Mammoth Spring WWTP
1050 N Fairfield Rd, Mammoth Spring, AR 72554 · Fulton County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.15 MGD
- NPDES permit
- AR0023850
- Effective
- Permit expires
- October 2028
- Population served
- 934
- CWNS 2022
Mammoth Spring WWTP is a publicly owned wastewater treatment works in Mammoth Spring, Fulton County, Arkansas treating an average of 0.04 million gallons per day against a permitted design capacity of 0.15 MGD, serving about 934 residents. It discharges under NPDES permit AR0023850 (effective), which expires in October 2028, with 68 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Mammoth Spring WWTP.
Available with a free Klarifi account
See the full treatment train at Mammoth Spring WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 68
- Effluent violations
- 68
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mammoth Spring WWTP.
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Nearby wastewater treatment plants in Arkansas
Hardy · 12 mi away
0.07 MGD
Cherokee Village · 15 mi away
0.06 MGD
Salem · 17 mi away
0.13 MGD
Ash Flat · 19 mi away
0.08 MGD
Horseshoe Bend · 21 mi away
0.02 MGD
Ravenden Springs · 21 mi away
0.0031 MGD
Horseshoe Bend · 22 mi away
0.06 MGD
Ravenden · 24 mi away
0.0035 MGD
Mammoth Spring WWTP: 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 July 23, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms