Hard water in Brownsville, TX
Reported by Brownsville Public Utilities Board · 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 Brownsville has about 211 mg/L of hardness, which is 12.3 grains per gallon. On the USGS scale that counts as very hard. The number comes from Brownsville Public Utilities Board, dated September 2025. Reports for this system disagree, with values from 211 to 259 mg/L.
At 211 mg/L, Brownsville is 99 mg/L above the typical Texas figure of 112. Of the 10 nearest cities we track, 7 have softer water and 3 have harder. The range nearby runs from 149 mg/L in La Feria to 228 in Harlingen.
What 211 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 211 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 = 2,774 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Brownsville's water system
No health-based violations since 2016
Serves about 201,249 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 Brownsville water hard?
Yes. It measures about 211 mg/L (12.3 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Brownsville in grains per gallon?
About 12.3 gpg. One grain per gallon equals 17.1 mg/L, so 211 mg/L divided by 17.1 gives 12.3.
What size water softener do I need in Brownsville?
For 3 people using 75 gallons each per day, 12.3 gpg works out to about 2,774 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Brownsville water system had EPA violations?
EPA records show no health-based violations for Brownsville Public Utilities Board since 2016.
Nearby cities
- Cameron Park217 mg/LVery hard
- Los Fresnos181 mg/LVery hard
- Port Isabel210 mg/LVery hard
- San Benito224 mg/LVery hard
- Harlingen228 mg/LVery hard
- La Feria149 mg/LHard
- Mercedes166 mg/LHard
- Progreso173 mg/LHard
- Weslaco164 mg/LHard
- Mila Doce161 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, September 22, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.