| Lumbertonetc (RRC 969905)[5] | Pipeline system | TX | Operator |
| Lumbertonetc (RRC 969950)[5] | Pipeline system | TX | Operator |
| Lumbertonetc (RRC 969961)[5] | Pipeline system | TX | Operator |
| Lumbertonetc (natural gas)[5] | Pipeline system | TX | Operator |
| Lyondell Plant[5] | Pipeline system | TX | Operator |
| Mariner Discharge[5] | Pipeline system | TX | Operator |
| Marshall 10 Inch[5] | Pipeline system | TX | Operator |
| Matador[5] | Pipeline system | TX | Operator |
| McGrede Gathering Discharge[5] | Pipeline system | TX | Operator |
| McGrede Gathering Discharge (RRC 351680)[5] | Pipeline system | TX | Operator |
| McGrede Gathering Discharge (RRC 967757)[5] | Pipeline system | TX | Operator |
| McGrede Gathering Discharge (crude oil)[5] | Pipeline system | TX | Operator |
| McLeod System[5] | Pipeline system | TX | Operator |
| Merten Station Discharge[5] | Pipeline system | TX | Operator |
| Mi Vida To Halley Junction[5] | Pipeline system | TX | Operator |
| Midkiff Terminal Discharge[5] | Pipeline system | TX | Operator |
| Midland[5] | Pipeline system | TX | Operator |
| Midland (RRC 00196685)[5] | Pipeline system | TX | Operator |
| Midland (RRC 00204037)[5] | Pipeline system | TX | Operator |
| Midland (RRC 00227627)[5] | Pipeline system | TX | Operator |
| Midland (RRC 204036)[5] | Pipeline system | TX | Operator |
| Midland (RRC 231858)[5] | Pipeline system | TX | Operator |
| Midland (RRC 365228)[5] | Pipeline system | TX | Operator |
| Midland (RRC 368666)[5] | Pipeline system | TX | Operator |
| Midland (RRC 375916)[5] | Pipeline system | TX | Operator |
| Midland (RRC 375937)[5] | Pipeline system | TX | Operator |
| Midland (RRC 376195)[5] | Pipeline system | TX | Operator |
| Midland (RRC 394668)[5] | Pipeline system | TX | Operator |
| Midland (RRC 394670)[5] | Pipeline system | TX | Operator |
| Midland (RRC 394680)[5] | Pipeline system | TX | Operator |
| Midland (RRC 397093)[5] | Pipeline system | TX | Operator |
| Midland (RRC 397094)[5] | Pipeline system | TX | Operator |
| Midland (RRC 446431)[5] | Pipeline system | TX | Operator |
| Midland (RRC 697818)[5] | Pipeline system | TX | Operator |
| Midland (RRC 964510)[5] | Pipeline system | TX | Operator |
| Midland (RRC 964523)[5] | Pipeline system | TX | Operator |
| Midland (RRC 964550)[5] | Pipeline system | TX | Operator |
| Midland (RRC 967645)[5] | Pipeline system | TX | Operator |
| Midland (RRC 970017)[5] | Pipeline system | TX | Operator |
| Midland (RRC 970308)[5] | Pipeline system | TX | Operator |
| Midland (crude oil)[5] | Pipeline system | TX | Operator |
| Midland (natural gas)[5] | Pipeline system | TX | Operator |
| Midland Discharge[5] | Pipeline system | TX | Operator |
| Midland Discharge (crude oil)[5] | Pipeline system | TX | Operator |
| Midland I20 Truck Station[5] | Pipeline system | TX | Operator |
| Midland Industrial Ave Meter Site[5] | Pipeline system | TX | Operator |
| Midland Midway JCT[5] | Pipeline system | TX | Operator |
| Mission (RRC 731792)[5] | Pipeline system | TX | Operator |
| Mission (RRC 732386)[5] | Pipeline system | TX | Operator |
| Mission (RRC 732529)[5] | Pipeline system | TX | Operator |
| Mission (RRC 732606)[5] | Pipeline system | TX | Operator |
| Moncrief Gathering Discharge[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (NGL)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 963927)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 963928)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 963929)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 964773)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 964774)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 964776)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 965025)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (RRC 968179)[5] | Pipeline system | TX | Operator |
| Mont Belvieu Fractionators (refined products)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant LS[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant LS (NGL)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant LS (RRC 968087)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (NGL)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 551504)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 552354)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 960969)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 960970)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 960971)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 961589)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plant-LS NGL Mont Bel (RRC 964781)[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plantls NGL Hastings[5] | Pipeline system | TX | Operator |
| Mont Belvieu North Plantls NGL Mont Belv[5] | Pipeline system | TX | Operator |
| Mont Belvieu South Plant-LS NGL Mont Bel[5] | Pipeline system | TX | Operator |
| Mont Belvieu South Plant-LS NGL Mont Bel (NGL)[5] | Pipeline system | TX | Operator |
| Mont Belvieu South Plantls NGL Mont Belv[5] | Pipeline system | TX | Operator |
| Murvaul Gas Gathering[5] | Pipeline system | TX | Operator |
| Nederland[5] | Pipeline system | TX | Operator |
| Net Metro[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 00197617)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 00197618)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 00224934)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 00224935)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 332069)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 630182)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 632575)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 632578)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 632675)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 632695)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 632719)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 632720)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 960133)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 960385)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 964073)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 965287)[5] | Pipeline system | TX | Operator |
| Net Metro (RRC 966320)[5] | Pipeline system | TX | Operator |