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City Water Treatment Technique Changed

Post Date:11/15/2019 3:56 PM


The Texas Commission on Environmental Quality (TCEQ) sets minimum water quality
standards for public drinking water.

The City of Odessa, PWS ID TX0680002, failed to meet the minimum treatment technique
requirements for the month of October 2019. Specifically, our water system had more than
5% of the combined filter effluent turbidity readings were above 0.3 NTU for the month.
The City of Odessa has taken the following corrective actions to prevent a recurrence of the
violations: increased Alum dosage to 90 mg/l with a dosage of .60 mg/l of polymer.

If you have questions regarding this matter, you may contact Thomas G. Kerr at 432-335-

Note from Utilities: For seven (7) days during the month of October, the usual
source routing of raw water to the City’s treatment plant was altered. This was done to
allow for repairs on the raw water system. The alteration caused a variance in the water
quality such that chemical dosages had to be adjusted to meet standards. Since these
adjustments could not be anticipated or predetermined, the time required to reach the
proper adjustment caused the plant treatment to slightly exceed regulatory compliance
standards by 1.5%. The City of Odessa’s Utility Department assures everyone that efforts
to meet the compliance standard were made expeditiously and are always a priority. The
adjustment of chemical dosages resolved the treatment issue that was presented and the
traditional routing of raw water has resumed, removing the need for additional chemical
dosing. All treatment operations have resumed to traditional methods.
Thomas G. Kerr, P.E.
Director of Public Works / Utilities


PN Surface Water Treatment Technique - Non Acute PDF

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