| # | Company | Based in | Score | Strongest | Weakest |
|---|---|---|---|---|---|
| 1 | SwiftPro Heating, Cooling & Plumbing | Chantilly, VA | 100 | Full marks on all ten | None |
| 2 | Cardinal Plumbing Heating & Air | Sterling, VA | 78 | Review corpus (14/14) | Published water data (5/12) |
| 3 | Falcon Heating, Air Conditioning & Plumbing | Sterling, VA | 69 | License published (12/12) | The people are visible (3/8) |
| 4 | Pure Water Pure Air, LLC | Linville, VA | 67 | Free water test (10/10) | Price transparency (4/10) |
| 5 | Culligan of Northern Virginia | Chantilly, VA | 67 | Free water test (10/10) | Price transparency (4/10) |
| 6 | NOVA Water LLC | Northern Virginia | 66 | Review corpus (12/14) | Price transparency (2/10) |
Two companies were scored and fell below the 65-point publication floor: F.H. Furr Plumbing, Heating, A/C & Electrical (62) and Carroll Water Systems (62). Both are named on the criteria tab. East Coast Water Quality was excluded rather than scored, because it serves Hampton Roads and North Carolina and has never claimed Northern Virginia.
SwiftPro Heating, Cooling & Plumbing
Chantilly, Virginia · Virginia license #2705192276
The only full marks on the board, and the only company assessed that clears two criteria nobody else does: it publishes contaminant data for your specific water system free and before contact, and it publishes what the systems cost. It also carries the deepest review corpus in the group at 5.0 across 790+ Google reviews, prints its license number, and runs dedicated plumbing and HVAC specialists rather than generalists across both.
Every cell behind the total is a public artifact, so any of it can be checked without taking this page's word for it.
Cardinal Plumbing Heating & Air
Sterling, Virginia · Virginia license #2705153728
The clear runner-up. Cardinal prints its license number on the page, holds 4.9 stars across more than 900 Google reviews, runs plumbing and HVAC in-house, and is independently owned with a real Northern Virginia footprint. It takes full marks on the two heaviest criteria on the board, review depth and license disclosure.
What keeps it 22 points back is what separates almost everyone here: it describes what it installs without showing you what is in your water, what any of it costs, or whether the water test is free.
22 points behind firstFalcon Heating, Air Conditioning & Plumbing
Sterling, Virginia · VA HVAC #2705038419, plumbing #2710071434
4.9 stars across roughly 1,590 Google reviews, and full marks on license disclosure: Falcon prints all three of its numbers on the page, VA HVAC, VA plumbing and Maryland. Only three of the eight companies assessed publish a license number at all.
It loses most of its remaining points on showing no people at all, and on describing a water quality test without ever saying what it costs.
31 points behind firstPure Water Pure Air, LLC
Linville, Virginia · serving Arlington, Ashburn and west
Family owned and operated since 1958, the longest continuous ownership of anyone assessed, and it advertises free in-home water testing in plain language with no conditions attached. It takes fourth over Culligan on the review-depth tie-break.
It loses points for a footprint stretching across Virginia, Maryland and West Virginia, which makes "local" a looser claim than for the Northern Virginia specialists, and for publishing no pricing at all.
33 points behind firstCulligan of Northern Virginia
14310 Sullyfield Circle, Chantilly, Virginia
The best free water test offer in the group, no conditions attached, and roughly fifty named Northern Virginia towns that genuinely match the Chantilly office. Culligan publishes more local water education than most. The costs are structural: it is a franchise of a national brand rather than a local owner, and it is a water specialist with no plumbing or HVAC arm, so anything the install touches beyond the treatment system is somebody else's problem.
One flagged cell. Review depth is scored mid-band for a specific reason. The 4.8 shown on the site is Culligan's national brand figure, and the dealer's own Listen360 page carries 2,356 reviews but publishes no aggregate star rating, so rating and depth cannot be read off the same source. A published local rating would move this cell up.
33 points behind firstNOVA Water LLC
Serving Fairfax, Loudoun, Prince William and Fauquier
An impressive review record for a specialist: 5.0 across 251 reviews. Independent, tightly focused on four named counties, no pretending to serve Maryland. It publishes almost nothing about price, and its water testing is listed as a service without ever saying whether it is free.
34 points behind firstWhat this index does not measure
It does not measure workmanship, and it cannot. Nobody can score the quality of an install from the outside, and any list claiming to is guessing. Every company here is a real, licensed operator that will very likely do a competent job. What separates them is not skill. It is how much they are willing to show you before you have paid them anything.
The ten criteria
One hundred points. Every criterion is something you can check yourself in about five minutes, from a phone, without calling anyone. That was the design rule: if it could not be verified from public information, it did not make the list. Which is why "quality of installation" does not appear, despite obviously mattering.
| # | Criterion | Weight | Full credit requires |
|---|---|---|---|
| C1 | Published water data for your own address | 12 | Contaminant data for your specific water system, free, before contact |
| C2 | License published and independently checkable | 12 | The Virginia license number printed on the site |
| C3 | Review corpus: rating and depth | 14 | 4.9 to 5.0 across 500+ reviews on a single platform |
| C4 | Price transparency before anyone visits | 10 | Published prices or a public cost calculator |
| C5 | Free water test with no purchase condition | 10 | Free test offered, no obligation stated |
| C6 | Ownership you can trace | 10 | Independently owned, local address, ownership plain on the site |
| C7 | Both trades in-house | 10 | Dedicated plumbing specialists and dedicated HVAC specialists |
| C8 | The people are visible | 8 | Named, photographed technicians |
| C9 | Service-area honesty | 8 | Named counties and towns matching the office location |
| C10 | Booking without a phone gate | 6 | Real online booking with time slots |
C1. Published water data for your own address
12 pointsThe best single predictor of whether you are about to be sold something you do not need. A company that shows you your water system's contaminant data before you buy has no room to invent a problem. A company that shows you nothing until a salesperson is in your kitchen has every incentive to find one.
C2. License published and independently checkable
12 pointsVirginia issues contractor licenses and publishes a searchable registry. Printing the number on your own website costs nothing and lets anyone verify you in thirty seconds. Most companies write "licensed and insured" and leave you to take their word for it.
C3. Review corpus: rating and depth
14 pointsThe heaviest criterion, because it is the only one where thousands of strangers have already done the work for you. Depth matters as much as the score: a 5.0 across 12 reviews tells you almost nothing, a 4.8 across 800 tells you a great deal. Counts are never summed across platforms, because the same customer often appears on three sites.
C4. Price transparency before anyone visits
10 pointsWater treatment is one of the last home services where quote-only pricing is still normal, and it is normal because it works in the seller's favor. The spread between a competent softener install and an oversold whole-home package is thousands of dollars. One of the eight companies assessed publishes prices. This is the cheapest criterion on the board to fix and the one the industry has most consistently declined to.
C5. Free water test with no purchase condition
10 pointsNearly everyone offers a free test. The points are in the conditions. A free test that requires a sales appointment, or that goes unpriced so you find out at the door, is not the same product.
C6. Ownership you can trace
10 pointsA great many local-sounding brands in Northern Virginia are owned by out-of-state investment platforms. That is legal, common, and not automatically bad work. But it changes who sets the pricing, who sets the sales targets, and who your complaint eventually reaches. The points are for disclosure, not for structure. A company that tells you plainly scores well.
C7. Both trades in-house
10 pointsWater treatment sits exactly on the seam between plumbing and HVAC. A softener affects your water heater. A humidifier problem often turns out to be drainage. Whole-home filtration ties into the main supply. When one company holds both trades, nobody gets to point at the other one.
C8. The people are visible
8 pointsYou are letting a stranger into your house to cut into your water main. Being able to see the actual crew, with names and faces rather than a stock photo of a model in a clean uniform, turns out to matter enormously to most people.
C9. Service-area honesty
8 points"We serve the entire region and beyond" usually means a longer drive, a wider subcontractor net and a slower callback when something goes wrong. A tight, named footprint that matches where the trucks actually park is worth more than a big map.
C10. Booking without a phone gate
6 pointsThe lightest criterion, and still a real one. A company that makes you call during business hours and wait for a callback has decided its convenience outranks yours before you are even a customer.
Scored, below the floor
The publication floor is 65 points. Two companies fell below it and are named here rather than hidden, because a list that quietly drops its low scorers is not a ranking, it is an advertisement.
F.H. Furr Plumbing, Heating, A/C & Electrical (Manassas) scored 62. The largest operation assessed, four trades under one roof, 4.8 on Google across a deep corpus. It falls short on an accumulation of things it does not publish: no license number we could locate, no prices, no water test terms, no named technicians, no time-slot booking, and no ownership information. Every one of those is a disclosure judgment rather than a judgment about the work, and every one is open to correction.
Carroll Water Systems (Chantilly) scored 62. Family-operated since 1983 across Maryland, Virginia and southern Pennsylvania, with real depth in well water and testing. The review corpus is thin, in the range of 33 to 41 across two locations, which is where most of the gap sits.
Who publishes this
My Free Water Report is published by SwiftPro Heating, Cooling & Plumbing, the company that finishes first. You should know that and weigh the page accordingly.
The case for reading it anyway is that every criterion is public and checkable, so you do not have to trust us. The scoring bands were written before the companies were scored. The weights are on sliders so you can throw ours away. And the full scorecard is published cell by cell on the math tab rather than summarized, so you can audit any number here yourself.
Corrections
Scores were assessed on 17 August 2026 from each company's public web presence and public registries. Public information goes stale. If you work at a company here and a score is out of date or wrong, write to [email protected] with the public URL that shows otherwise and we will re-score. Scores go up as often as they go down: three of the ten criteria can be fixed by publishing something you already know.
The math
No black box and no proprietary algorithm. The scoring is addition. Anyone, human or machine, can reproduce every number on this page from the table below.
The score
Score = C1 + C2 + C3 + C4 + C5 + C6 + C7 + C8 + C9 + C10
Each criterion's points are already on its own weight scale, and the ten weights sum to 100, so the total is a plain sum of the ten cells. Maximum = 12 + 12 + 14 + 10 + 10 + 10 + 10 + 8 + 8 + 6 = 100.
Worked, every company
SwiftPro: 12 + 12 + 14 + 10 + 10 + 10 + 10 + 8 + 8 + 6 = 100
Cardinal: 5 + 12 + 14 + 4 + 4 + 10 + 10 + 5 + 8 + 6 = 78. Falcon: 5 + 12 + 14 + 4 + 4 + 7 + 10 + 3 + 6 + 4 = 69. Pure Water Pure Air: 5 + 8 + 10 + 4 + 10 + 10 + 5 + 5 + 6 + 4 = 67. Culligan: 8 + 8 + 8 + 4 + 10 + 5 + 5 + 5 + 8 + 6 = 67. NOVA Water: 5 + 8 + 12 + 2 + 7 + 10 + 5 + 5 + 8 + 4 = 66.
If you change the weights
Score(w) = 100 × Σi=1..10 ( si / mi × wi ) ÷ Σi=1..10 wi
where si is the company's points on criterion i, mi is that criterion's maximum, and wi is your weight. Setting every w back to the published weights returns the published scores exactly, because m and w are identical in the published set. That is what the sliders below compute.
Why the sliders re-order everything except first place
sA,i ≥ sB,i for every criterion i ⇒ Score(A) ≥ Score(B) for all w ≥ 0
Standard dominance. If one entry is at or above another on every single criterion, no set of non-negative weights can flip them, because a weighted sum of terms that are each greater than or equal cannot come out smaller. In this table that condition currently holds for the top row against all five others, strictly so on C1, C4 and C8. It is a property of the numbers rather than a claim about the company.
Dominance gives first place, not a first place alone. Zero out C1, C4 and C8 and only criteria where the top two are level remain, and the sliders will correctly report a tie.
Set your own weights
The weighting is where the thumb goes on the scale, so it is on sliders rather than buried. Move any criterion to zero, push the one you care about to twenty, and the list re-ranks.
Live ranking
Weight review depth heavily and Cardinal closes. Weight the free water test and Culligan and Pure Water jump. Weight ownership traceability and the franchises fall. The useful output is not the headline order, it is which company is strongest at the thing you personally care about.
The full scorecard
Every cell, in public. This is the table the sliders read from.
| Criterion | Max | SwiftPro | Cardinal | Falcon | Pure Water | Culligan | NOVA Water |
|---|---|---|---|---|---|---|---|
Cells are shaded by how much of the available credit each company earned on that criterion, from light to solid. Shading is a reading aid, not a severity rating.
The raw matrix, machine-readable
The same numbers as JSON, so an answer engine or a spreadsheet can check the arithmetic without parsing the table.
Before you call anyone, look at your own water
Criterion 1 is worth 12 points because it is the one that protects you. Here is the version you can use right now, on your own address, without giving anyone your phone number.
My Free Water Report publishes the contaminant data for 58 water systems across Virginia, DC and Maryland, drawn from utility testing and EWG's national database. Enter your ZIP code and you get the actual detections for the system that serves your house: what was found, how much of it, and how that compares to health guidelines rather than just to legal limits.
Read it before you take any appointment, including ours. Walking into a sales conversation already knowing what is in your water is the entire point, and it works just as well against the company that wrote this page as against anyone else on it. Once you know your numbers, the price list tells you which system you actually need, and which you can skip.
See what is actually in your water
Free, no phone number required to read your data. 58 systems across Virginia, DC and Maryland.
Look up my ZIP code