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Clean Water Act discharge permit · NPDES IL0053457

CRYSTAL LAKE WWTP #3, Crystal Lake, IL: NPDES IL0053457 discharge permit, effluent exceedances, inspections, penalties

CRYSTAL LAKE WWTP #3, held by CRYSTAL LAKE, CITY OF, holds NPDES permit IL0053457, which discharges to Unnamed Trib Of Sleepy Hollow Creek. EPA’s file records it issued November 20, 2014 and expiring November 30, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedCRYSTAL LAKE WWTP #3
Permittee as filedCRYSTAL LAKE, CITY OF
NPDES IDIL0053457
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedNovember 20, 2014
Expiration dateNovember 30, 2019
AddressCrystal Lake, IL 60012
Receiving waterUNNAMED TRIB OF SLEEPY HOLLOW CREEK
Receiving water impaired303(D) Listed
SubwatershedGriswold Lake-Fox River (HUC 071200061102)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Dichlorobromomethane8106October 31, 2015835% over the limit
Coliform, fecal general255August 31, 202599,999% over the limit
Chlorine, total residual451October 31, 201150% over the limit
Peracetic Acid011April 30, 2024175% over the limit
BOD, carbonaceous [5 day, 20 C]8160
Nitrogen, ammonia total [as N]2880
Barium, total [as Ba]260
Solids, total suspended940
Phosphorus, total [as P]840
Flow, in conduit or thru treatment plant640
Chloride [as Cl]440
pH420
Oil & Grease220
Cyanide, weak acid, dissociable220
Cyanide, total [as CN]220
Fluoride, total [as F]220
Arsenic, total [as As]220
Beryllium, total [as Be]220
Cadmium, total [as Cd]220
Chromium, hexavalent [as Cr]220
Chromium, total [as Cr]220
Copper, total [as Cu]220
Iron, total [as Fe]220
Iron, dissolved [as Fe]220
Lead, total [as Pb]220
Manganese, total [as Mn]220
Thallium, total [as Tl]220
Nickel, total [as Ni]220
Silver, total [as Ag]220
Zinc, total [as Zn]220
Antimony, total [as Sb]220
Selenium, total [as Se]220
Phenolics, total recoverable220
Mercury, total [as Hg]220
Oxygen, dissolved [DO]1010
Nitrogen, total [as N]210
Phosphorus, dissolved210
Solids, total dissolved010
Temperature, water deg. fahrenheit200
Alkalinity, total [as CaCO3]200
Nitrogen, Kjeldahl, total [as N]200
Nitrite + Nitrate total [as N]200
BOD, 5-day, 20 deg. C100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0053457.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers NPDES permit IL0053457 held by Crystal Lake, City of for CRYSTAL LAKE WWTP #3 in Crystal Lake, IL, which discharges to Unnamed Trib Of Sleepy Hollow Creek within the Griswold Lake-Fox River subwatershed (HUC 071200061102). The page lists 4 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, and it describes the permit as administratively continued with a Major Discharger class of 41.