DFW Water Hardness
Dallas-Fort Worth municipal water systems supply water with varying hardness levels — typically 120–350 mg/L (7–20 grains per gallon) depending on the municipality and time of year. This is classified as hard to very hard water. Every time this water contacts glass and evaporates — from irrigation, rain spray, or window condensation — it deposits dissolved calcium and magnesium on the glass surface.
Over months and years without professional purified-water cleaning, these deposits build up into a white haze that progressively obscures the view and eventually etches into the glass surface permanently.
The Purified-Water Solution
Professional purified-water window cleaning removes all dissolved minerals from the water before it contacts glass. When purified water dries, it leaves absolutely nothing behind — making it the only method that breaks the mineral deposit cycle.
Blues Home Services uses commercial reverse-osmosis and deionization systems to produce cleaning water with 0–5 TDS (total dissolved solids) for all DFW window cleaning. The result is streak-free glass that stays clean significantly longer than conventional cleaning — and protects glass from the permanent etching that prolonged mineral exposure causes.