An estimated 30,000 gallons of untreated sewage from a wastewater lift station at Hartsfield-Jackson Atlanta International Airport reached Sullivan Creek on 16 September 2026, sending E. coli levels downstream of the spill site to "too numerous to count," the Flint Riverkeeper said in findings reported on 23 September (Georgia Public Broadcasting).
Key takeaways
- Georgia's Environmental Protection Division classified the 16 September release from a Hartsfield-Jackson lift station as a "major spill," with about 30,000 of roughly 33,000 spilled gallons reaching Sullivan Creek (Georgia Public Broadcasting).
- Flint Riverkeeper Director of Field Operations RJ Gipaya recorded E. coli results of "too numerous to count" at multiple sites on Sullivan Creek and on the Flint River downstream of its confluence with the creek (Georgia Public Broadcasting).
- Upstream baselines for comparison were 533 CFU/100 mL in Sullivan Creek above the spill and 66 CFU/100 mL in the Flint River above the confluence (Georgia Public Broadcasting).
- Riverkeeper staff who visited the creek the day after the release reported a strong odor, a surface sheen, at least 200 dead fish and sharply lower dissolved oxygen (Georgia Public Broadcasting).
- The airport posted signs warning the public not to swim, fish or play in Sullivan Creek until they are removed, and downstream public water systems in Fayette, Fulton and Clayton counties, College Park and the city of Griffin were notified (Georgia Public Broadcasting).
What happened
According to the Flint Riverkeeper, its team collected water samples after an estimated 30,000 gallons of untreated sewage reached Sullivan Creek from a wastewater lift station at Hartsfield-Jackson Atlanta International Airport on 16 September (Georgia Public Broadcasting). The Georgia Environmental Protection Division classified the release as a "major spill," and EPD told GPB that about 33,000 gallons of sewage spilled that day, with approximately 30,000 gallons reaching Sullivan Creek (Georgia Public Broadcasting).
Field Operations Director RJ Gipaya logged E. coli results that were "too numerous to count," or TNTC, at multiple sites downstream on Sullivan Creek and at two locations on the Flint River downstream of where the creek enters the river (Georgia Public Broadcasting). Upstream baselines for context were 533 colony-forming units per 100 milliliters in Sullivan Creek and 66 CFU per 100 milliliters in the Flint River (Georgia Public Broadcasting).
Riverkeeper staff who visited the creek on the Thursday after the release reported a strong odor, a sheen on the water and at least 200 dead fish, along with sharply lower dissolved oxygen that can make survival difficult for fish and other aquatic life (Georgia Public Broadcasting). Following the spill, the airport posted signs near Sullivan Creek telling people not to swim, fish or play in the water until the signs are removed, and airport officials said downstream water quality is being monitored under EPD requirements (Georgia Public Broadcasting).
Because Sullivan Creek drains into the Flint River, downstream public water systems were notified, including Fayette, Fulton and Clayton counties, College Park and the city of Griffin (Georgia Public Broadcasting). GPB News asked the Georgia Department of Natural Resources' Fisheries Management program whether state officials have independently tested the water or investigated the reported fish kill (Georgia Public Broadcasting).
Specification read
For a buyer, the reported 30,000 gallons that reached the creek on 16 September is roughly 114 m³/day of untreated domestic wastewater bypassing a lift station in a single event (general conversion from the reported 30,000 US-gallon figure). The lift-station failure here is upstream of any treatment train, so the relevant procurement question is not biological capacity but containment, alarm telemetry, and standby pumping so that a single station failure does not convert into a 30,000-gal surface-water discharge with a TNTC E. coli result downstream. A municipal collection system that depends on one or two lift stations to move sewage from a transport hub to a treatment works typically specifies screening, grit removal, primary clarification, a biological stage such as A2O, MBR, MBBR, SBR or UASB, tertiary filtration and UV or chlorination disinfection before discharge; the failure at Hartsfield-Jackson sits before that whole train, which is why downstream utilities in Fayette, Fulton and Clayton counties, College Park and Griffin were placed on notice. Plants sized for combined sewer overflows of this order, or for airport or industrial flows in the 100–500 m³/day band, are commonly built as skid or underground packages with built-in lift-station duty/standby and SCADA alarming, and operators in that envelope are the audience for this incident. Buyers comparing biological options for small-to-mid municipal flows in the same range can weigh an MBR train against a conventional activated-sludge baseline, as discussed in our 2026 MBR versus conventional activated-sludge comparison for petroleum wastewater in Blackfoot, US (2026 Engineering Comparison) and the Syracuse transportation-equipment case study.
| Parameter | Reported value | Source |
|---|---|---|
| Total sewage spilled 16 Sept | ~33,000 gallons | Georgia Public Broadcasting |
| Sewage reaching Sullivan Creek | ~30,000 gallons | Georgia Public Broadcasting |
| E. coli, Sullivan Creek upstream | 533 CFU/100 mL | Georgia Public Broadcasting |
| E. coli, Flint River upstream of confluence | 66 CFU/100 mL | Georgia Public Broadcasting |
| E. coli, downstream sites | TNTC (too numerous to count) | Georgia Public Broadcasting |
| Reported dead fish | at least 200 | Georgia Public Broadcasting |
For operators scoping a small municipal or commercial flow in the same envelope, our Municipal treatment hub, the Integrated Sewage Treatment range, the Underground Package Sewage Treatment Plant (WSZ Series) product page and the Package Sewage Treatment Plant Design Criteria: 2026 Engineering Guide outline the standard biological and disinfection stages used after a lift-station failure of this class.
FAQ
What counts as a "major spill" under Georgia EPD rules?
Georgia's Environmental Protection Division classified the 16 September release from a Hartsfield-Jackson lift station as a "major spill," which triggers the EPD monitoring and downstream-notification process the airport is now operating under (Georgia Public Broadcasting). Specific EPD volume thresholds are not stated in the source.
What is the typical capital cost and lead time for a packaged municipal plant in the 100–500 m³/day range?
No figure was reported in the source. As a general industry range, not from the sources, packaged municipal plants in this flow band are usually quoted in the low-single-digit USD per m³/day of capacity, with engineering and delivery in the 3–6 month range once permits are in hand, and longer for containerised or underground skids tied to lift-station upgrades.
Which downstream utilities were put on notice after the Sullivan Creek discharge?
Because Sullivan Creek drains into the Flint River, EPD notified downstream public water systems in Fayette, Fulton and Clayton counties, College Park and the city of Griffin (Georgia Public Broadcasting).
How do suppliers typically differentiate MBR versus conventional activated sludge for small municipal flows?
The reported incident does not address biological selection. The 2026 engineering comparisons linked in the Specification Read above walk through footprint, effluent quality and operating cost for petroleum and transportation-equipment duty cycles, which is the same trade-off buyers face for Integrated Sewage Treatment packages.
