Yes. The City of Dallas reports total hardness of 120 to 155 mg/L, which is 7.0 to 9.1 grains per gallon. In Roger Wakefield’s own field tests in Dallas homes, readings typically run 8 to 12 grains per gallon. The Water Quality Association classifies water above 7 grains per gallon as hard. Dallas sits well inside that range, which means scale accumulation in water heaters, fixtures, and appliances across the metro.
Most of the United States runs between 3 and 7 grains per gallon. Dallas runs higher than that, every day, in every house on the system.
Here is what that means on a service call. Scale does not announce itself. It builds on the heating element, inside the fixtures, through the appliance the homeowner just financed. The water heater that should have lasted twelve years fails at seven. The customer calls it bad luck.
It was not bad luck. It was nine grains, every gallon, for seven years.
You are the person standing in that garage when it fails. Right now you replace the heater. In November you learn how to explain why it failed, and how to make sure the next one lasts.
Full breakdown with every source linked: Dallas water quality, from the utility’s own numbers. For how Dallas compares with the other sixteen cities on the tour, see water hardness by city.
Disinfection byproducts dominate. The Environmental Working Group, an advocacy organization that applies its own health guidelines rather than federal legal limits, lists 17 contaminants in Dallas water above those guidelines, and 12 of the 17 are disinfection byproducts, compounds formed when chlorine reacts with organic material in the source water. Dallas also filed suit on January 14, 2025 against 3M, DuPont and other manufacturers to recover PFAS cleanup costs.
Being above an EWG guideline is not a legal violation, and it is worth knowing the difference. EWG sets its thresholds well below the EPA's enforceable limits, and Dallas Water Utilities reports compliance with federal standards. Both of those statements are true at the same time. The plumber who can explain that in a kitchen, without dismissing the homeowner's concern and without inflating it, is the one who gets believed about everything else.
The lawsuit matters more than any number on this page.
When a city sues chemical manufacturers over what is in its own water supply, the homeowner is not being sold fear by a contractor. The homeowner already read about it. They have questions, and they are asking somebody.
Right now, most Dallas plumbers answer that question with some version of “that’s not really what I do.”
That sentence is the most expensive one in the trade.
| Measure | Dallas | Source |
|---|---|---|
| Total hardness | 120–155 mg/L (7.0–9.1 gpg) | City of Dallas |
| Field readings, Dallas homes | 8–12 gpg | Roger Wakefield, field tests |
| Classification | Hard | WQA: hard is 7–10.5 gpg |
| National typical range | 3–7 gpg | - |
| Contaminants above EWG health guidelines | 17 | Environmental Working Group, advocacy guidelines |
| Of those, disinfection byproducts | 12 | Environmental Working Group, advocacy guidelines |
| PFAS litigation filed | January 14, 2025 | City of Dallas v. 3M, DuPont et al. |
Hardness classifications follow the Water Quality Association scale, the city hardness range comes from a December 1, 2023 City of Dallas memo to a council committee, and the 8–12 gpg field readings come from Roger Wakefield's own tests in Dallas homes. Contaminant counts are as published by the Environmental Working Group, an advocacy organization applying its own health guidelines, which are stricter than the EPA's enforceable limits. Background on water hardness from the USGS Water Science School and the EPA.
Dallas opens the Texas run of the HALO Water Tour because it is the largest plumbing market in Texas, it has documented hard water pushing nine grains per gallon, and it is Roger Wakefield’s home market after 45 years in the trade.
The Dallas–Fort Worth Metroplex supports one of the densest concentrations of working plumbers in the country. Hard water, an aging housing stock, and a city on record about contamination in its own supply.
I have worked in this market for 45 years. I know which neighborhoods have the worst scale and which supply houses open early. If I am going to prove this class works anywhere, it makes sense to prove it at home, in front of people who will tell me the truth.
Day one covers water science and certification: water chemistry, contaminant identification, reading a water quality report, field testing, and the first of three certification exams. Day two is product knowledge - what each HALO system does, which home needs which one, and how to present every product with authority. A unit is in the room to see and touch. Nothing is installed. This is a knowledge class. Day three is the sales curriculum - how to use a water test as a sales tool, presenting to a homeowner, pricing, objection handling, and local marketing.
Days one and two make you competent. Day three makes you money.
Tuition is $5,000 per seat. A HALO water treatment system typically installs for $6,000 to $8,000. Selling a single system covers the full cost of the class. HALO reports that some graduates recover $6,000 to $8,000 on their first day back in the field, and that most of its graduates see their first sale within two weeks of returning home.
A $5,000 class is expensive right up until you sell the first one.
HALO reports most of its graduates sell within two weeks - not because they went hunting, but because they walked into a house they were already scheduled at, ran a test they now knew how to run, and had a conversation they did not know how to have before.
One truck is one number. Put in how many you actually run, with your close rate and your pricing, and see the whole fleet.
Running a fleet? Put your own numbers in the revenue per truck calculator, or read the case for owners and general managers on the owners page.

Roger Wakefield is a Texas Master Plumber with 45 years in the trade, LEED AP accredited, and the creator of the largest plumbing education channel on YouTube. He has appeared on the Today Show, NewsNation, and Dr. Phil, and served on a skilled trades panel with the Acting U.S. Secretary of Labor.
I treated water quality as somebody else’s department for most of my career. I would get the question in a customer’s kitchen, say something about looking into a filter, and move on to the job I came for.
I have no idea how much money I walked past. It is a lot.
Yes. The City of Dallas reports total hardness of 120 to 155 mg/L as calcium carbonate, which is 7.0 to 9.1 grains per gallon. In Roger Wakefield’s own field tests in Dallas homes, readings typically run 8 to 12 grains per gallon. The Water Quality Association classifies water above 7 grains per gallon as hard - hard enough to scale water heaters and shorten appliance life.
7.0 to 9.1 grains per gallon, based on the City of Dallas reported range of 120 to 155 mg/L as calcium carbonate. To convert mg/L to grains per gallon, divide by 17.1. In Roger Wakefield’s own field tests in Dallas homes, readings typically run 8 to 12 grains per gallon.
$5,000 per seat. That covers three days of instruction, your certification, a complete water testing kit, all course materials, and catered lunch each day. Travel and lodging are not included.
November 3 through 5, 2026, Tuesday through Thursday, 8:00am to 5:00pm daily.
No. There is nothing to install and no tools involved - this is a knowledge and presentation class for the people who run and grow plumbing companies. Installing water treatment equipment for customers is governed by your state and local licensing rules, not by this certification.
Twenty, and the cap is real. Coaching, roleplay, and working your own numbers stop working past twenty people.
No. This is education and certification only. There is no protected territory, no exclusivity, and no requirement to purchase equipment.
This isn’t a webinar with 400 people and a chat box. It’s twenty seats, three days, and a revenue plan built on your own numbers. When Dallas fills, it fills.
Apply for Dallas