Hard water in La Joya, TX
Reported by City of La Joya · June 2022
- TX typical
- 112 mg/L
- EPA health violations since 2016
- 14
- Softener for 3 people
- 24k grain
- Data
- Utility report
La Joya water measures 179 mg/L (10.5 gpg) of hardness, hard by USGS standards. The number comes from City of La Joya, dated June 2022. Reports for this system disagree, with values from 179 to 285 mg/L.
La Joya sits 67 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 3 have softer water and 7 have harder. The range nearby runs from 159 mg/L in Alton to 211 in McAllen.
What 179 mg/L means at home
Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.
Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.
Soap and detergent need a little more to lather, and soap scum shows up in the tub.
Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.
What to do about it
At 179 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 10.5 gpg = 2,356 grains a day. A 24,000-grain unit regenerates about every 10 days.
EPA record for La Joya's water system
14 health-based violations since 2016
Serves about 3,033 people from surface water.
- Health-based
- 14
- Monitoring or reporting
- 80
- Open now
- 6
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Lead and Copper Rulecorrosion control and lead sampling | 1 | 2024 | 1 open |
| Total Coliform Rulebacteria | 3 | 2018–2023 | 1 open |
| Total trihalomethanes (TTHM)a disinfection byproduct | 10 | 2018–2022 | Resolved |
Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.
Questions
Is La Joya water hard?
Yes. It measures about 179 mg/L (10.5 grains per gallon), which the USGS classes as hard.
What is the water hardness in La Joya in grains per gallon?
About 10.5 gpg. One grain per gallon equals 17.1 mg/L, so 179 mg/L divided by 17.1 gives 10.5.
What size water softener do I need in La Joya?
For 3 people using 75 gallons each per day, 10.5 gpg works out to about 2,356 grains a day. A 24,000-grain softener covers that with a regeneration about every 10 days.
Has the La Joya water system had EPA violations?
EPA records show 14 health-based violations for City of La Joya since 2016, involving Lead and Copper Rule, Total Coliform Rule, Total trihalomethanes (TTHM). There were also 80 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Penitas199 mg/LVery hard
- Salida del Sol Estates199 mg/LVery hard
- Doffing199 mg/LVery hard
- Palmview198 mg/LVery hard
- La Homa185 mg/LVery hard
- Mission177 mg/LHard
- Alton159 mg/LHard
- McAllen211 mg/LVery hard
- Hidalgo161 mg/LHard
- Pharr210 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, June 30, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.