Hard water in Hidalgo, TX
Reported by City of Hidalgo · June 2022
- TX typical
- 112 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in Hidalgo has about 161 mg/L of hardness, which is 9.4 grains per gallon. On the USGS scale that counts as hard. The number comes from City of Hidalgo, dated June 2022. Reports for this system disagree, with values from 161 to 334 mg/L.
Hidalgo sits 49 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 1 has softer water and 8 have harder. The range nearby runs from 159 mg/L in Alton to 216 in Donna.
What 161 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 161 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 × 9.4 gpg = 2,120 grains a day. A 24,000-grain unit regenerates about every 11 days.
EPA record for Hidalgo's water system
1 health-based violation since 2016
Serves about 14,800 people from groundwater.
- Health-based
- 1
- Monitoring or reporting
- 12
- Open now
- 2
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Lead and Copper Rulecorrosion control and lead sampling | 1 | 2024 | 1 open |
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 Hidalgo water hard?
Yes. It measures about 161 mg/L (9.4 grains per gallon), which the USGS classes as hard.
What is the water hardness in Hidalgo in grains per gallon?
About 9.4 gpg. One grain per gallon equals 17.1 mg/L, so 161 mg/L divided by 17.1 gives 9.4.
What size water softener do I need in Hidalgo?
For 3 people using 75 gallons each per day, 9.4 gpg works out to about 2,120 grains a day. A 24,000-grain softener covers that with a regeneration about every 11 days.
Has the Hidalgo water system had EPA violations?
EPA records show 1 health-based violation for City of Hidalgo Water System since 2016, involving Lead and Copper Rule. There were also 12 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Pharr210 mg/LVery hard
- McAllen211 mg/LVery hard
- San Juan162 mg/LHard
- Mission177 mg/LHard
- Alamo166 mg/LHard
- Palmview198 mg/LVery hard
- Alton159 mg/LHard
- Murillo161 mg/LHard
- Donna216 mg/LVery hard
- La Homa185 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, June 22, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.