Map of the Rio Grande River. Will Rogers once described the Rio Grande as âthe only river I know of that is in need of irrigating,â a prescient observation considering how fragmented this fabled river has become.
Low pH (acidic water) can also corrode metal parts of a pool system and damage the plaster finish. The State standard for pH is 7.2 â 8.0 (Recommended range 7.4â7.6). To lower the pH, muriatic (hydrochloric) acid must be added. It is advisable to add the desired amount of acid to a full (plastic) bucket of water before adding to the pool. (Acid introduced directly can stain the pool wall.) To raise the pH, soda ash (sodium carbonate) must be added. ALKALINITY Alkaline (basic) substances are present in all water. Within the 7.2â7.8 pH range, alkalinity exists as a bicarbonate material.
Rain water. Rain water is acidic, so it will naturally lower your pool and spa waterâs pH. Remember your pH should not fall below 7.2 or your water can become corrosive and cause damage to your poolâs surfaces and equipment. Pool water with low pH is also uncomfortable for swimmers, and chlorine will expend itself more rapidly.