9VAC25-280-50. Ground water standards applicable by physiographic province

CONSTITUENT CONCENTRATION CONSTITUENT CONCENTRATION Coastal Plain Piedmont & Blue Ridge Valley & Ridge Cumberland Plateau Coastal Plain Piedmont & Blue Ridge Valley & Ridge Cumberland Plateau pH 6.5-9 5.5-8.5 6-9 5-8.5 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 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 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 Nitrate Nitrogen 5 mg/l 5 mg/l 5 mg/l 0.5 mg/l