Underground source of drinking water

Underground source of drinking water means an aquifer or its portion which:
(1) Supplies any public water system; or
(2) Contains a sufficient quantity of ground water to supply a public water system; and
(i) Currently supplies drinking water for human consumption; or
(ii) Contains fewer than 10,000 milligrams of total dissolved solids per liter.

Source

40 CFR § 191.22

---

Scoping language

Unless otherwise indicated in this subpart, all terms have the same meaning as in subparts A and B of this part.

---

Is this correct? or