Joco Tomahawk Creek
10701 Lee Blvd, Leawood, KS 66211 · Johnson County · Publicly Owned Treatment Works
- Average flow
- 14.9 MGD
- Design flow
- —
- NPDES permit
- KS0100854
- Effective
- Permit expires
- April 2031
- Population served
- 43,021
- CWNS 2022
Joco Tomahawk Creek is a publicly owned wastewater treatment plant in Leawood, Johnson County, Kansas treating an average of 14.9 million gallons per day, serving about 43,021 residents. It discharges under NPDES permit KS0100854 (effective), which expires in April 2031, with 1 recorded violation in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Joco Tomahawk Creek.
Available with a free Klarifi account
See the full treatment train at Joco Tomahawk Creek: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Joco Tomahawk Creek, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Joco Tomahawk Creek, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Kansas
Overland Park · 4 mi away
10.79 MGD
Stanley · 6 mi away
6.3 MGD
Mission · 8 mi away
11.17 MGD
Olathe · 11 mi away
1.61 MGD
Kansas City · 12 mi away
0.06 MGD
Kansas City · 12 mi away
2.59 MGD
Kansas City · 13 mi away
17.31 MGD
Shawnee · 13 mi away
11.46 MGD
Joco Tomahawk Creek: frequently asked questions
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 October 26, 2026; facility record last updated February 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms