Mission Water Hardness & Quality Report (2026)
Water Hardness
180+ mg/L
Very Hardestimated · not lab-verified
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
402.6 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 Mission, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Mission | 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 Mission compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Mission, Texas | ≈ 180+ mg/L | 27.1 ppt | 🔴 Very Hard | reservoir |
| La Homa, Texas | ≈ 180+ mg/L | 6.7 ppt | 🔴 Very Hard | mixed |
| Alton, Texas | 281 mg/L | 7.1 ppt | 🔴 Very Hard | groundwater |
| McAllen, Texas | ≈ 180+ mg/L | 47.5 ppt | 🔴 Very Hard | reservoir |
| Hidalgo, Texas | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Mission compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mission | ≈ 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 Mission's Water Unique?
Local geology and source profile
The City of Mission, Texas operates two water treatment plants drawing from the Rio Grande River: the South Water Treatment Plant (8.0 million gallons per day capacity) and the North Water Treatment Plant (17.5 million gallons per day capacity), with a combined capacity of 25.5 million gallons per day. Raw water from the Rio Grande is delivered to reservoirs via irrigation canals. Mission is located in Hidalgo County in the Rio Grande Valley. The utility employs conventional treatment methods and uses chloramines and chlorine dioxide as disinfectants.
The Rio Grande Valley watershed is characterized by Quaternary alluvial deposits overlying Tertiary sediments rich in calcium and magnesium minerals. The upstream Rio Grande basin passes through limestone and gypsum-bearing geological formations, which dissolve into the river as it flows southward through South Texas. This geological setting produces a naturally very hard water supply consistent with regional South Texas water chemistry patterns.
At very hard water levels, Mission residents face significant scale buildup in pipes, water heaters, dishwashers, and washing machines. Soap and detergent effectiveness is substantially reduced, requiring higher product usage. Water softening is strongly recommended for households and businesses to extend appliance lifespan, improve cleaning efficiency, and reduce maintenance costs. Regular descaling of water-using appliances is advisable. The City of Mission received a water quality grade of 70/100 (Fair) per a 2026 TapWaterData report, with three contaminants above EPA health-based guidelines (MCLGs). Residents should consult the utility's most recent Consumer Confidence Report for detailed contaminant levels.
Geology & Source: Rio Grande River, Rio Grande Valley, South Texas; Quaternary alluvial deposits overlying Tertiary sediments — upstream limestone and gypsum formations dissolve calcium and magnesium into river water, producing very hard supply
Other Texas Water Reports
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Frequently Asked Questions
Is Mission's water safe to drink?
Do I need a water softener in Mission?
How does Mission compare to the USA average?
Data Sources & Methodology
Water quality data for Mission 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.