Friendswood Water Hardness & Quality Report (2026)
Water Hardness
22.1 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
1136.5 mg/L
Est. Daily Cost
$1.00
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Friendswood, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Friendswood | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Friendswood compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Friendswood, Texas | 378.5 mg/L | 11.1 ppt | 🔴 Very Hard | mixed |
| Pearland, Texas | 346 mg/L | 10.4 ppt | 🔴 Very Hard | mixed |
| League City, Texas | 417.5 mg/L | 11.9 ppt | 🔴 Very Hard | mixed |
| Alvin, Texas | 194 mg/L | 7.2 ppt | 🔴 Very Hard | mixed |
| South Houston, Texas | 269 mg/L | 8.8 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Friendswood compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Friendswood | 378.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Friendswood's Water Unique?
Local geology and source profile
Friendswood, Texas, in Galveston and Harris Counties southeast of Houston — a major southeast Houston suburban community, a historically Quaker-founded community (the Society of Friends — Quakers — established Friendswood in 1895, making it one of the few Quaker-founded Texas communities), a rapidly growing and affluent southeast Houston suburb adjacent to League City and Pearland, and a diverse Galveston–Harris County community in the greater Houston area — draws its municipal water supply from the Gulf Coast Aquifer via the City of Friendswood Water Division. Water hardness in Friendswood measures 378.5 mg/L — classified as extremely hard.
Friendswood's extremely hard supply — among the hardest in Texas — reflects the Gulf Coast Aquifer's extreme calcareous hardness in southeast Houston. The Chicot and Evangeline Aquifer system at Friendswood–southeast Houston draws from: the Pleistocene–Pliocene calcareous Gulf Coast alluvial deposits (the Beaumont Clay and Montgomery Formation — calcareous marine and fluvial deposits with abundant calcareous shell hash and calcareous cement); and the Evangeline Aquifer (Pliocene–Miocene calcareous Gulf Coast sediment). The Gulf Coast Aquifer in southeast Houston is among the most calcareous aquifer zones in Texas, producing the extreme 378.5 mg/L.
At 378.5 mg/L, Friendswood residents face severe hard water challenges. Weekly descaling and appliance protection measures are strongly recommended. City of Friendswood Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Gulf Coast Aquifer (Chicot and Evangeline Aquifers) via the City of Friendswood Water Division — the Galveston–Harris County southeast Texas Gulf Coastal Plain (Pleistocene–Pliocene calcareous Gulf Coast Formation — the highly calcareous Gulf Coast Aquifer of southeast Texas; Chicot Aquifer calcareous alluvial hardness); extremely hard supply at 378.5 mg/L — reflecting the Gulf Coast Aquifer's extreme calcareous hardness in the Friendswood zone.