Hard water in Pharr, TX
Reported by City of Pharr · September 2025
- TX typical
- 112 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in Pharr has about 210 mg/L of hardness, which is 12.3 grains per gallon. On the USGS scale that counts as very hard. The number comes from City of Pharr, dated September 2025. Reports for this system disagree, with values from 210 to 270 mg/L.
At 210 mg/L, Pharr is 98 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 8 have softer water and 2 have harder. The range nearby runs from 156 mg/L in Edinburg to 216 in Donna.
What 210 mg/L means at home
Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.
Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.
Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.
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 210 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 × 12.3 gpg = 2,761 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Pharr's water system
No health-based violations since 2016
Serves about 79,715 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 0
- Open now
- 0
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 Pharr water hard?
Yes. It measures about 210 mg/L (12.3 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Pharr in grains per gallon?
About 12.3 gpg. One grain per gallon equals 17.1 mg/L, so 210 mg/L divided by 17.1 gives 12.3.
What size water softener do I need in Pharr?
For 3 people using 75 gallons each per day, 12.3 gpg works out to about 2,761 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Pharr water system had EPA violations?
EPA records show no health-based violations for City of Pharr since 2016.
Nearby cities
- San Juan162 mg/LHard
- Alamo166 mg/LHard
- Hidalgo161 mg/LHard
- McAllen211 mg/LVery hard
- Murillo161 mg/LHard
- Mission177 mg/LHard
- Donna216 mg/LVery hard
- Edinburg156 mg/LHard
- Alton159 mg/LHard
- Palmview198 mg/LVery hard
Hardness data: TapWaterData US Water Hardness (utility report, September 3, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.