Why Performance Audits Matter

Wastewater treatment plants are built to run within tight tolerances, but performance quietly drifts over years of continuous operation. Pumps lose efficiency, media beds compact, and sensors drift out of calibration long before an alarm ever sounds.

A performance guarantee test is the fastest way to catch that drift before it turns into a permit violation, a costly breakdown, or an unplanned discharge event.

5 Signs It’s Time for an Audit

Rising energy costs without a corresponding increase in flow. Blowers, pumps, and aerators are usually the biggest line item on a plant’s utility bill, and a gradual increase often signals mechanical wear before it shows up anywhere else.

Effluent quality that’s technically compliant but trending in the wrong direction. If your BOD, COD, or TSS numbers are creeping toward your permit limits, an audit can identify the root cause while you still have margin to fix it.

More frequent alarms or manual interventions. Operators often adapt to a slowly failing process without realizing how much manual correction has become routine.

Equipment approaching or past its expected service life, especially blowers, UV systems, and clarifier mechanisms.

An upcoming permit renewal or a planned expansion, since regulators and engineers both want current, accredited performance data before signing off on changes.

What a Performance Guarantee Test Involves

A performance guarantee test combines on-site measurement under real operating conditions with accredited laboratory analysis, comparing your facility’s actual output against the thresholds defined in your permit or original design specifications.

For facilities that need ongoing support rather than a one-time check, our operational assistance service pairs the same monitoring approach with continuous performance tracking and preventive maintenance.

Getting Started

If any of the signs above sound familiar, get in touch and we’ll help you scope the right assessment for your facility.