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
05515500 03277200 03292470 03292475 05517500 03293000 03353200 03292480 03275500 05524500 03292500 03374100 03292474 03353420 03353415 03302050 03302030 05536356 03294570 03293530 03292550 03293510 03293500 05518000 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.