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Clean Water Act discharge permit · NPDES MI0022781

DELHI TWP WWTP, Holt, MI: NPDES MI0022781 discharge permit, effluent exceedances, inspections, penalties

DELHI TWP WWTP, held by Delhi Charter Township, holds NPDES permit MI0022781, which discharges to Pawlowski Drain. EPA’s file records it issued January 9, 2019 and expiring October 1, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedDELHI TWP WWTP
Permittee as filedDelhi Charter Township
NPDES IDMI0022781
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
IssuedJanuary 9, 2019
Expiration dateOctober 1, 2023
Issuing agencyState
AddressHolt, MI 48842
Receiving waterPawlowski Drain
Receiving water impaired303(D) Listed
SubwatershedSkinner Extension Drain-Grand River (HUC 040500040702)
Program components on fileBiosolids, POTW
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same 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
Mercury, total [as Hg]6166October 31, 201733% over the limit
BOD, carbonaceous [5 day, 20 C]12702May 31, 202299,999% over the limit
BOD, carb-5 day, 20 deg C, percent removal251April 30, 2005495% over the limit
Nitrogen, ammonia total [as N]6460
Solids, total suspended8400
Phosphorus, total [as P]4280
pH2280
Flow, in conduit or thru treatment plant2280
Coliform, fecal general2280
Oxygen, dissolved [DO]2160
Chlorine, total residual1140
Solids, total360
Arsenic, dry weight360
Selenium, dry weight360
Copper, dry weight360
Cadmium, dry weight360
Nitrogen, total Kjeldahl360
Molybdenum, sludge, total, dry weight [as Mo]360
Zinc, sludge, total, dry weight [as Zn]360
Lead, sludge, total, dry weight [as Pb]360
Nickel, sludge, total, dry weight [as Ni]360
Nitrogen, sludge, total, dry weight [as N]360
Mercury, sludge, total, dry weight [as Hg]360
Potassium, sludge, total, dry weight [as K]360
Phosphorus, sludge, total, dry weight [as P]360
Solids, suspended percent removal240
Toxicity [acute], Ceriodaphnia dubia040
Toxicity [chronic], Ceriodaphnia dubia040
TU Static 24 Hr Acute Pimephales promelas040
Static 48 Hr Chronic Pimphales Promelas040
Toxicity, choice of species010
Cyclohexane800

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

DateWhat EPA recordedAgency
September 29, 2022Monitoring Violations - Invalid/Unrepresentative SampleST6
August 10, 2022Monitoring Violations - Invalid/Unrepresentative SampleST6
February 26, 2019Pretreatment - Failure to Develop/Enforce StandardsST6
February 26, 2019Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II)ST6
November 14, 2018Management Practice Violations - Best Management Practice DeficienciesST6
November 14, 2018Failure to eliminate or relocate industrial stormwater outfalls from identified sensitive areasST6
November 14, 2018Other noncompliance related to industrial stormwater dischargesST6
January 1, 2018Pretreatment - Failure to Develop/Enforce StandardsST6
January 1, 2018Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II)ST6
January 1, 2017Pretreatment - Failure to Develop/Enforce StandardsST6
January 1, 2017Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II)ST6

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 October 14, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MI0022781 for DELHI TWP WWTP in Holt, MI, held by Delhi Charter Township, which discharges to Pawlowski Drain and is listed as administratively continued. The page lists 3 pollutants under a numeric limit, 3 pollutants with an effluent exceedance, and a Major Discharger class designation, with the permit issued January 9, 2019 and expiring October 1, 2023.