Its from a rural water supply. I test daily using the 6 way strips from walmart. I just used 1 its 200 for Total Hardness, Free chlorine/ Bromine 10/20, ph 8.4, Total Alkalinity 10 and cyanuric acid is 150. Ive always had a higher and Alkalinity but this is the first time it went green. Ive stirred it once since this morning as it had all settled.