Whole House Water Softeners in Roanoke

Roanoke's 2025 Drinking Water Quality Report names its source more precisely than most Fort Worth customers do: the water is drawn from Eagle Mountain Lake and bought treated from the City of Fort Worth. Eagle Mountain is a Tarrant Regional Water District reservoir on the West Fork of the Trinity River, about five miles northwest of Fort Worth, with a normal capacity of 185,087 acre-feet over 9,246 acres at conservation pool in the Water Development Board's 2018 survey. Fort Worth treats that lake at its Eagle Mountain Water Treatment Plant, rated at 108 million gallons a day, the second largest of the city's five plants; the city's history page dates it twenty years after the Rolling Hills plant, which began in 1972, and its planning documents count the lake itself as 66 million gallons a day of supply, with a 105 million gallon a day pump station and pipeline carrying raw water from it. The lake is not a closed system. The district has tied Lake Benbrook to Eagle Mountain Lake so that water pumped west from Cedar Creek and Richland-Chambers reservoirs can reach the Eagle Mountain plant, which means the raw water at the intake is a blend whose proportions change with the district's pumping. The federal facility inventory places the city's Fort Worth connection at the Lois Street pump station and its working plant at 301 A Gateway, where a 2 million gallon ground tank and pumps rated from 750 to 2,750 gallons a minute lift the water into the mains and up to a 1.5 million gallon elevated tank at 203 Fairway, 3.5 million gallons of storage for 3,122 connections and about 10,127 people.

Fort Worth's 2025 results, reprinted on page 6 of Roanoke's report, put total hardness as calcium carbonate at 108 to 150 ppm and 6 to 9 grains per gallon. That is the figure for Roanoke. The USGS scale calls 108 moderately hard and anything above 120 hard, so Roanoke's water crosses from one class to the other inside a normal year. Two companion rows explain the feel of it: total alkalinity ran 99.7 to 124 ppm and bicarbonate 99.7 to 120 ppm, which is to say nearly all of the alkalinity is bicarbonate, the form that drops out as scale when water is heated. pH was held at 7.8 to 8.5, on the alkaline side, which is how Fort Worth keeps the water from corroding pipe. Water in that range carrying 120 ppm of bicarbonate will leave a white film in a kettle; that film is calcium carbonate, a mineral, not a contaminant.

Roanoke samples its own system at two sites and held a chloramine residual that averaged 2.16 mg/L in 2025, but it adds no minerals and removes none, so the hardness in a Roanoke home is whatever left the Eagle Mountain plant a day or two earlier. Every address in the city is on that one supply, so the variation is seasonal rather than street by street, following the lake blend as the district moves water around. Six former city wells and their Paluxy pump stations at City Hall, Country Acres and Marshall Creek sit in that inventory as inactive, so no groundwater is in the mix today, and the state's January 2024 Denton County summary lists the district's lake system as Roanoke's only current source. The 150 ppm top of the range is the planning figure. Size a softener to 9 grains, the top of Fort Worth's range, or take the number from the free water test on the day it is run.

Sources: City of Roanoke — 2025 Drinking Water Quality Report · Texas Water Development Board — Eagle Mountain Dam and Lake · City of Fort Worth Water Department — Water & Wastewater Impact Fee Update · Fort Worth Water — History page, treatment-plant paragraphs · City of Fort Worth Water — Water Quality page, 2025 data · EPA SDWIS — Water System Facility records for CITY OF ROANOKE, TX0610008 · EPA SDWIS — Water System record for CITY OF ROANOKE, TX0610008 · Texas Water Development Board — Denton County Summary, January 2024