Overland Park, KS · Johnson County · Publicly Owned Treatment Works
Joco Douglas Smith Mid Basin is a publicly owned wastewater treatment plant in Overland Park, Johnson County, Kansas treating an average of 10.2 million gallons per day, serving about 126,584 residents. Treatment on site includes aerated lagoons, biogas silos, biogas balloons. It discharges under NPDES permit KS0119601 (effective), which expires in February 2027, with 0 recorded violations in the last three years.
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
11 verified contacts for Joco Douglas Smith Mid Basin, with validated emails and direct phone numbers.
Unlock 11 verified contacts (8 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Joco Douglas Smith Mid Basin, plus the full compliance history and discharge data.
Leawood · 4 mi away
12.13 MGD
Olathe · 7 mi away
1.3 MGD
Stanley · 7 mi away
5.14 MGD
Mission · 9 mi away
7.21 MGD
Kansas City · 10 mi away
0.03 MGD
Olathe · 10 mi away
3.74 MGD
Shawnee · 10 mi away
9.47 MGD
Kansas City · 10 mi away
2.64 MGD
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated March 20, 2025.