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Plants facing new discharge limits — by state and pollutant

In Virginia: 52 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Dec 1, 2026 and Oct 1, 2030 (131 limits); 13 of them reported a median above that limit between Oct 1, 2025 and Sep 30, 2026. EPA's file of Oct 16, 2026.

By state: all · IA 204 · PA 172 · LA 165 · OH 134 · MS 68 · AR 58 · TX 57 · MI 53 · GA 52 · VA 52 · MD 48 · NJ 35 · IN 31 · SC 23 · KS 21 · MN 21 · NY 21 · MO 20 · WV 17 · OR 16 · IL 14 · FL 10 · NE 9 · OK 8 · TN 8 · CO 7 · UT 7 · NM 6 · CA 5 · SD 5 · CT 3 · ID 3 · ME 2 · WI 2 · AL 1 · DC 1 · KY 1 · MT 1 · NH 1 · PR 1 · VT 1 · WA 1

By pollutant: Nitrogen, ammonia total [as N] 33 · Copper, total recoverable 10 · Zinc, total recoverable 7 · Chlorine, total residual 2 · TU Static Renewal 7-Day Chronic Ceriodaphnia dubia 2 · TU Static Renewal 7-Day Chronic Pimphales promelas 2 · Chloride [as Cl] 1 · Chlorine produced oxidants 1 · pH 1 · Phosphorus, total [as P] 1 · Xylene [mix of m+o+p] 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
Kenbridge TownVA0026239VASewage plant.6 MGDNitrogen, ammonia total [as N]monthly average 1.21 mg/L (Jan–Apr), tighterMar 1, 20273.3 mg/L (3 values)2.73×
Gloucester CountyVA0078778VAIndustrial—Chloride [as Cl]monthly average 360 mg/L, tighterMay 1, 20275017 mg/L (11 values)13.9×
Nelson County Service AuthorityVA0089729VASewage plant.22 MGDCopper, total recoverablemaximum weekly average 15 ug/L, newMay 1, 202719.6 ug/L (3 values)1.31×
Pilot Travel Centers LLCVA0092657VAIndustrial—Nitrogen, ammonia total [as N]daily maximum 1 mg/L, newDec 1, 202796.1 mg/L (3 values)96.1×
Pilot Travel Centers LLCVA0092657VAIndustrial—Nitrogen, ammonia total [as N]monthly average 1 mg/L, newDec 1, 202796.1 mg/L (3 values)96.1×
Pilot Travel Centers LLCVA0092762VAIndustrial—Nitrogen, ammonia total [as N]daily maximum 0.33 mg/L, newJan 1, 20287.33 mg/L (3 values)22.2×
Pilot Travel Centers LLCVA0092762VAIndustrial—Nitrogen, ammonia total [as N]monthly average 0.33 mg/L, newJan 1, 20287.33 mg/L (3 values)22.2×
Pittsylvania County SchoolsVA0027693VASewage plant.012 MGDNitrogen, ammonia total [as N]monthly average 1.6 mg/L, tighterFeb 1, 20282.8 mg/L (9 values)1.75×
Hopewell CityVA0066630VASewage plant, major50 MGDNitrogen, ammonia total [as N]monthly average 2.32 mg/L, tighterDec 1, 20286.44 mg/L (11 values)2.78×
Hopewell CityVA0066630VASewage plant, major50 MGDNitrogen, ammonia total [as N]daily maximum 4.8 mg/L, tighterDec 1, 202811.33 mg/L (11 values)2.36×
Hopewell CityVA0066630VASewage plant, major50 MGDNitrogen, ammonia total [as N]monthly average 308 kg/d, tighterDec 1, 2028575 kg/d (11 values)1.87×
Hopewell Power Generation LLCVA0079502VAIndustrial—Chlorine, total residualmaximum 19 ug/L, tighterMar 1, 202980 ug/L (11 values)4.21×
Hopewell Power Generation LLCVA0079502VAIndustrial—Chlorine, total residualmonthly average 9.4 ug/L, tighterMar 1, 202930 ug/L (11 values)3.19×
Lyon Shipyard & Fabrication, LLCVA0089168VAIndustrial—Copper, total recoverablemaximum 14 ug/L, newApr 1, 2029283 ug/L (3 values)20.2×
Lyon Shipyard & Fabrication, LLCVA0089168VAIndustrial—Zinc, total recoverablemaximum 130 ug/L, newApr 1, 2029533 ug/L (3 values)4.1×
Metro Machine Corp.VA0073091VAIndustrial—Copper, total recoverablemaximum 32.6 ug/L, newJul 1, 2029578 ug/L (3 values)17.7×
Metro Machine Corp.VA0073091VAIndustrial—Zinc, total recoverablemaximum 180 ug/L, newJul 1, 20291220 ug/L (3 values)6.78×
Orange County Public SchoolsVA0060330VASewage plant.0047 MGDNitrogen, ammonia total [as N]monthly average 1.3 mg/L, tighterNov 1, 20291.76 mg/L (9 values)1.35×
Orange County Public SchoolsVA0060330VASewage plant.0047 MGDNitrogen, ammonia total [as N]weekly average 1.3 mg/L, tighterNov 1, 20291.76 mg/L (9 values)1.35×
PC Oak Village MHC LLCVA0072389VAIndustrial.015 MGDNitrogen, ammonia total [as N]monthly average 2 mg/L, tighterMay 1, 20304.5 mg/L (3 values)2.25×
PC Oak Village MHC LLCVA0072389VAIndustrial.015 MGDNitrogen, ammonia total [as N]maximum weekly average 2 mg/L, tighterMay 1, 20304.5 mg/L (3 values)2.25×
Middletown TownVA0020982VASewage plant.6 MGDNitrogen, ammonia total [as N]monthly average 1.6 mg/L (Jan–May), tighterOct 1, 20302.88 mg/L (5 values)1.8×
Middletown TownVA0020982VASewage plant.6 MGDNitrogen, ammonia total [as N]maximum weekly average 2.7 mg/L (Jan–May), tighterOct 1, 20304 mg/L (5 values)1.48×
Leisure Capital CorporationVA0076678VAIndustrial.1 MGDCopper, total recoverablemonthly average 8.7 ug/L, tighterDec 1, 20265.1 ug/L (5 values)0.586×
Leisure Capital CorporationVA0076678VAIndustrial.1 MGDCopper, total recoverableweekly average 8.7 ug/L, tighterDec 1, 20265.1 ug/L (5 values)0.586×
Hampton Roads Sanitation DistrictVA0026263VASewage plant.1 MGDNitrogen, ammonia total [as N]monthly average 2.91 mg/L (May–Oct), tighterDec 1, 20260.07 mg/L (5 values)0.0241×
Hampton Roads Sanitation DistrictVA0026263VASewage plant.1 MGDNitrogen, ammonia total [as N]monthly average 6.79 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighterDec 1, 20260.09 mg/L (6 values)0.0133×
Pilot Travel Centers LLCVA0089214VAIndustrial—Nitrogen, ammonia total [as N]maximum 1.9 mg/L (Jun–Nov), tighterJan 1, 20270.29 mg/L (5 values)0.153×
Pilot Travel Centers LLCVA0089214VAIndustrial—Nitrogen, ammonia total [as N]monthly average 1.9 mg/L (Jun–Nov), tighterJan 1, 20270.29 mg/L (5 values)0.153×
Pilot Travel Centers LLCVA0089214VAIndustrial—Nitrogen, ammonia total [as N]maximum 2.9 mg/L (Jan, Feb, Mar, Apr, May, Dec), tighterJan 1, 20270.1 mg/L (5 values, 3 below detection)—
Pilot Travel Centers LLCVA0089214VAIndustrial—Nitrogen, ammonia total [as N]monthly average 2.9 mg/L (Jan, Feb, Mar, Apr, May, Dec), tighterJan 1, 20270.1 mg/L (5 values, 3 below detection)—
Lighthouse Academia Group, IncVA0093149VAIndustrial.004 MGDNitrogen, ammonia total [as N]monthly average 5.2 mg/L, tighterFeb 1, 2027under 3 values—
Lighthouse Academia Group, IncVA0093149VAIndustrial.004 MGDNitrogen, ammonia total [as N]weekly average 5.2 mg/L, tighterFeb 1, 2027under 3 values—
Nelson County Service AuthorityVA0089729VASewage plant.22 MGDCopper, total recoverablemonthly average 15 ug/L, newMay 1, 2027under 3 values—
Christian Church (Dscpls. of Christ) in VirginiaVA0027952VAIndustrial.01 MGDNitrogen, ammonia total [as N]monthly average 6.7 mg/L, newJun 1, 2027under 3 values—
Christian Church (Dscpls. of Christ) in VirginiaVA0027952VAIndustrial.01 MGDNitrogen, ammonia total [as N]maximum weekly average 6.7 mg/L, newJun 1, 2027under 3 values—
King George County Service AuthorityVA0070106VASewage plant.12 MGDCopper, total recoverablemonthly average 5 ug/L, newAug 1, 2027under 3 values—
King George County Service AuthorityVA0070106VASewage plant.12 MGDCopper, total recoverableweekly average 5 ug/L, newAug 1, 2027under 3 values—
King George County Service AuthorityVA0070106VASewage plant.12 MGDZinc, total recoverablemonthly average 48 ug/L, newAug 1, 2027under 3 values—
King George County Service AuthorityVA0070106VASewage plant.12 MGDZinc, total recoverableweekly average 48 ug/L, newAug 1, 2027under 3 values—
Bath County Service AuthorityVA0073156VASewage plant.05 MGDNitrogen, ammonia total [as N]maximum weekly average 6.4 mg/L, tighterSep 1, 20270.5 mg/L (10 values)0.0781×
Bath County Service AuthorityVA0073156VASewage plant.05 MGDNitrogen, ammonia total [as N]monthly average 4.3 mg/L, tighterSep 1, 20270.25 mg/L (10 values)0.0581×
VDOT - MainVA0023141VASewage plant.01 MGDNitrogen, ammonia total [as N]monthly average 1.77 mg/L, newNov 1, 20270.2 mg/L (7 values)0.113×
VDOT - MainVA0023141VASewage plant.01 MGDNitrogen, ammonia total [as N]weekly average 1.77 mg/L, newNov 1, 20270.2 mg/L (7 values)0.113×
VDOC - Central RegionVA0066460VAIndustrial.3 MGDNitrogen, ammonia total [as N]maximum weekly average 1.98 mg/L, newNov 1, 20270.16 mg/L (9 values)0.0808×
VDOC - Central RegionVA0066460VAIndustrial.3 MGDNitrogen, ammonia total [as N]monthly average 1.47 mg/L, newNov 1, 20270.07 mg/L (9 values)0.0476×
King George County Service AuthorityVA0089338VASewage plant.375 MGDZinc, total recoverablemonthly average 109 ug/L, newNov 1, 2027under 3 values—
King George County Service AuthorityVA0089338VASewage plant.375 MGDZinc, total recoverableweekly average 109 ug/L, newNov 1, 2027under 3 values—
Pilot Travel Centers LLCVA0092657VAIndustrial—Xylene [mix of m+o+p]daily maximum 33 ug/L, newDec 1, 20278.8 ug/L (3 values, 1 below detection)0.267×
Pilot Travel Centers LLCVA0092657VAIndustrial—Xylene [mix of m+o+p]monthly average 33 ug/L, newDec 1, 20278.8 ug/L (3 values, 1 below detection)0.267×
U.S. ArmyVA0091766VAFederal—Copper, total recoverabledaily maximum 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverablemonthly average 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverabledaily maximum 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverablemonthly average 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverabledaily maximum 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverablemonthly average 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverabledaily maximum 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverablemonthly average 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverabledaily maximum 6.2 ug/L, newDec 1, 2027under 3 values—
U.S. ArmyVA0091766VAFederal—Copper, total recoverablemonthly average 6.2 ug/L, newDec 1, 2027under 3 values—
NB Sandy's MHC LLCVA0088811VAIndustrial.04 MGDNitrogen, ammonia total [as N]monthly average 1.4 mg/L (Jun–Nov), tighterJan 1, 20280.68 mg/L (5 values)0.486×
NB Sandy's MHC LLCVA0088811VAIndustrial.04 MGDNitrogen, ammonia total [as N]monthly average 2.4 mg/L (Jan, Feb, Mar, Apr, May, Dec), tighterJan 1, 20280.87 mg/L (6 values)0.362×
DMHMRSASVA0029475VASewage plant—Nitrogen, ammonia total [as N]monthly average 19.7 mg/L, newJan 1, 2028under 3 values—
DMHMRSASVA0029475VASewage plant—Nitrogen, ammonia total [as N]weekly average 19.7 mg/L, newJan 1, 2028under 3 values—
Hampton Roads Sanitation DistrictVA0081272VAIndustrial, major20 MGDPhosphorus, total [as P]annual average 0.3 mg/L, tighterJan 1, 2028under 3 values—
NB Sandy's MHC LLCVA0088811VAIndustrial.04 MGDNitrogen, ammonia total [as N]weekly average 2.1 mg/L (Jun–Nov), tighterJan 1, 2028under 3 values—
NB Sandy's MHC LLCVA0088811VAIndustrial.04 MGDNitrogen, ammonia total [as N]weekly average 3.5 mg/L (Jan, Feb, Mar, Apr, May, Dec), tighterJan 1, 2028under 3 values—
Cascades Holding US Inc.VA0077763VAIndustrial—TU Static Renewal 7-Day Chronic Ceriodaphnia dubiamaximum 7.69 tox chronic, newFeb 1, 2028under 3 values—
Cascades Holding US Inc.VA0077763VAIndustrial—TU Static Renewal 7-Day Chronic Pimphales promelasmaximum 7.69 tox chronic, newFeb 1, 2028under 3 values—
Craig New Castle Public Service AuthorityVA0064599VASewage plant.175 MGDNitrogen, ammonia total [as N]monthly average 13 mg/L, newMar 1, 20288.5 mg/L (10 values)0.654×
Craig New Castle Public Service AuthorityVA0064599VASewage plant.175 MGDNitrogen, ammonia total [as N]monthly maximum 16 mg/L, newMar 1, 20289 mg/L (10 values)0.562×
Hanover CountyVA0024899VASewage plant, major2 MGDTU Static Renewal 7-Day Chronic Pimphales promelasmaximum 5.55 tox chronic, newMar 1, 2028under 3 values—
Newport News City - Public UtilitiesVA0050032VAIndustrial—Chlorine, total residualdaily maximum 0.016 mg/L, newMar 1, 2028under 3 values—
Newport News City - Public UtilitiesVA0050032VAIndustrial—Chlorine, total residualdaily maximum 0.004 mg/L, tighterMar 1, 2028under 3 values—
Greensville County Water and Sewer AuthorityVA0092983VASewage plant.1 MGDCopper, total recoverablemonthly average 30 ug/L, newApr 1, 202817.5 ug/L (10 values)0.583×
Greensville County Water and Sewer AuthorityVA0092983VASewage plant.1 MGDCopper, total recoverableweekly average 30 ug/L, newApr 1, 202817.5 ug/L (10 values)0.583×
AdvanSix Resins & Chemicals LLCVA0005291VAIndustrial, major—Nitrogen, ammonia total [as N]monthly average 0.746 mg/L, tighterJul 1, 20280.55 mg/L (11 values)0.737×
AdvanSix Resins & Chemicals LLCVA0005291VAIndustrial, major—Nitrogen, ammonia total [as N]monthly average 382 kg/d, tighterJul 1, 2028182 kg/d (11 values)0.476×
AdvanSix Resins & Chemicals LLCVA0005291VAIndustrial, major—Nitrogen, ammonia total [as N]maximum 523 kg/d, tighterJul 1, 2028under 3 values—
AdvanSix Resins & Chemicals LLCVA0005291VAIndustrial, major—Nitrogen, ammonia total [as N]maximum 1.02 mg/L, tighterJul 1, 2028under 3 values—
Western Virginia Water AuthorityVA0025020VASewage plant, major55 MGDNitrogen, ammonia total [as N]monthly average 1 mg/L (Oct–Dec), newJul 1, 2028under 3 values—
Western Virginia Water AuthorityVA0025020VASewage plant, major55 MGDNitrogen, ammonia total [as N]monthly average 1.8 mg/L (Jan–Mar), newJul 1, 2028under 3 values—
Western Virginia Water AuthorityVA0025020VASewage plant, major55 MGDNitrogen, ammonia total [as N]maximum weekly average 1.4 mg/L (Oct–Dec), newJul 1, 2028under 3 values—
Western Virginia Water AuthorityVA0025020VASewage plant, major55 MGDNitrogen, ammonia total [as N]weekly average 2.4 mg/L (Jan–Mar), newJul 1, 2028under 3 values—
Loudoun County Sanitation AuthorityVA0060500VASewage plant.058 MGDNitrogen, ammonia total [as N]monthly average 6.6 mg/L (Jun–Nov), tighterAug 1, 20282.6 mg/L (3 values)0.394×
Loudoun County Sanitation AuthorityVA0060500VASewage plant.058 MGDNitrogen, ammonia total [as N]weekly average 9.7 mg/L (Jun–Nov), tighterAug 1, 20282.74 mg/L (3 values)0.282×
Lovettsville TownVA0023183VASewage plant.375 MGDNitrogen, ammonia total [as N]weekly average 0.89 mg/L, tighterSep 1, 20280.3 mg/L (11 values)0.337×
Lovettsville TownVA0023183VASewage plant.375 MGDNitrogen, ammonia total [as N]monthly average 0.67 mg/L, tighterSep 1, 20280.2 mg/L (11 values)0.299×
Bowling Green TownVA0020737VASewage plant.25 MGDNitrogen, ammonia total [as N]monthly average 1.4 kg/d, newNov 1, 2028under 3 values—
Bowling Green TownVA0020737VASewage plant.25 MGDNitrogen, ammonia total [as N]monthly average 0.55 mg/L, newNov 1, 2028under 3 values—
Bowling Green TownVA0020737VASewage plant.25 MGDNitrogen, ammonia total [as N]weekly average 0.73 mg/L, newNov 1, 2028under 3 values—
Bowling Green TownVA0020737VASewage plant.25 MGDNitrogen, ammonia total [as N]weekly average 1.5 kg/d, newNov 1, 2028under 3 values—
Fauquier County Water and Sanitation AuthorityVA0076805VASewage plant, major2 MGDTU Static Renewal 7-Day Chronic Ceriodaphnia dubiamonthly average 6.14 tox chronic, newDec 1, 2028under 3 values—
Fork Union SNF Operations LLCVA0081639VAIndustrial.02 MGDpHmaximum 8 SU, tighterApr 1, 20297.9 SU (11 values)0.988×
Fork Union SNF Operations LLCVA0081639VAIndustrial.02 MGDNitrogen, ammonia total [as N]monthly average 1.5 mg/L (Jan, Feb, Mar, Apr, May, Dec), newApr 1, 2029under 3 values—
Fork Union SNF Operations LLCVA0081639VAIndustrial.02 MGDNitrogen, ammonia total [as N]monthly average 1 mg/L (Jun–Nov), newApr 1, 2029under 3 values—
Fork Union SNF Operations LLCVA0081639VAIndustrial.02 MGDNitrogen, ammonia total [as N]weekly average 1.5 mg/L (Jan, Feb, Mar, Apr, May, Dec), newApr 1, 2029under 3 values—
Fork Union SNF Operations LLCVA0081639VAIndustrial.02 MGDNitrogen, ammonia total [as N]weekly average 1 mg/L (Jun–Nov), newApr 1, 2029under 3 values—
Boydton TownVA0026247VASewage plant.86 MGDCopper, total recoverablemonthly average 33 ug/L, newJun 1, 2029under 3 values—
Boydton TownVA0026247VASewage plant.86 MGDCopper, total recoverableweekly average 33 ug/L, newJun 1, 2029under 3 values—
HSV Holiday LLCVA0088994VAIndustrial.01 MGDNitrogen, ammonia total [as N]monthly average 5.7 mg/L (Jun–Dec), tighterSep 1, 20295.005 mg/L (6 values)0.878×
HSV Holiday LLCVA0088994VAIndustrial.01 MGDNitrogen, ammonia total [as N]maximum weekly average 5.7 mg/L (Jun–Dec), tighterSep 1, 20295.005 mg/L (6 values)0.878×
NB Blue Ridge LLCVA0088943VAIndustrial.018 MGDNitrogen, ammonia total [as N]monthly average 1.5 mg/L, tighterNov 1, 20290.27 mg/L (11 values)0.18×
NB Blue Ridge LLCVA0088943VAIndustrial.018 MGDNitrogen, ammonia total [as N]weekly average 1.5 mg/L, tighterNov 1, 20290.25 mg/L (10 values)0.167×
Colonna's Ship Yard, IncorporatedVA0053813VAIndustrial—Copper, total recoverablemaximum 32.6 ug/L, newDec 1, 202917 ug/L (11 values)0.521×
Colonna's Ship Yard, IncorporatedVA0053813VAIndustrial—Zinc, total recoverablemaximum 130.2 ug/L, newDec 1, 202959 ug/L (11 values)0.453×
Western Virginia Water AuthorityVA0067245VASewage plant.03 MGDNitrogen, ammonia total [as N]monthly average 9.73 mg/L (Jun–Dec), newDec 1, 20293.195 mg/L (4 values)0.328×
Western Virginia Water AuthorityVA0067245VASewage plant.03 MGDNitrogen, ammonia total [as N]maximum weekly average 9.73 mg/L (Jun–Dec), newDec 1, 20293.195 mg/L (4 values)0.328×
Southampton CountyVA0061859VASewage plant, major3.75 MGDNitrogen, ammonia total [as N]weekly average 0.8395 mg/L, newDec 1, 20290.09 mg/L (9 values)0.107×
Southampton CountyVA0061859VASewage plant, major3.75 MGDNitrogen, ammonia total [as N]monthly average 0.6253 mg/L, newDec 1, 20290.06 mg/L (9 values)0.096×
National Aeronautics and Space Administration (NASA)VA0024741VAFederal—Chlorine produced oxidantsmaximum 0.0075 mg/L, newJan 1, 2030under 3 values—
National Aeronautics and Space Administration (NASA)VA0024741VAFederal—Copper, total recoverablemaximum 6 ug/L, newJan 1, 2030under 3 values—
National Aeronautics and Space Administration (NASA)VA0024741VAFederal—Zinc, total recoverablemaximum 81 ug/L, newJan 1, 2030under 3 values—
National Aeronautics and Space Administration (NASA)VA0024741VAFederal—Chlorine produced oxidantsmaximum 0.0075 mg/L, newJan 1, 2030under 3 values—
National Aeronautics and Space Administration (NASA)VA0024741VAFederal—Copper, total recoverablemaximum 6 ug/L, newJan 1, 2030under 3 values—
National Aeronautics and Space Administration (NASA)VA0024741VAFederal—Zinc, total recoverablemaximum 81 ug/L, newJan 1, 2030under 3 values—
NB Glenwood LLCVA0068934VAIndustrial.03 MGDNitrogen, ammonia total [as N]monthly average 0.69 mg/L, tighterMar 1, 20300.13 mg/L (11 values)0.188×
NB Glenwood LLCVA0068934VAIndustrial.03 MGDNitrogen, ammonia total [as N]weekly average 0.85 mg/L, tighterMar 1, 20300.13 mg/L (11 values)0.153×
NB Black Rock LLCVA0088986VAIndustrial.04 MGDNitrogen, ammonia total [as N]monthly average 1.8 mg/L, newMar 1, 20300.2 mg/L (6 values)0.111×
NB Black Rock LLCVA0088986VAIndustrial.04 MGDNitrogen, ammonia total [as N]weekly average 1.8 mg/L, newMar 1, 20300.2 mg/L (6 values)0.111×
Luray TownVA0062642VASewage plant, major1.6 MGDNitrogen, ammonia total [as N]maximum weekly average 4 mg/L, tighterApr 1, 20300.13 mg/L (8 values)0.0325×
Luray TownVA0062642VASewage plant, major1.6 MGDNitrogen, ammonia total [as N]monthly average 3.2 mg/L, tighterApr 1, 20300.035 mg/L (8 values)0.0109×
Nottoway County Public SchoolsVA0061158VAIndustrial.0256 MGDNitrogen, ammonia total [as N]monthly average 1.9 mg/L, tighterAug 1, 20300.24 mg/L (11 values, 4 below detection)0.126×
Nottoway County Public SchoolsVA0061158VAIndustrial.0256 MGDNitrogen, ammonia total [as N]weekly average 1.9 mg/L, tighterAug 1, 20300.24 mg/L (11 values, 4 below detection)0.126×
Middletown TownVA0020982VASewage plant.6 MGDNitrogen, ammonia total [as N]monthly average 0.64 mg/L (Jun–Dec), tighterOct 1, 20300.11 mg/L (4 values)0.172×
Middletown TownVA0020982VASewage plant.6 MGDNitrogen, ammonia total [as N]weekly average 0.85 mg/L (Jun–Dec), tighterOct 1, 2030under 3 values—
Stanley TownVA0064394VASewage plant.3 MGDNitrogen, ammonia total [as N]monthly average 6.2 mg/L, newOct 1, 2030under 3 values—
Stanley TownVA0064394VASewage plant.3 MGDNitrogen, ammonia total [as N]maximum weekly average 8.3 mg/L, newOct 1, 2030under 3 values—
U.S. NavyVA0079928VAIndustrial—Zinc, total recoverablemaximum 130 ug/L, newOct 1, 2030under 3 values—
U.S. NavyVA0079928VAIndustrial—Zinc, total recoverablemaximum 130 ug/L, newOct 1, 2030under 3 values—
U.S. NavyVA0079928VAIndustrial—Zinc, total recoverablemaximum 130 ug/L, newOct 1, 2030under 3 values—

Each limit is one EPA's ICIS-NPDES file holds on the permit's current version with a begin date after today, enforceable and numeric, either on a parameter the outfall was never limited on (new) or lower than the limit in force (tighter). Today's median is the plant's own reported values for the same outfall, statistic and unit between Oct 1, 2025 and Sep 30, 2026, with how many; none is shown where most were below a detection limit. Read the permit before relying on a value.

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For programs and AI agents: a state's permits with these limits as JSON at /api/v1/permits?state=VA&upcoming=true, narrowed with &facility_type=potw or &min_flow_mgd=1; the whole list at /dmr/data/upcoming.json; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

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