وَاحْتِيَاجٍ لِعَجْنٍ لَا لِطَبْخِ مَرَقٍ، وَلِفَقْدِ آلَةٍ، وَخَوْفِ فَوْتِ صَلَاةِ جَنَازَةٍ أَوْ عِيدٍ ... وَلَيْسَ مِنَ الْعُذْرِ خَوْفُ فَوْتِ الْجُمُعَةِ وَالْوَقْتِ
Also included: needing the water for kneading necessary dough, not merely cooking broth; lacking a tool such as a rope/bucket to obtain available water; and fear of missing Janazah or Eid prayer under the stated conditions. Fear of missing Jumu'ah or merely the current daily-prayer time is not listed as an excuse for Tayammum.