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
01310740 04213500 01304200 01311143 01304057 01304650 04231600 01303152 01304562 01355475 0135749950 01518700 01427510 0135980207 01427207 404028073384601 01376520 01359165 01433500 01354330 01302020 01376269 01374019 01376307 01342732 01372043 04236000 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.