A water softener in Cedar Park, TX is working against some of the hardest municipal water in the Hill Country. In February 2024 the Lake Travis gauge read 631.5 feet. On September 12, 2026 it read 676.76. Everything Cedar Park drinks passed through that swing, because the City of Cedar Park (TCEQ public water system TX2460009) draws essentially all of its supply from floating intake barges in Sandy Creek Cove, treats it at the Don Webster plant on Lime Creek Road, and pipes it roughly ten miles east to Buttercup Creek, Twin Creeks, Gann Ranch and every other subdivision in town. When the lake falls, the water at your tap changes. When it rises, it changes again. That is the whole reason this page exists.
The lake sets the chemistry
Cedar Park's water is hard in every year, but the report you read depends on the year the lake had. The 2023 Consumer Confidence Report, written near the bottom of the 2022-2025 drought, listed hardness at 192 mg/L as calcium carbonate: about 11.2 grains per gallon. The 2025 report has it at 183 mg/L, or 10.7 gpg, with alkalinity of 144 mg/L and pH running to 7.8. Both numbers describe the same thing: alkaline limestone-lake water that drops calcium carbonate onto anything it warms or dries on. Total dissolved solids sit at a modest 286 mg/L, which is why a properly sized softener does its job cleanly here (there is not much else in the water competing for the resin).
What the drought did more visibly was to the disinfection side. The plant treats with free chlorine and converts to chloramine before distribution, holding an average residual of 3.09 mg/L. Chloramine does not off-gas the way chlorine does, so it lingers on rubber seals, RO membranes and the taste of coffee. And when warm, low, algae-rich lake water meets that chlorine, the byproducts climb: total trihalomethane samples ran 38.2 to 97.8 ppb in 2024, with a running annual average of 69.3 ppb against a limit of 80, up from a 45 ppb average in 2023. No violation, but the closest this system runs to a line. Whole-house catalytic carbon filtration is the standard residential answer to both the chloramine and the byproducts; ordinary carbon does not hold up against chloramine.
Four seasons at the intake
- Spring. Flashy Hill Country storms push turbidity and organic carbon into the lake, and the plant answers with more coagulant and more chlorine. A sediment prefilter ahead of a softener earns its keep in these weeks. Some springs refill the lake; some do not. Stage 3 restrictions took effect March 1, 2025, with a 9% conservation surcharge on every bill.
- Summer. Demand peaked near 21 million gallons a day in 2024, water sat longer in the mains, and that is when the TTHM samples reached 97.8 ppb. It is also when the July 4, 2025 flood took the Highland Lakes from roughly half full to more than 90% in days and sent the city back to Stage 1.
- Late summer. The BCRUA cities switch from chloramine to free chlorine for an annual flush (August 3 through September 1 in 2026). Taste and odor change for a month; catalytic carbon handles both forms without a filter change.
- Fall. Evaporation and downstream releases drop the lake again, about three feet between July and October 2025, and lake turnover can bring the earthy character that comes with any open Highland Lakes reservoir.
- Winter. The lowest levels of a multi-year drought arrive in January and February, when the $6M temporary low-lake intake gets recommissioned. Closer to home, a hard freeze is the season to worry about outdoor bypass valves and backflow assemblies; Cedar Park kept water flowing through Winter Storm Uri in February 2021, but exposed equipment is on the homeowner.
Built to waste less water
A city that ran one watering day a week and a rate surcharge from March through July 2025 does not need a softener that regenerates on a timer whether the resin is spent or not. The water softeners we specify for Cedar Park are demand-initiated: they meter actual use and regenerate only when the capacity is used up, which keeps salt and brine to a minimum and fits the city's Water Thrifty program. On the drinking-water side, we choose reverse osmosis systems with low reject ratios, so the gallons that go down the drain per gallon of finished water stay small. Efficiency is not a selling point here; it is part of sizing the system correctly.
Reading the house, not just the report
Cedar Park's housing stock has a median build year of 2006, and that shapes what we find in the garage. Shenandoah, Lakeline Oaks and the original sections of Buttercup Creek go back to the late 1970s and 1980s: original copper lines carrying thirty to forty years of scale, no pre-plumbed softener loop, and often a slab-on-grade install on the hose-bib side. The 2023 lead-and-copper sampling found a 90th-percentile copper reading of 0.623 ppm with one site over the action level, which is a case for an RO faucet at the kitchen sink in an older home even if the softener waits.
Gann Ranch, Forest Oaks, Twin Creeks and the Ranch at Cypress Creek are the 1990s-2000s volume market: builder-grade or no softener, a loop stubbed in the garage, and a first-generation gas water heater reaching the 15-to-25-year mark that scale shortens. Ranch at Deer Creek, Cypress Canyon, Woodford Estates and Walsh Trails run larger (multiple bathrooms, tankless or dual heaters) and need high-flow softeners that do not starve the second shower. Breakaway Park's one-to-three-acre airpark lots are the only part of town where a private well is even plausible, and we test before assuming anything there.
Reaching Cedar Park from Spicewood
We are based in Spicewood, about 29 miles and 48 minutes from central Cedar Park by way of TX-71 and RM 620 through Lakeway and Four Points; Anderson Mill West and Cypress Canyon, at the RM 620 end of town, are the closest neighborhoods to us. Visits are scheduled Monday through Friday, 8am to 5pm. Absolute Water Solutions is a TCEQ-licensed water treatment specialist (license WT001370), insured, and every job since 2003 has been done by our own crews. We test your water first, we explain what the numbers mean for your house, and we size the system to the lake water you actually receive. Call (512) 587-8188 or request a free estimate to get on the calendar.