Whole House Water Softeners in Shady Shores

Shady Shores, on the Lewisville Lake shoreline along Interstate 35E seven miles southeast of Denton, incorporated in October 1960 and has never had a water department of its own. Its water comes from the Lake Cities Municipal Utility Authority, created in 1963 as a local government agency for Shady Shores, Lake Dallas and Hickory Creek and reconfirmed by an act of the 76th Legislature. Federal drinking-water records for the authority list three kinds of source: groundwater from its own wells, treated surface water bought from the Upper Trinity Regional Water District, and groundwater bought from the Harbor Grove Water Supply Corporation. That same federal record marks the Harbor Grove link as an emergency connection, and the authority’s own 2025 report table lists only its three working wells and two Upper Trinity connections as sources. The federal facility inventory lists a 300,000 gallon elevated tank listed at 412 Shady Shores and a North pump station at 109 Swisher Shores with four 1,000 gallon a minute pumps and a half million gallon ground tank.

Upper Trinity treats Lewisville and Ray Roberts lake water at its Tom Taylor plant in Lewisville, and that is where the hardness question turns for Shady Shores. Reservoir water picks up dissolved calcium and magnesium from the land it drains, and treated lake water in this part of Texas is generally moderately hard: the North Texas Municipal Water District, on the Collin County side, says exactly that of its own lake water and tells homeowners to divide mg/L by 17.12 for grains. Upper Trinity moves its water through more than 103 miles of pipeline to more than 20 member and customer utilities, treating an average of 30 million gallons a day, and its history counts its contract members as 21 cities and towns, one utility authority and three special districts. Its second plant, Tom Harpool in Providence Village, adds 30 million gallons a day of capacity on Jim Chapman Lake water, which is why the district table reprinted in the authority’s report labels the source as Lewisville and Chapman lakes. Groundwater from the deep Denton County sandstone is the opposite, soft and sodium-rich; the Mustang district’s wells in the same formations printed under 6 ppm in 2025. A home in Shady Shores can be on the lake water, the wells or a mix, and the proportion changes with demand and is not something the authority publishes by street.

We have not found a hardness figure for Shady Shores in the authority’s report, so this page gives none and does not substitute a neighbor’s. The report’s one Shady Shores sampling address, 213 Shadow Lane, appears only in the disinfection byproduct table, and nothing in its four pages speaks to minerals. The practical test is the one at your own tap: if the free water test reads in the single grains, you are on lake water and a softener sized to the high end of that reading will stop the scale; if it reads near zero, you are on the wells for now and the better buy is a filter for taste and chlorine. Either way the figure in ppm and grains per gallon is yours, measured, not inferred.

Sources: Handbook of Texas: Shady Shores, TX · H.B. 3804, 76th Legislature, enrolled text · U.S. EPA Envirofacts SDWIS: water system facilities for TX0610029 · Upper Trinity Regional Water District — Water Sources · North Texas Municipal Water District — Water Quality · Mustang SUD 2025 Consumer Confidence Report, secondary constituents table · LCMUA 2025 Consumer Confidence Report · Upper Trinity Regional Water District: Water Treatment and Delivery · Upper Trinity Regional Water District: History