Clean Water Act discharge permit · NPDES OH0146650

CHARLES MILL LAKE CAMPGROUND, Mansfield, OH: NPDES OH0146650 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
13Pollutants under a numeric limit
5Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

CHARLES MILL LAKE CAMPGROUND, held by Charles Mill Lake Campground, holds NPDES permit OH0146650, which discharges to Charles Mill Lake. EPA’s file records it issued April 11, 2018 and expiring April 30, 2023.

CHARLES MILL LAKE CAMPGROUND, Mansfield, Ohio: Individual permit OH0146650, held by Charles Mill Lake Campground; Administratively continued (past its expiration date and still in force until reissued); issued April 11, 2018, term to April 30, 2023; discharges to Charles Mill Lake.

Nitrogen, ammonia total [as N]: 8 limits, 28 violations of any kind, 24 effluent exceedances, latest October 31, 2021, largest 1,320% over the limit.
E. coli, MTEC-MF: 2 limits, 25 violations of any kind, 23 effluent exceedances, latest May 31, 2026, largest 3,139% over the limit.
Solids, total suspended: 4 limits, 17 violations of any kind, 13 effluent exceedances, latest May 31, 2024, largest 217% over the limit.
pH: 2 limits, 7 violations of any kind, 5 effluent exceedances, latest July 31, 2020.
BOD, carbonaceous [5 day, 20 C]: 4 limits, 7 violations of any kind, 3 effluent exceedances, latest December 31, 2021, largest 187% over the limit.
Flow, in conduit or thru treatment plant: 2 limits, 10 violations of any kind, 0 effluent exceedances.
Nitrite + Nitrate total [as N]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
Temperature, water deg. centigrade: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Turbidity [severity]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Oxygen, dissolved [DO]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
Biosolids weight indluding admixtures: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Sludge waste from secondary clarifiers: 2 limits, 0 violations of any kind, 0 effluent exceedances.

CHARLES MILL LAKE CAMPGROUND among its neighbors

EPA’s permit file holds 6 discharge permits in the Seymour Run-Black Fork subwatershed (HUC 050400020202), OH0146650 among them.

Other permits in the Seymour Run-Black Fork subwatershed (HUC 050400020202)

CHARLES MILL SITES LAKE COTTAGE AREA WWTP, Mansfield: OH0137880, minor permit, discharging to Charles Mill Lake, permit term to August 31, 2021
HERITAGE INN, Mansfield: OH0126543, minor permit, discharging to Unnmd Cr to Charles Mill Lake, permit term to May 31, 2026
MWCD - JOHNNY APPLESEED WWTP, Ashland: OH0130443, minor permit, discharging to UT to Black Fork Mohican, permit term to November 30, 2023
OAK PARK TAVERN, Mansfield, City Of: OH0137910, minor permit, discharging to UT TO CHARLES MILL, permit term to May 31, 2011
OHIO HILLTOP, INC, Mansfield: OH0111562, minor permit, discharging to Unnmd trib of Charles Mill Lake, permit term to August 31, 2025

Identity

Facility as filed	CHARLES MILL LAKE CAMPGROUND
Permittee as filed	Charles Mill Lake Campground
NPDES ID	OH0146650
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	April 11, 2018
Expiration date	April 30, 2023
Address	Mansfield, OH 44903
Receiving water	Charles Mill Lake
Subwatershed	Seymour Run-Black Fork (HUC 050400020202)

Effluent limits and exceedances

13Pollutants on file
13Under a numeric limit
11With a violation of any kind
5With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Nitrogen, ammonia total [as N]	8	28	24	October 31, 2021	1,320% over the limit
E. coli, MTEC-MF	2	25	23	May 31, 2026	3,139% over the limit
Solids, total suspended	4	17	13	May 31, 2024	217% over the limit
pH	2	7	5	July 31, 2020
BOD, carbonaceous [5 day, 20 C]	4	7	3	December 31, 2021	187% over the limit
Flow, in conduit or thru treatment plant	2	10	0
Nitrite + Nitrate total [as N]	2	4	0
Temperature, water deg. centigrade	2	2	0
Phosphorus, total [as P]	2	2	0
Turbidity [severity]	2	2	0
Oxygen, dissolved [DO]	1	1	0
Biosolids weight indluding admixtures	2	0	0
Sludge waste from secondary clarifiers	2	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES OH0146650.

Inspections

EPA’s inspection file holds no inspection for NPDES OH0146650.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES OH0146650.

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

This public-records page covers NPDES permit OH0146650, held by Charles Mill Lake Campground in Mansfield, OH, which discharges to Charles Mill Lake in the Seymour Run-Black Fork subwatershed (HUC 050400020202). The permit is listed as administratively continued, with 13 pollutants on file, 11 under a numeric limit, and 5 with an effluent exceedance.