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2. EPANET - Wikipedia

   en.wikipedia.org/wiki/EPANET

   The modeling provides information such as flows in pipes, pressures at junctions, propagation of a contaminant, chlorine concentration, water age, and even alternative scenario analysis. This helps to compute pumping energy and cost and then model various types of valves, including shutoffs, check pressure regulating and flow control.

3. Electrical resistivity measurement of concrete - Wikipedia

   en.wikipedia.org/wiki/Electrical_resistivity...

   Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration. ASTM Standard C1202-10. Standard Test Method for Surface Resistivity of Concrete's Ability to Resist Chloride Ion Penetration. Washington, D.C., USA: American Association of State Highway and Transportation Officials. 2011. AASHTO TP 95.

4. pH meter - Wikipedia

   en.wikipedia.org/wiki/PH_meter

   A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2] The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, and so the pH meter is sometimes referred to as a "potentiometric pH meter".

5. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   When any of these pool chemicals are used, it is very important to keep the pH of the pool in the range 7.2 to 7.8 – according to the Langelier Saturation Index, or 7.8 to 8.2 – according to the Hamilton Index; higher pH drastically reduces the sanitizing power of the chlorine due to reduced oxidation-reduction potential (ORP), while lower ...

6. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   When atmospheric carbon dioxide (CO 2), or carbonate ions (HCO − 3, CO 2− 3 dissolved in water) diffuse into concrete from its external surface, they react with calcium hydroxide (portlandite, Ca(OH) 2) and the pH of the concrete pore water progressively decreases from 13.5 – 12.5 to 8.5 (pH of water in equilibrium with calcite).

7. WELL Building Standard - Wikipedia

   en.wikipedia.org/wiki/WELL_Building_Standard

   For 2 points, the project needs pre-testing water quality on the farthest water dispenser for every 10 floors such as turbidity, coliform bacteria, pH, total dissolved solids (TDS), chlorine, residual (free) chlorine, arsenic, lead, copper, nitrate, benzene at least one month before Performance Verification and monitoring piped water that ...