanical experience
- ✓You're comfortable explaining lab results and chemistry to non-technical homeowners without jargon
- ✓You want a trade business with a clear certification path (WQA) rather than needing a full plumbing license everywhere
- ✓You're fine with physical install work (crawlspaces, basements, well pits) at least in the early years
Skip it if
- ✕You want a fully remote or passive business from day one
- ✕You're not willing to invest in real lab-grade testing (homeowners can tell the difference from a $20 strip test)
- ✕You live in a dense urban market with no well-water households and low PFAS media coverage
- ✕You can't front $8k-$22k in equipment and certification costs before first real revenue
Skills: Basic plumbing competence (sweating copper, working with PEX, pressure tank basics) is the floor. WQA's CWS/CI certifications teach the water chemistry and correct sizing of softeners, RO membranes, and UV systems, which is what separates a credible installer from someone reselling an Amazon filter. Customer-facing skills matter more than people expect: explaining a lab report calmly, without either scaring or underselling a homeowner, is what converts a $200 test visit into a $6,000 install.
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