Clean Water Act discharge permit · NPDES FLR10YO99

GRASSMERE, Zellwood, FL: NPDES FLR10YO99 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

GRASSMERE, held by RockWell Homes, holds NPDES permit FLR10YO99. EPA’s file records it issued July 5, 2026 and expiring July 4, 2031.

GRASSMERE, Zellwood, Florida: Coverage under a general permit FLR10YO99, held by RockWell Homes; Construction stormwater; Effective; issued July 5, 2026, term to July 4, 2031, by Florida Department of Environmental Protection.

Florida holds 15,654 Construction stormwater coverages of this permit type in EPA’s file; 14,863 were issued before FLR10YO99. RockWell Homes holds 5 permits in Florida.

Other permits held by RockWell Homes

HARVEST AT OVATION (FKA HORIZON AT OVATION), Winter Garden: FLR10WE33, issued August 21, 2023
NORTHLAKE AT OVATION, Winter Garden: FLR10YC51, issued December 7, 2025
WHALEY GROVE, Saint Cloud: FLR10YJ44, issued April 4, 2026
TERRACE AT WESTVIEW, Kissimmee: FLR10YP00, issued July 5, 2026

Coverages issued nearest FLR10YO99

July 4, 2026: OWL'S HEAD SERVICE ROAD (PHASE 1), Freeport, FLR20JK21, held by Owl's Head Residential, LLC
July 4, 2026: CORNERSTONE CLASSICAL ACADEMY, Yulee, FLR20JK22, held by W Gardner, LLC
July 4, 2026: OWL'S HEAD SERVICE ROAD (PHASE 2), Freeport, FLR20JK23, held by Owl's Head Residential, LLC
July 4, 2026: GARRISON BIGHT MARINA INC, Key West, FLR20JK24, held by MARINO CONSTRUCTION GROUP, INC
July 5, 2026: POMPANO PICKLE, Pompano Beach, FLR10YO98, held by Pompano Pickle, LLC
July 5, 2026: TERRACE AT WESTVIEW, Kissimmee, FLR10YP00, held by RockWell Homes
July 5, 2026: IVY RANCH, Homestead, FLR10YP01, held by DR Horton, Inc.
July 5, 2026: PINNACLE AT SOUTHLAND, Cutler Bay, FLR10YP02, held by ARQ 211, LLLP
July 5, 2026: HELMS RD WATERMAIN EXTENSION, Labelle, FLR10YP03, held by Accurate Drilling Systems, Inc.
July 5, 2026: WESTLAKE RESIDENTIAL, Tampa, FLR10YP04, held by R.E. Beckner Construction, Inc.

Other permits in Zellwood

7-ELEVEN ZELLWOOD, Zellwood: FLR20IW70, minor permit, permit term to January 9, 2031
A-1 BLOCK ZELLWOOD FACILITY, Zellwood: FLG110335, minor permit, permit term to July 30, 2026
ANUVIA FLORIDA LLC, Zellwood: FLR05H908, minor permit, permit term to January 23, 2021
CHEMICAL SYSTEMS OF FLORIDA, Zellwood: FLR05C012, minor permit, discharging to DRAINAGE DITCH, permit term to January 27, 2026
CHRYSO, INC, Zellwood: FLR05J540, minor permit, permit term to May 23, 2031
GCP APPLIED TECHNOLOGIES INC, Zellwood: FLR05H935, minor permit, permit term to March 16, 2021
GRACE CONSTRUCTION PRDS, Zellwood: FLR05A980, minor permit, discharging to LAKE APOPKA, permit term to June 8, 2011
NUCOR HARRIS REBAR - ZELLWOOD, Zellwood: FLR05G935, minor permit, permit term to July 25, 2024
PONKAN ROAD OUTDOOR STORAGE, Zellwood: FLR10VW39, minor permit, permit term to March 22, 2028
SENECA, Zellwood: FLR20IN05, minor permit, permit term to August 21, 2030

What the register holds for GRASSMERE: its NPDES ID, its permit type and status, its dates, its address in Zellwood, Florida. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES FLR10YO99.

Identity

Facility as filed	GRASSMERE
Permittee as filed	RockWell Homes
NPDES ID	FLR10YO99
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	July 5, 2026
Expiration date	July 4, 2031
Issuing agency	Florida Department of Environmental Protection
Address	Zellwood, FL 32798

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES FLR10YO99.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES FLR10YO99.

Inspections

EPA’s inspection file holds no inspection for NPDES FLR10YO99.

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 FLR10YO99.

Watch this permit

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Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES FLR10YO99 for GRASSMERE in Zellwood, FL, held by RockWell Homes, a construction stormwater coverage under a general permit with Effective status. The permit was issued July 5, 2026 and expires July 4, 2031, and the register lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.