Clean Water Act discharge permit · NPDES FLR20GW09

NS MAYPORT WWTP, Jacksonville, FL: NPDES FLR20GW09 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

NS MAYPORT WWTP, held by American Water, holds NPDES permit FLR20GW09. EPA’s file records it issued December 22, 2023 and expiring December 21, 2028. 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.

What the register holds for NS MAYPORT WWTP: its NPDES ID, its permit type and status, its dates, its address in Jacksonville, Florida. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES FLR20GW09.

Identity

Facility as filed	NS MAYPORT WWTP
Permittee as filed	American Water
NPDES ID	FLR20GW09
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	December 22, 2023
Expiration date	December 21, 2028
Issuing agency	Florida Department of Environmental Protection
Address	Jacksonville, FL 32227
Receiving water impaired	303(D) Listed
Subwatershed	Chicopit Bay (HUC 030801031606)

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

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 FLR20GW09.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES FLR20GW09.

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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, FLR20GW09.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID FLR20GW09 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

The NS MAYPORT WWTP, a Storm Water Construction permit held by American Water in Jacksonville, Florida, is one of 159 storm water construction permits in Jacksonville on EPA's NPDES register, and 0.0% of those 159 permits have a violation on file. Among the 159 Jacksonville storm water construction permits, this one, issued December 22, 2023, has an earlier issue date than 1.3% of them. It sits in the Chicopit Bay subwatershed, which holds 35 NPDES permits, this one included.