Okmulgee Water Hardness & Quality Report (2026)
Water Hardness
12.2 grains per gallon
Source
reservoir
pH Level
8.2
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
418.9 mg/L
Est. Daily Cost
$0.56
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 Okmulgee, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Okmulgee | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.7 yrs | 8.5 yrs | -68% |
| Washing Machine | 5.9 yrs | 12 yrs | -51% |
| Water Heater | 7.3 yrs | 15 yrs | -51% |
Regional Water Comparison
How Okmulgee compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Okmulgee, Oklahoma | 208.5 mg/L | 4.2 ppt | 🔴 Very Hard | reservoir |
| Bixby, Oklahoma | 125 mg/L | 3.1 ppt | 🟠 Hard | reservoir |
| Glenpool, Oklahoma | 330 mg/L | 5.9 ppt | 🔴 Very Hard | reservoir |
| Jenks, Oklahoma | 256 mg/L | 4.9 ppt | 🔴 Very Hard | reservoir |
| Sapulpa, Oklahoma | 371.5 mg/L | 6.4 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Okmulgee compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Okmulgee | 208.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Okmulgee's Water Unique?
Local geology and source profile
Okmulgee, Oklahoma, in Okmulgee County — the Okmulgee County seat adjacent to Henryetta on Lake Okmulgee in east-central Oklahoma — receives its water from the City of Okmulgee Water, drawing from Lake Okmulgee (Okmulgee County) through the east-central Oklahoma distribution.
The hard 208.5 mg/L hardness and TDS of 418.9 mg/L reflect the east-central Oklahoma Okmulgee County supply's hard calcareous character — the Pennsylvanian McAlester Formation calcareous and Mississippian Caney Shale produce hard water typical of the Ouachita Mountains transition communities in east-central Oklahoma (compare Elk City OK: 264/712 in Beckham County harder on the North Fork Red River supply; Okmulgee moderately hard from the Lake Okmulgee Pennsylvanian draw). The Lake Okmulgee watershed at Okmulgee County — Pennsylvanian McAlester Formation (calcareous — primary hardness contributor), Mississippian Caney Shale (slightly calcareous — secondary contributor), and Quaternary Ouachita alluvium (calcareous — TDS contributor).
At 208.5 mg/L with TDS 419, Okmulgee's water is hard. A water softener is recommended to prevent scale buildup. A reverse osmosis system is advisable for drinking water. The PFAS level of 4.2 ppt warrants a certified drinking water filter — the Okmulgee County east-central Oklahoma industrial corridor contribute to Okmulgee's readings.
Geology & Source: Okmulgee in Okmulgee County is served by City of Okmulgee Water drawing from Lake Okmulgee — the Lake Okmulgee watershed drains Pennsylvanian McAlester Formation (calcareous) and Mississippian Caney Shale (slightly calcareous) — OK Okmulgee County Lake Okmulgee Pennsylvanian calcareous supply produces hard water at 208.5 mg/L with TDS 418.9 mg/L.