WaterQualityWatch -- Continuous Real-Time Water Quality of Surface Water in the United States

Real-Time pH, field, in standard units

Map of , showing which states provide real-time computed water-quality data
420451121510000 14034500 11510700 14078260 11509500 11509370 420741121554001 14162500 14206950 14159500 14163000 453040123065201 14182500 452731123092100 14162200 14183020 453030122560101 14158850 14163900 14164550 14206241 453004122510301 14202980 14162450 14209710 14317450 14210000 14316460 14202650 14207200 14203500 14211720 14211010 14181500 422305121553800 453027122400000 14078250 422719121571400 11507501 142063398 420853121505501 14078240 14039320 422622122004003 420833121402000 14317600 422444121580400 422042121513100 422305121553803 452041119321500 444306122144600 420853121505500 420037121334100 421015121471800 421401121480900 441022122193200 422622122004000 14206694 14209700 421935121551200 Explanation

* Site operated on a seasonal basis or currently is not operating.
No values are available for the last 6 hours.

The "Real-time" map tracks short-term changes (over several hours) of water quality. Although the general appearance of the map changes very little from one hour to the next, individual sites may change rapidly in response to major rain events or to reservoir releases. The data used to produce this map are provisional.