δ18O and δ2H measured in tap waters from France and neighbouring countries

The database contains δ¹⁸O and δ²H in tap waters from France and neighbouring countries (original data:Daux et al., 2021), in precipitation, tap water or river water in Belgium, Deutschland, Great Britain, Italy, Netherland, Spain and Switzerland (already published data; references below), and modelled in precipitation by ECHAM6-wiso (original data: Daux et al., 2021).  

Analyses:

• Performed with Picarro L2130-I wavelength-scanned cavity ring-down spectroscopy instrument (Picarro Inc, Sunnyvale, CA, USA)
• Sample values reported using the δ notation where δ = R_sample/R_standard -1, R being ¹⁸O/¹⁶O or ²H/¹H
• Reference : VSMOW water standard
• Analytical precision: 0.20‰ (1s) for oxygen and 0.7 ‰ (1s) for hydrogen 

References for precipitation and river waters:

• Meuse river water in Belgium (Brussel): De Bondt, K. et al. Potential and limits of stable isotopes (δ18O and δD) to detect parasitic water in sewers of oceanic climate cities. J. Hydrol. Reg. Stud. 18, 119–142 (2018).
• Precipitation in Deutschland: Stumpp, C., Klaus, J. & Stichler, W. Analysis of long-term stable isotopic composition in German precipitation. J. Hydrol. 517, 351–361 (2014)
• Tap water in Deutschand: Chen, G., Schäufele, R. & Auerswald, K. Ambient Conditions and Feeding Strategy Influence δ18O of Milk Water in Cows (Bos taurus). J. Agric. Food Chem. 65, 7387–7395 (2017).
• River water in Deutschand:  Reckerth, A., Stichler, W., Schmidt, A. & Stumpp, C. Long-term data set analysis of stable isotopic composition in German rivers. J. Hydrol. 552, 718–731 (2017).
• Tap water in England: Darling, W. G. et al. The O and H stable isotope composition of freshwaters in the British Isles . 2. Surface waters and groundwater. Hydrology and Earth System Sciences 7, 183-195 (2003)
• Precipitation in Switzerland and Netherland: IAEA/WMO, 2019. GNIP database