Hydrostatic Test Water Discharges: Am I Regulated?
If you plan to release discharges resulting from the hydrostatic testing of vessels (pipelines, tanks, and other containers) into water in the state you must have a permit. You may qualify for coverage under general permit TXG670000. (Help with PDF.) Discharges (resulting from hydrostatic testing) are authorized from the following new and existing vessels under this general permit.
vessels previously containing and/or transferring raw or potable water, where the water used for hydrostatic tests does not contain corrosion inhibitors, antifreeze compounds, biocides, or other chemical additives (except chlorine)
existing vessels that formerly contained only elemental gases (e.g. hydrogen, oxygen, nitrogen, etc.)
existing vessels previously containing product or waste related to refined petroleum products
Please feel free to contact us if you have questions.