Consolidated Dataset of Wastewater Ponds. Above ground wastewater pits, also known as sumps, are used in California to dispose of oil and gas wastewaters, such as flowback fluid, hydraulic fracturing and acidizing chemicals and other produced waters.
This dataset has revised the number of duplicated entries into the "number of pits" field.  Pits with the same status that were located within a 1/4 mile of eachother have been consolidated, and the field "Number_o_1" field has been revised to reflect this change.

As of 8/4/14, data published by the waterboard shows the locations of unlined, abpove ground wastewater pits (also known as ponds or sumps). These pits are used to separate oil and grease from wastewaters, or dispose of wastewaters. Wastewaters commonly contain oils and grease, boron, chlorides, bromides, VOC's, semi-VOC's, other petroleum and diesel organics; trace metals such as manganese and arsenic; as wells as naturally occuring radioactive materials. The data shows that in California there are currently 1,088 pits. 719 are listed as Active, the rest are Idle. 444/939 (47.3%) ponds do not list a permit. 434 are operated by Valley Water Management Corporation.
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