TABLE 2 in Two new genera and species of the valvatiform hydrobiid snails (Caenogastropoda: Truncatelloidea: Hydrobiidae) from Morocco

TABLE 2. Measured physico-chemical parametres for the studied springs. Measurements are taken on 7 April 2022; for the spring S3: 9 April 2022. T°C: water temperature; TDS: Total Dissolved Solids; DO: Dissolved Oxygen. The preferable level of TDS in water (WHO): Good: TDS=300–600 milligrams per litre: P1, P2 and P3 unacceptable: TDS above 1200: P4 also with high conductance.
Wellswell protectionwater usePiezometric level (m)Depth (m)Opening diameter (m)T °CpHDO (mg/l)Conductivity (µS/cm)TDS (mg/l)Salinity (ppt)P1with a metal coverdrinking water and domestic use3.406.209016.018.0410.59594780.48P2rudimentary protectionagricultural irrigation use8.5018.51.4017.078.019.17173590.35P3with a metal coverdrinking water, ablution and domestic use7.16391.7017.668.2515.68334170.41P4with a metal coveragricultural and construction use10.30212.0420.487.9914.8285414251.48