{"data":{"id":"us-va/9vac25-280-40","jurisdiction":"us-va","citation":"9VAC25-280-40","heading":"Ground water standards applicable statewide","body":"CONSTITUENT\n\nCONCENTRATION\n\nSodium\n\n270 mg/l\n\nFoaming Agents as methylene blue active substances\n\n0.05 mg/l\n\nPetroleum hydrocarbons\n\n1 mg/l\n\nArsenic\n\n0.05 mg/l\n\nBarium\n\n1.0 mg/l\n\nCadmium\n\n0.0004 mg/l\n\nChromium\n\n0.05 mg/l\n\nCopper\n\n1.0 mg/l\n\nCyanide\n\n0.005 mg/l\n\nLead\n\n0.05 mg/l\n\nMercury\n\n0.00005 mg/l\n\nPhenols\n\n0.001 mg/l\n\nSelenium\n\n0.01 mg/l\n\nSilver\n\nNone\n\nZinc\n\n0.05 mg/l\n\nChlorinated Hydrocarbon Insecticides\n\nAldrin/Dieldrin\n\n0.003 μg/l\n\nChlordane\n\n0.01 μg/l\n\nDDT\n\n0.001 μg/l\n\nEndrin\n\n0.004 μg/l\n\nHeptachlor\n\n0.001 μg/l\n\nHeptachlor Epoxide\n\n0.001 μg/l\n\nKepone\n\nNone\n\nLindane\n\n0.01 μg/l\n\nMethoxychlor\n\n0.03 μg/l\n\nMirex\n\nNone\n\nToxaphene\n\nNone\n\nChlorophenoxy Herbicides\n\n2,4‑D\n\n0.1 mg/l\n\nSilvex\n\n0.01 mg/l\n\nRadioactivity\n\nTotal Radium (Ra‑226 \u0026 Ra‑228)\n\n5 pCi/1\n\nRadium 226\n\n3 pCi/1\n\nGross Beta Activity*\n\n50 pCi/1\n\nGross Alpha Activity (excluding Radon \u0026 Uranium)\n\n15 pCi/1\n\nTritium\n\n20,000 pCi/l\n\nStrontium‑90\n\n8 pCi/l\n\nManmade Radioactivity ‑ Total Dose Equiv.**\n\n4 mrem/yr\n\npCi/l = picoCurie per liter\n\nmrem/yr = millirems per year\n\n*The gross beta value shall be used as a screening value only. If exceeded, the water must be analyzed to determine the presence and quantity of radionuclides to determine compliance with the tritium, strontium, and manmade radioactivity standards.\n\n**Combination of all sources should not exceed total dose equivalent of 4 mrem/year.","path":["Title 9. Environment","Agency 25. State Water Control Board","Chapter 280. Ground Water Standards"],"source_url":"https://law.lis.virginia.gov/admincode/title9/agency25/chapter280/section40/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:49:15Z","sha256":"34a666c42e604425abbccb64cdb0afc9e12170a6e5d06ae8b6b6f365bee122ef","source_id":"us-va-vac","stale":false,"prev":"us-va/9vac25-280-30","next":"us-va/9vac25-280-50"},"notice":"GroundRules: Original legal text. Not legal advice."}