Brenham Water Hardness & Quality Report (2026)
Water Hardness
180+ mg/L
Very Hardestimated · not lab-verified
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
677.3 mg/L
Est. Daily Cost
$0.91
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 Brenham, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Brenham | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 6.6 yrs | 12 yrs | -45% |
| Water Heater | 8.3 yrs | 15 yrs | -45% |
Regional Water Comparison
How Brenham compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Brenham, Texas | ≈ 180+ mg/L | 118.5 ppt | 🔴 Very Hard | reservoir |
| College Station, Texas | 8.07 mg/L | 24.1 ppt | 🟢 Soft | groundwater |
| Bryan, Texas | 7.79 mg/L | 0 ppt | 🟢 Soft | groundwater |
| Katy, Texas | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | groundwater |
| Cypress, Texas | ≈ 180+ mg/L | 5.9 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Brenham compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Brenham | ≈ 180+ mg/L | 🔴 High |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Brenham's Water Unique?
Local geology and source profile
The City of Brenham Water Utility supplies residents of Washington County, Texas, drawing water from the Brazos River watershed. This surface water undergoes a conventional treatment process at the utility's plant, utilizing disinfectants like chloramines, chlorine, and chlorine dioxide before it's distributed to homes and businesses. The City of Brenham's water quality report for 2026 flagged some contaminants exceeding EPA health guidelines in certain areas, though the utility works to meet Safe Drinking Water Act standards.
Brenham's water originates from the Brazos River watershed, which traverses the Cretaceous sedimentary geology of central Texas. Underlying the region are extensive limestone and chalk formations, characteristic of the Edwards Plateau transition zone. These mineral-rich bedrock types naturally contribute calcium and magnesium to both surface runoff and the groundwater feeding the watershed, resulting in a hard water supply common throughout much of Texas.
Homeowners will likely notice scale buildup on appliances like kettles, coffee makers, and water heaters, and may find that soaps and detergents don't lather as effectively. Dishwashers and washing machines are particularly susceptible to mineral deposits, which can shorten their operational lifespan. To combat these effects, protect your plumbing, and improve the feel of the water for daily use, installing a water softener is highly recommended. Residents should always refer to the annual Consumer Confidence Report for the most up-to-date details on contaminant levels and advisories.
Geology & Source: Cretaceous sedimentary formations; limestone and chalk deposits cause moderate to high hardness
Other Texas Water Reports
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Frequently Asked Questions
Is Brenham's water safe to drink?
Do I need a water softener in Brenham?
How does Brenham compare to the USA average?
Data Sources & Methodology
Water quality data for Brenham 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.