Questions or Comments:
tmdl@tceq.state.tx.us
tmdl@tceq.state.tx.us
Organic substance are chemical compounds such as pesticides or
herbicides. These chemicals, in high concentrations, may be harmful
to aquatic life or may impair the use of a water body as a source
for a drinking water treatment plant. Organic substances may also
accumulate in the tissue of fish and pose a risk to people if
consumed in large quantities over a large period of time.
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