Well water treatment in Johnson City, TX is unusually well documented, which makes it easier to get right. Johnson City runs its water in public. The Blanco-Pedernales Groundwater Conservation District keeps its office on West Main, a few blocks from the 1916 limestone courthouse, and the monitor well on that lot is telemetered: anyone can look up how far down the Ellenburger water table sits on a given morning (about 61 feet below ground in mid-September 2026, in a well 464 feet deep). The county posts its drought stage the way it posts the burn ban. The septic inspector works out of 200 North Avenue G. When the Pedernales came up in July 2026, the USGS gauge number was the one that mattered. In a county seat of about 1,600 people, water is not a private worry; it is the civic conversation, and it splits into two halves that meet at the city limit sign.
Absolute Water Solutions has been treating Hill Country water from Spicewood since 2003, and Johnson City is one of the places where that conversation is most worth having. Here is what both halves look like from where we stand.
Five wells, one chlorine number, no hardness line
Inside the limits, the City of Johnson City serves 874 connections from five wells in the Ellenburger-San Saba aquifer: Well 2 on Danz Well Road, Wells 3 and 4 on the south side of US 290, and Wells 5 and 6 at Avenue I, with treatment plants at Danz Well Road and Avenue I and the Lady Bird elevated tank above them. About three-quarters of the Ellenburger water pumped in Texas goes to four town supplies, and Johnson City is one of them.
The city disinfects with free chlorine, averaging 1.11 mg/L in the 2024 report, and there is no chloramine anywhere in Blanco County, which makes the taste side of treatment simpler than it is in Austin: standard carbon does the job. What the report does not carry is a hardness number. The 2020, 2022 and 2024 reports list regulated contaminants only, and we will not print a figure the utility has not. The nearest measured value is a USGS sample of a 700-foot Ellenburger well in Johnson City from November 2016: alkalinity of 337 mg/L as calcium carbonate and 455 mg/L of total dissolved solids, the profile of very hard bicarbonate water. Disinfection byproducts are low (TTHM 10.1 ppb, HAA5 2.2 ppb), nitrate runs around 2 mg/L, and gross alpha sits at 6 pCi/L against a limit of 15. A city-water home here is a softener conversation first and a kitchen-tap conversation second.
The housing makes the softener case. The 1879 townsite around the square still holds pre-1940 rock and frame cottages and 1950s-70s ranch houses along Elm, Pecan and Main, many of them now B&Bs and short-term rentals that fill for Lights Spectacular, and much of that stock carries galvanized or old copper lines that have been scaling for decades. Around the Avenue I and Danz Well Road plants the subdivisions date from the 1970s to the 2000s, and about 19 percent of city housing is manufactured, on PEX with a small mechanical footprint. Electric heat serves 93 percent of city households, which usually means an electric tank water heater, and an electric element on very hard water is the appliance that dies first.
Past the city meter: two aquifers and a rain gauge
The city system stops at 874 meters, but the Johnson City census division holds about 2,220 households. The arithmetic says roughly 60 percent of the area's homes draw their own water: private wells, rainwater cisterns, or one of two micro-systems, Stonegate Subdivision (21 connections) and Trinity Oaks Preserve toward Round Mountain (18). This is where well water treatment in Johnson City actually lives, and the water changes with the direction you drive.
North and west of the river and around town, wells go into the Ellenburger, the same fractured dolomite the city pumps: hard bicarbonate water, yields anywhere from a dry hole to hundreds of gallons a minute, and the radon and radium the state water board flags for this aquifer. South and east, toward Blanco, Hye and Pedernales Falls, wells finish in the Trinity (Hensell, Cow Creek, Glen Rose), and that is different water altogether. A USGS-sampled Trinity well at 433 feet south of town measured 1,940 mg/L of hardness, 1,640 mg/L of sulfate and 2,830 mg/L of dissolved solids in 2021; three Glen Rose wells sampled in 1996 ran 578 to 2,380 mg/L of hardness, and rotten-egg odor is common in the Glen Rose. A softener alone cannot carry that load. The train we design for a Trinity well usually runs sediment, then iron and sulfur removal where the test finds it, a softener sized for the real grain count, and reverse osmosis at the kitchen for sulfate and dissolved solids.
Rainwater is the third source, and in the gated acreage subdivisions it is not a hobby. Legacy Hills listings on the US 290 side advertise 32,000-gallon systems; The Preserve at Walnut Springs, Redbud Ranch, Homesteads at Deer Creek and Stanton Vistas run wells and cisterns on five-acre-and-up lots; 464 Ranch and Flat Creek Ranches west of town have the longest drives and the deepest wells. Rainwater is soft and slightly acidic, so a potable cistern wants sediment, carbon, UV and pH correction, and blending it with hard well water changes the softener math. We install Viqua UV systems for exactly that stage.
Drought stages, well registrations and the septic inspector
Because the aquifers are shared, the county regulates them in the open. Every well in Blanco County must be registered with the district; domestic wells are exempt from operating permits but still keep their spacing from property lines and neighboring wells. The 2024 county development rules set five acres as the minimum lot for a home on a well and septic, require a Water Availability Report with 24-hour pump tests for new well-served subdivisions, and put a note on the plat telling buyers to plan for softeners, reverse osmosis and storage tanks. The county is the state's authorized septic agent, which brings in Texas Health and Safety Code 366.013: a softener may drain to a septic system only if it regenerates on demand and is labeled as such, and a pre-2003 timer unit must be replaced with a demand-initiated one whenever the softener or the septic system is replaced. We size and plumb to that rule on every acreage job.
Drought is the other public number. The district declared Stage 3 in August 2022, with rainfall a foot or more below normal and some owners lowering pumps; it reached Stage 4, with no outdoor watering, and stayed there until April 17, 2026; it stepped down to Stage 3 and then to Stage 2 on July 16, 2026. Those stages track static levels, and a falling level shows up at the tap as air-spitting faucets, a short-cycling pump and cloudy or sandy water. A sediment prefilter and stored water on a float switch are the practical answers, and they are why our first step in Johnson City is water testing rather than a catalog. The Texas Well Owner Network screened local wells for coliform, E. coli, nitrate and salinity at the Community Resource Center in October 2025; if your sample came back with something on it, the treatment side of that result is the work we do.
What the July 2026 flood left in the wells
The date Stage 2 took effect is the date the Pedernales set its modern record. On July 11, 2026 the river near Johnson City was flowing under 6 cubic feet per second; on July 16 the USGS gauge recorded a daily maximum of 89,500, the highest since 1979, at a stage near 25 feet. Wellheads and drainfields on the river bottoms went under, and the Pedernales Subdivision's five-acre river-access lots and the larger river-frontage tracts are the addresses where that matters most. A flooded well needs shock chlorination, a bacteria test after the chlorine clears and a full filter change; Ellenburger karst wells that never flooded can still run cloudy for days after a rain like that. A positive result gets boil-water guidance from us and a scheduled visit, not a promise we cannot keep.
Softeners for Ellenburger water
A water softener in Johnson City, TX is sized to some of the hardest water we treat. The city's report does not publish a hardness figure, but the five municipal wells draw from the Ellenburger-San Saba limestone, which the Texas Water Development Board describes as inherently hard, and Trinity wells south of town test far harder still. We install water softeners matched to a tap test rather than a county average, and on ranchettes outside the city CCN, where every home is on septic, we specify demand-initiated regeneration so the unit meets the state discharge rule.
Thirty-eight miles around the gorge
Johnson City is about 22 miles from Spicewood as the crow flies and about 38 by road, because the Pedernales gorge sends you around: TX 71 west to US 281 and south through Round Mountain, or RM 962 across to 281, roughly 47 minutes. We treat it as a planned trip and schedule it during business hours, Monday through Friday, 8am to 5pm. The company has been at this for 23 years with more than 1,000 projects behind it, every job done by our own crews, under TCEQ water treatment license WT001370 and with insurance in place, for homes and businesses alike, whether that is a courthouse-square B&B on city water or a ranch on a Trinity well. Call (512) 587-8188 or request a free estimate, and tell us which side of the city limit sign you are on.