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NPDES ILL029815 · Clean Water Act

MASON CITY STP, CITY OF, Mason City, IL: NPDES ILL029815 discharge permit, effluent exceedances, inspections, penalties

MASON CITY STP, CITY OF, Mason City, Illinois: Associated permit record ILL029815, held by CITY OF MASON CITY; Biosolids; Administratively continued; issued January 1, 2021, term to December 31, 2025.

  • Arsenic, dry weight: 0 limits, 3 violations of any kind.
  • Selenium, dry weight: 0 limits, 3 violations of any kind.
  • Copper, dry weight: 0 limits, 3 violations of any kind.
  • Cadmium, dry weight: 0 limits, 3 violations of any kind.
  • Zinc, sludge, total, dry weight [as Zn]: 0 limits, 3 violations of any kind.
  • Lead, sludge, total, dry weight [as Pb]: 0 limits, 3 violations of any kind.
  • Nickel, sludge, total, dry weight [as Ni]: 0 limits, 3 violations of any kind.
  • Mercury, sludge, total, dry weight [as Hg]: 0 limits, 3 violations of any kind.
  • Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 2 violations of any kind.
  • Ann. amt sludge disposed by other method: 0 limits, 1 violation of any kind.
  • Annual amt of sludge incinerated: 0 limits, 1 violation of any kind.
  • Annual sludge production, total: 0 limits, 1 violation of any kind.
  • Annual amount of sludge land applied: 0 limits, 1 violation of any kind.
  • Annual amt. sludge disposed surface unit: 0 limits, 1 violation of any kind.
  • Annual amt sludge disposed in landfill: 0 limits, 1 violation of any kind.
  • Annual amt sludge transported interstate: 0 limits, 1 violation of any kind.
  • Pollutant table from 503.13: 0 limits, 1 violation of any kind.
  • Level of pathogen requirements achieved: 0 limits, 1 violation of any kind.
  • Description of pathogen option used: 0 limits, 1 violation of any kind.
  • Vector attraction reduction alternative used: 0 limits, 1 violation of any kind.

Illinois holds 270 Biosolids coverages of this permit type in EPA’s file; 0 were issued before ILL029815. CITY OF MASON CITY holds 2 permits in Illinois.

Other permits held by CITY OF MASON CITY

Coverages issued nearest ILL029815

MASON CITY STP, CITY OF among its neighbors

6 discharge permits are in the Mason City subwatershed (HUC 071300090803); ILL029815 is one. Its county: 23, 1 major; ILL029815 is minor permit.

Other permits in the Mason City subwatershed (HUC 071300090803)

Identity

FacilityMASON CITY STP, CITY OF
PermitteeCITY OF MASON CITY
NPDES IDILL029815
StatusAdministratively continued
TypeAssociated permit record
ClassMinor
Facility typeNon-POTW
ProgramBiosolids
IssuedJanuary 1, 2021
ExpiresDecember 31, 2025
AddressMason City, IL 62664
SubwatershedMason City (HUC 071300090803)

NPDES ILL029815: effluent limits and exceedances

MASON CITY STP, CITY OF (NPDES ILL029815): 20 pollutants on file, 0 limited; 20 with a violation of any kind, 0 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Arsenic, dry weight030
Selenium, dry weight030
Copper, dry weight030
Cadmium, dry weight030
Zinc, sludge, total, dry weight [as Zn]030
Lead, sludge, total, dry weight [as Pb]030
Nickel, sludge, total, dry weight [as Ni]030
Mercury, sludge, total, dry weight [as Hg]030
Molybdenum, sludge, total, dry weight [as Mo]020
Ann. amt sludge disposed by other method010
Annual amt of sludge incinerated010
Annual sludge production, total010
Annual amount of sludge land applied010
Annual amt. sludge disposed surface unit010
Annual amt sludge disposed in landfill010
Annual amt sludge transported interstate010
Pollutant table from 503.13010
Level of pathogen requirements achieved010
Description of pathogen option used010
Vector attraction reduction alternative used010

NPDES ILL029815: inspections, violations and enforcement

NPDES ILL029815 (MASON CITY STP, CITY OF): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES ILL029815

NPDES ILL029815: 20 pollutant rows, 0 dated events; ICIS-NPDES download, loaded October 14, 2026.