9 Va. Admin. Code § 25-280-50
| CONSTITUENT | CONCENTRATION | |||
|---|---|---|---|---|
| Coastal Plain | Piedmont & Blue Ridge | Valley & Ridge | Cumberland Plateau | |
| pH | 6.5-9 | 5.5-8.5 | 6-9 | 5-8.5 |
| Ammonia Nitrogen | 0.025 mg/l | 0.025 mg/l | 0.025 mg/l | 0.025 mg/l |
| Nitrite Nitrogen | 0.025 mg/l | 0.025 mg/l | 0.025 mg/l | 0.025 mg/l |
| Nitrate Nitrogen | 5 mg/l | 5 mg/l | 5 mg/l | 0.5 mg/l |
§ 62.1-44.15 of the Code of Virginia.
Derived from Virginia Register Volume 20, Issue 9, eff. February 12, 2004.