The domain based local pair-natural orbital CCSD method in conjunction with an improved perturbative triples correction, dubbed DLPNO-CCSD(T), can deliver results of canonical CCSD(T) quality at a significantly reduced computational cost. Recently, this method has found several uses in the zeolite field, both for the calculation of reference energies for different guest molecules interacting with zeolite clusters models, including protonated and cationexchanged systems, and to compute correction terms to energies obtained at a lower level of theory. So far, no systematic comparisons of DFT adsorption energies obtained with different approaches have been reported for emerging organic contaminants like pharmaceuticals or personal care products. This study aims to fill this gap, reporting results obtained with a total of 13 dispersion-corrected exchange-correlation (dc-XC) functionals, including five GGA-type functionals and one meta-GGA functional in conjunction with a pairwise D3 correction as well as seven vdW-DF methods. For a few adsorption complexes, a validation against DLPNO-CCSD(T) calculations is carried out in the last part, using suitably sized cluster models. This investigation is structured as follows: