Cell towers in Castelsarrasin (Tarn-et-Garonne)

2 water towers and 8 pylons and 1 church or religious building carry the commune's antennas.

Place names on the register include Couvent des Carmes, Terre Blanche, Mallaurens, Malhaurens Nord, Le Riou Tort and Pordegui Est.

The commune owns 2 of the 11 masts, Totem owns 5.

2016 was the busiest year, with 17 new systems, most of them 4G. Free Mobile switched on the first 5G here in December 2020; Orange followed in August 2022, SFR followed in December 2022. The oldest transmitter still listed here goes back to 1998.

10 systems were switched on in the past 12 months. Approved additions not yet in service are pending on 2 existing masts, for example Bouygues Telecom (5G 3.5 GHz) at 353 Chemin de Roussiat and Orange (4G 700 MHz) at Le Riou Tort. 5 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The highest support stands 63 m at Pordegui Est (water tower). The median height of measured supports is 33 m.

Of the 11 masts in the commune, Orange is the only carrier on 6 masts.

3.5 GHz 5G is declared by Orange on all 6 masts, Free Mobile on 3 of its 4 masts, SFR on all 3 masts and Bouygues Telecom on 2 of its 3 masts.

Supports leave a gap of about 3 km to the north of the centre.

Montauban lies 20 km to the east and has 34 masts, more than here.

14,343 residents over 77 km²: supports are mostly pylons, not rooftops. It is part of the CC Terres des Confluences intercommunal grouping.

Source: operator declarations to ANFR, as of October 2026. Projects that are only approved are left out of the totals.