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Alton Water Hardness & Quality Report (2026)

Water Hardness

189mg/L
Very Hard

11 grains per gallon

Source

mixed

pH Level

8.1

neutral = 7.0

Lead

0.004 mg/L

βœ“ Below action level

TDS

451.2 mg/L

Est. Daily Cost

$0.50

energy & soap waste

Source: USGS Water Quality Portal Β· Updated 2026

189mg/L as CaCO₃Very Hard

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 Alton, your appliances are currently losing 25% efficiency due to mineral buildup.

ApplianceIn AltonSoft Water CityEfficiency Loss
Kettle
3.4 yrs
8.5 yrs-60%
Washing Machine
6.6 yrs
12 yrs-45%
Water Heater
8 yrs
15 yrs-47%
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Regional Water Comparison

How Alton compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
β–Ά Alton, Texas189 mg/L7.1 pptπŸ”΄ Very Hardmixed
Mission, Texas172.5 mg/L6.7 ppt🟠 Hardmixed
McAllen, Texas266 mg/L8.7 pptπŸ”΄ Very Hardmixed
Edinburg, Texas140 mg/L6 ppt🟠 Hardmixed
Pharr, Texas435.5 mg/L12.3 pptπŸ”΄ Very Hardmixed

National Benchmark

How Alton compares to the USA average

BenchmarkHardnessAppliance Risk
β–Ά Alton189 mg/LπŸ”΄ High
USA National Avg150 mg/L🟠 Moderate
Badger Top Rated8.5 mg/L🟒 None

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What Makes Alton's Water Unique?

Local geology and source profile

Source: MixedTDS: 451.2 mg/LpH: 8.1

Alton, Texas, in Hidalgo County β€” a Hidalgo County city adjacent to McAllen and Mission in the lower Rio Grande Valley of south Texas β€” receives its municipal water from a local water utility, drawing from the Rio Grande (Hidalgo County) or blended Rio Grande-groundwater through the lower Valley water treatment system.

The hard 189 mg/L hardness and elevated TDS of 451.2 mg/L reflect the lower Rio Grande Valley supply's intense calcareous and evaporitic character β€” consistent with other McAllen metro communities. The Rio Grande at Hidalgo County drains the Chihuahuan Desert β€” Cretaceous Del Carmen Limestone (calcareous β€” high hardness contributor), Permian Yeso Formation (evaporitic gypsum β€” major TDS contributor), and Permian Artesia Group (evaporitic). The concentrated Cretaceous calcareous and Permian evaporitic loading from the Chihuahuan watershed produces the hard lower Rio Grande supply.

At 189 mg/L, Alton's water is hard β€” scale builds steadily in kettles and appliances, dishwashers benefit from rinse aid, and water heaters should be descaled annually. Monthly descaling is recommended. The PFAS level of 7.1 ppt warrants a certified drinking water filter β€” the Hidalgo County lower Rio Grande Valley agricultural chemical corridor and the Texas-Mexico border PFAS background from industrial and agricultural sources contribute to Alton's elevated readings.

Geology & Source: Alton in Hidalgo County draws from a local utility on the Rio Grande or mixed wells (Hidalgo County, south Texas) β€” the Rio Grande at Hidalgo County drains the Chihuahuan Desert (Cretaceous Del Carmen Limestone, Permian Yeso evaporitic β€” calcareous and evaporitic) β€” Texas Hidalgo County Rio Grande Chihuahuan Desert calcareous-evaporitic watershed produces hard water at 189 mg/L with TDS 451.2 mg/L in this Hidalgo County Texas city.

Other Texas Water Reports

Frequently Asked Questions

Is Alton's water safe to drink?
Yes. Alton's water meets all federal safety standards. The hardness is 189 mg/L (Very Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Alton?
At 189 mg/L (Very Hard), Alton's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 25%.
How does Alton compare to the USA average?
The USA national average is 150 mg/L. Alton at 189 mg/L is 39 mg/L above the national average. The softest major city is Badger at just 8.5 mg/L.
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