Water hardness in Brownsville (Texas)
12.5 gpg very hard
Tap water in Brownsville (Texas) is very hard: 12.5 gpg (215 mg/L · 12 °dH · 21.5 °fH).
Source: Brownsville Public Utilities Board 2025 Consumer Confidence Report (2025) · data checked 2026-10-19
Range across supply zones: 77–355 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| gpg | mg/L | ||
|---|---|---|---|
| BPUB system table (supply not confirmed) | 20.6 | 352 | very hard |
| SRWA (Southmost Regional Water Authority) supply table | 4.5 | 77 | moderately hard |
Brownsville Public Utilities Board's 2025 report holds two hardness readings that disagree. One is 77.3 mg/L in the Southmost Regional Water Authority table, and the other is 352 mg/L (348 to 355) in the BPUB system table, whose supply we could not confirm. The page shows the median of 214.7 mg/L (12.6 gpg), which matches neither well. Ask BPUB which supply serves your address.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 12.5 gpg |
|---|---|
| Utility | Brownsville Public Utilities Board (BPUB) |
How Brownsville (Texas) compares
- Tap water in Brownsville (Texas) is 38 % harder than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 481 of 1372 in the United States (1 = hardest); 65 % of these cities have softer water.
- In Texas it is number 17 of 60 cities; the regional median is 8.6 gpg.
Ranking of the hardest and softest water in the United States →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Brownsville
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 12 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Brownsville (Texas) water hard or soft?
It is very hard: 215 mg/L as CaCO₃ (12.5 gpg, 12 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Brownsville (Texas) safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
How many grains per gallon is Brownsville (Texas) water?
12.5 gpg, equal to 12 °dH, 21.5 °fH or 215 mg/L calcium carbonate.
What dishwasher salt setting should I use in Brownsville (Texas)?
For 215 mg/L (12 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Brownsville (Texas)?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Brownsville Public Utilities Board 2025 Consumer Confidence Report (2025). Method: figure published by the water supplier. Brownsville Public Utilities Board 2025 Consumer Confidence Report · Outdated figure? Tell us