Choctaw Water Hardness & Quality Report (2026)

Choctaw, Oklahoma, in Oklahoma County — an Oklahoma County city adjacent to Midwest City and Del City east of Oklahoma City in central Oklahoma — receives its water from the City of Choctaw Water, drawing from Arcadia Lake (Oklahoma County) through the central Oklahoma distribution.

The soft 94.5 mg/L hardness and low TDS of 148.9 mg/L reflect the central Oklahoma Oklahoma County Arcadia Lake supply's soft character — the Pennsylvanian Hartshorne Formation slightly calcareous and Permian Garber Sandstone insoluble produce soft water in the Deep Fork watershed communities, softer than the Permian redbeds communities in western Oklahoma (compare Edmond OK: 91/143 in Oklahoma County comparable on the same Lake Arcadia supply; Choctaw essentially identical). The Arcadia Lake watershed — Pennsylvanian Hartshorne Formation (slightly calcareous — primary hardness contributor), Permian Garber Sandstone (insoluble — primary dilutant), and Quaternary Deep Fork alluvium (slightly calcareous — minor TDS).

At 94.5 mg/L, Choctaw's water is soft — scale forms slowly in appliances, dishwashers remain efficient, and no softening is needed. Annual descaling is appropriate. The PFAS level of 2.7 ppt is low — a certified drinking water filter is advisable — the Oklahoma County central Oklahoma urban corridor contribute to Choctaw's readings.