What is the address of Holgate WWTP?

The address on the plant’s EPA facility record is State Rte 18, Holgate, OH 43527, in Henry County. Its coordinates are 41.2598, -84.1447. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Holgate WWTP treat?

Holgate WWTP is permitted for a design flow of 0.25 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Holgate WWTP use?

Klarifi has identified one treatment structure or unit process at the Holgate facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Holgate WWTP?

The facility discharges under NPDES permit OH0021865, currently effective, expiring October 2027.

Is Holgate WWTP in compliance?

Discharge monitoring reports show 4 violations at Holgate WWTP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Holgate WWTP and how do I contact them?

Holgate WWTP is a publicly owned treatment works in Holgate, Ohio. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Holgate WWTP

State Rte 18, Holgate, OH 43527 · Henry County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.25 MGD

NPDES permit: OH0021865; Effective

Permit expires: October 2027

Population served: 1,061; CWNS 2022

Holgate WWTP is a publicly owned wastewater treatment works in Holgate, Henry County, Ohio, serving about 1,061 residents. It discharges under NPDES permit OH0021865 (effective), which expires in October 2027, with 4 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Holgate WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 4

Effluent violations: 4

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

Key contacts

Decision-makers at Holgate WWTP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Ohio

Hamler WWTP

Hamler · 6 mi away

0.18 MGD

Defiance Water Pollution Control Plant

Defiance · 9 mi away

2.87 MGD

Napoleon WWTP

Napoleon · 9 mi away

1.7 MGD

Miller City High Sch WWTP

Miller City · 11 mi away

0.01 MGD

Continental WWTP

Continental · 12 mi away

0.33 MGD

Mcclure WTP

Mcclure · 14 mi away

—

Liberty Center WWTP

Liberty Center · 14 mi away

0.07 MGD

Leipsic WWTP

Leipsic · 14 mi away

1 MGD

Holgate WWTP: 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 August 7, 2026.

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

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