Universal City Water Hardness & Quality Report (2026)
Water Hardness
14.7 grains per gallon
Source
groundwater
pH Level
8.5
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
909.5 mg/L
Est. Daily Cost
$0.67
energy & soap waste
Source: See methodology section below · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Universal City, your appliances are currently losing 33% efficiency due to mineral buildup.
| Appliance | In Universal City | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 4.3 yrs | 12 yrs | -64% |
| Water Heater | 5.6 yrs | 15 yrs | -63% |
Regional Water Comparison
How Universal City compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Universal City, Texas | 251 mg/L | 0 ppt | 🔴 Very Hard | groundwater |
| Schertz, Texas | ≈ 120–179 mg/L | 0 ppt | 🟠 Hard | groundwater |
| Converse, Texas | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | reservoir |
| Live Oak, Texas | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | groundwater |
| Cibolo, Texas | ≈ 120–179 mg/L | 5.4 ppt | 🟠 Hard | reservoir |
National Benchmark
How Universal City compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Universal City | 251 mg/L | 🔴 High |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Universal City's Water Unique?
Local geology and source profile
Universal City, Texas obtains its drinking water from the municipal system operated by City of Universal City Public Works, serving approximately 20,000 residents in Bexar County near San Antonio. The supply is sourced entirely from groundwater wells tapping the Edwards Aquifer, with no surface water treatment plants. Water undergoes basic treatment including disinfection with chlorine, fluoridation, and residual monitoring at the Public Works Service Center on Kitty Hawk Road. The utility also purchases supplemental water from the Schertz-Seguin Local Government Corporation, which draws from similar aquifer sources.
The watershed feeding the Edwards Aquifer spans the Balcones Fault Zone recharge area, where rainwater infiltrates through thin soils into fractured Cretaceous limestone formations including the Edwards Group (Edwards Limestone, Dolomite) and Georgetown Limestone. This karst geology promotes dissolution of carbonate rocks, enriching the groundwater with dissolved minerals and yielding a hard supply prone to high mineral loads. The aquifer's dynamic flow through solution channels contributes to elevated natural hardness from prolonged rock-water interaction in recharge zones.
Very hard water at 251 mg/L in Universal City leads to noticeable scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan — hot water heaters may fail prematurely by 30–50%. Soap lathering is poor, leaving films on skin, hair, and laundry. Regular descaling of fixtures and biannual flushing of water heaters is advised. A water softener is strongly recommended for whole-home protection. The 2019 and 2022 Consumer Confidence Reports confirm EPA compliance; fluoride is added for dental health at around 0.7 ppm, and nitrate was 1.95 ppm in 2019, well below the 10 ppm limit.
Geology & Source: Edwards Aquifer — Cretaceous Edwards Limestone karst system, Balcones Fault Zone, south-central Texas; fractured carbonate dissolution of calcium and magnesium produces very hard water (251 mg/L)
Other Texas Water Reports
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Frequently Asked Questions
Is Universal City's water safe to drink?
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How does Universal City compare to the USA average?
Data Sources & Methodology
Water quality data for Universal City is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.