What is the address of Hilliard WWTF?

The address on the plant’s EPA facility record is 5th Street & Ruby Drive, Hilliard, FL 32046, in Nassau County. Its coordinates are 30.6986, -81.9171. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Hilliard WWTF treat?

Hilliard WWTF treats an average of 0.26 MGD and is permitted for a design flow of 0.48 MGD.

What treatment technology does Hilliard WWTF use?

Klarifi has identified 7 treatment structures and unit processes at the Hilliard facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Hilliard WWTF?

The facility discharges under NPDES permit FL0043079, currently effective, expiring February 2030.

Is Hilliard WWTF in compliance?

Discharge monitoring reports show 106 violations at Hilliard WWTF in the last three years, 46 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Hilliard WWTF and how do I contact them?

Hilliard WWTF is a publicly owned treatment works in Hilliard, Florida. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

Try for free Log in

Hilliard WWTF

5th Street & Ruby Drive, Hilliard, FL 32046 · Nassau County · Publicly Owned Treatment Works

Average flow: 0.26 MGD

Design flow: 0.48 MGD

NPDES permit: FL0043079; Effective

Permit expires: February 2030

Population served: 2,920; CWNS 2022

Hilliard WWTF is a publicly owned wastewater treatment works in Hilliard, Nassau County, Florida treating an average of 0.26 million gallons per day against a permitted design capacity of 0.48 MGD, serving about 2,920 residents. It discharges under NPDES permit FL0043079 (effective), which expires in February 2030, with 106 recorded violations in the last three years.

Treatment technology

7 treatment structures and unit processes identified at Hilliard WWTF.

Available with a free Klarifi account

See the full treatment train at Hilliard WWTF: structures, unit processes and planned upgrades, with exact unit counts.

Create a free account

Compliance snapshot (last 3 years)

Total violations: 106

Effluent violations: 46

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

2 verified contacts for Hilliard WWTF, with validated emails and direct phone numbers.

Unlock 2 verified contacts

Names, validated emails and direct phone numbers for decision-makers at Hilliard WWTF, plus the full compliance history and discharge data.

Try Klarifi free

Nearby wastewater treatment plants in Florida

Callahan, City Of - Callahan WWTF

Callahan · 10 mi away

0.15 MGD

Callahan Intermediate School WWTF

Callahan · 10 mi away

0.0099 MGD

Dinsmore Community Correctional Center WWTF

Jacksonville · 17 mi away

0.02 MGD

Nassau Regional WWTF

Yulee · 22 mi away

1.71 MGD

Baldwin WWTF

Jacksonville · 28 mi away

0.18 MGD

Nassau Amelia Utilities WWTF

Fernandina Beach · 29 mi away

0.95 MGD

Jea Buckman WWTP

Jacksonville · 29 mi away

21.38 MGD

City Of Macclenny Wastewater Facility

Macclenny · 32 mi away

0.62 MGD

Hilliard WWTF: frequently asked questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed October 26, 2026; facility record last updated October 22, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free