Weekly Water Quality Results

Weekly Water Quality Results

Since 2000, we've been keeping you up to date with the latest conditions around the lake and in our basin. With our data communities can better understand the status of popular recreation sites and have greater insight into what they can expect in the lake.

Consult the Table Below for Our Weekly Water Quality Results:

Water Quality Legend:

Pontchartrain Conservancy now utilizes the Beach Action Value (BAV), described in EPA's 2012 Recreational Water Quality Criteria (RWQC). The BAV value is a tool for determining a “do not exceed” value for beach notification purposes (such as advisories). For Enterococci, the BAV described in the 2012 RWQC is 70 CFU/100mL. The presence in water of Enterococci, is direct evidence of fecal contamination from warm-blooded animals. The presence indicates the possible presence of other pathogens.

A location will be marked red if the enterococci sample exceeds an enterococci density of 70 CFU/100mL. Data marked red is above criteria.

A location will be marked green if the enterococci sample does not exceed an enterococci density of 70 CFU/100mL. Data marked green is below criteria.

EPA studies suggest that fecal coliform is a poor-predictor of gastrointestinal disease, and recommended the use of Enterococcus. Pontchartrain Conservancy still samples and analyzes for fecal coliform, but we now only highlight when Enterococcus values exceed the Beach Action Value of 70 CFU/100mL to be consistent with the 2012 RWQC. Learn more below!

Rainfall Runoff Warning

The Lake's water quality may be negatively impacted by rainfall runoff. Heavy rains may cause wastewater treatment systems to overflow and contaminate the lake. If it has rained in your area in the past three days, the runoff could pollute the region of the lake near you. Always use caution when recreating in Lake Pontchartrain.

There are always inherent risks associated with recreation in natural waterways.  Please use extreme caution.

What Do We Test For?

Where Do We Sample?

Learn More About Your Basin!

Over the course of 30 years, we've helped clean up waterways across the basin. Our methods for monitoring are approved by the EPA. Every Tuesday we visit twelve recreational sites to sample water quality, and by Friday we publish our results. Processing our data can take up to two days because of the method used for indicator bacteria testing.