Greenville Water Hardness & Quality Report (2026)
Water Hardness
21.8 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
1115.3 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 Greenville, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Greenville | 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 Greenville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Greenville, Texas | 373.5 mg/L | 11 ppt | 🔴 Very Hard | mixed |
| Rockwall, Texas | 367.5 mg/L | 10.8 ppt | 🔴 Very Hard | mixed |
| Terrell, Texas | 327.5 mg/L | 10 ppt | 🔴 Very Hard | mixed |
| Wylie, Texas | 256.5 mg/L | 8.5 ppt | 🔴 Very Hard | mixed |
| McKinney, Texas | 320.5 mg/L | 9.8 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Greenville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Greenville | 373.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Greenville's Water Unique?
Local geology and source profile
Greenville, Texas, the Hunt County seat — a major northeast Texas Blackland Prairie city (Greenville is the Hunt County seat — one of the most historically significant cities in northeast Texas; Greenville has a complex racial history (Greenville was once infamously known for a banner hung on its main street that read 'The Blackest Land, The Whitest People' — a slogan that reflected the city's Blackland Prairie agricultural wealth and its deeply racist social system in the early 20th century; this banner was removed and the slogan eventually became a source of civic shame; Greenville has worked to reckon with and move beyond this history)); Greenville is home of Hunt Regional Medical Center (the primary healthcare facility for Hunt County and surrounding northeast Texas communities) and is an important northeast Texas manufacturing and distribution center (L3 Technologies (formerly L3 Communications) has a major facility in Greenville — the Greenville L3 plant is one of the most important defense electronics manufacturing facilities in Texas), a diverse Hunt County community with a significant African-American, Hispanic-American, and agricultural heritage working-class to middle-class population — draws its municipal water supply from Lake Tawakoni and local wells via the City of Greenville Water Division. Water hardness in Greenville measures 373.5 mg/L — classified as extremely hard.
Greenville's extreme hardness reflects the northeast Texas Hunt County Blackland Prairie chalk and limestone's highly calcareous character. The Austin Chalk and Woodbine Formation aquifers and surface water at Greenville carry very high dissolved calcium; no softening applied, producing the extreme 373.5 mg/L.
At 373.5 mg/L, Greenville residents face severe hard water challenges. Daily descaling, water softeners, and appliance protection are essential. City of Greenville Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Mixed supply from the Lake Tawakoni and groundwater via the City of Greenville Water Division — the Hunt County northeast Texas Greenville corridor (Cretaceous calcareous Austin Chalk and Woodbine Formation — the extremely calcareous northeast Texas Hunt County Blackland Prairie chalk and limestone; no softening); extremely hard at 373.5 mg/L in Hunt County.