Whole House Water Softeners in Richardson

Richardson's water arrives already treated. The North Texas Municipal Water District takes raw water from Lavon Lake, its largest source, and treats it at its Wylie plant, with Lake Texoma, Jim Chapman Lake, Lake Tawakoni, Bois d'Arc Lake and the East Fork reuse project feeding the regional system behind it. What the city adds is pressure and storage. Richardson's Water Production division describes a system of 5 pump stations with 25 service pumps between them, 7 ground storage reservoirs and 7 elevated towers, run from a central control room through a SCADA system that is operated around the clock to keep pressure up across the city, and the state has rated the system Superior. The city's water quality technician takes a chlorine residual reading every day in each pumping zone, which is the clearest sign that Richardson is not one tank but several zones fed from the district's lines. The federal SDWIS inventory for Richardson, system TX0570015, names the zones that technician walks: three active purchased-water connections from the district, at the Eastside, Northside and Shiloh pump stations, plus an emergency interconnect with the City of Dallas. Its ground tanks are 8.5 and 5.0 million gallons at Eastside, 3.0 and 3.0 at Northside and 3.0 and 2.0 at Westside; its elevated tanks run from 0.5 million gallons at 524 Lockwood to 2.0 at 2452 North Collins and 823 Woodway; and the largest pumps, 7000 gallons a minute, are at Eastside 2. The city's water quality page adds the sampling rhythm: 100 bacteriological samples a month, pH and disinfection by-product samples each quarter, lead and copper every three years.

None of that pumping changes the minerals. The figure on this page, 96 to 200 ppm total hardness for 2025, is the Wylie plant's result for the year, and it is the range every city on that plant carries in its 2025 report; Garland's, for one, shows 96.0 to 200 ppm as calcium carbonate with 200 the peak, and its table of calcium, magnesium, sodium, alkalinity and dissolved solids is the district's data, identical for Richardson. Divide by 17.1 and the range runs from about 5.6 grains per gallon to 11.7. On the USGS scale the low end is moderately hard and the high end is very hard, so the same tap can sit in two classes in one year. The district's own description is moderately hard, and it names what Lavon Lake carries into the plant, calcium bicarbonate and magnesium carbonate, plus iron and lime; its homeowner arithmetic is total hardness in mg/L divided by 17.12.

For a Richardson home the pumping zone matters for pressure and for how long water sits in a tower, not for hardness. The district fills every one of those zones with identical water, so two houses in two zones get the same minerals on the same day, and the difference between two readings is the season each sample was taken. Where a resident sees it is the white film on a glass shower door, the crust on a kettle element and a water heater that has to work harder each year, all of which the district's water quality page puts down to those minerals rather than to anything in the treatment. A softener for Richardson is sized to the 200 ppm end, call it 12 grains, and the free water test shows which point between 96 and 200 your tap has reached on the day we measure it.

Sources: City of Richardson - Water Production · City of Richardson - Water Quality · City of Garland - 2025 Water Quality Report · North Texas Municipal Water District - Our Water System · North Texas Municipal Water District - Water Quality · EPA SDWIS / Envirofacts water system facility records for TX0570015