Water system
St. Henry Village
EPA ID OH5401312 · Mercer County · 2,596 people served · owned by a local government
St. Henry Village treats its own water from Groundwater wells (12 wells).
The system's record
- Active wells
- 12
- Serves
- 2,596 people · Mercer County
- EPA ID
- OH5401312
About this area's water
Did you know
- The village is named for St. Henry, Holy Roman Emperor, because the town plat was recorded on July 13 — his feast day.
- St. Henry's groundwater system serves a Mercer County farm town founded by a single German settler, Johann Heinrich Römer, in 1837.
- The town's Catholic church, completed in 1897, is a National Register of Historic Places landmark.
- St. Henry won a 2012 'Best Municipal Water in the USA' award in a blind sniff-and-taste contest judged by an 11-member media panel; local officials credited it partly to the plant not softening its water. (Dayton Daily…
History4
- 1837St. Henry founded and platted by German settler Johann Heinrich Römer, on land his brother Franz sold him July 7, 1837.
- 1850Village post office opened.
- 1897St. Henry's Catholic Church, now on the National Register of Historic Places, completed.
- 1901St. Henry incorporated as a village.
Source: en.wikipedia.org
Treatment & pressure
How it is treated
Village-operated groundwater system. No CCR could be located online (the linked PDFs on the village's own site are dead), so the treatment process and exact well count could not be independently confirmed here — the input lists 12 wells, while one secondary source suggests 7 wells at 250 ft depth…
Source: daytondailynews.com
Water pressure
Not published in any source found.
What it costs
$4.35 per 1,000 gallons
Typical household bill about $10 a month for water.
Per the village's current rates page: in-village minimum $10.00 for the first 2,000 gal, plus $4.35 per additional 1,000 gal, plus a separate $10.00 water improvement surcharge…
Source: sthenryoh.gov
Water quality & impurities
EPA compliance record
Lead at the tap: 90th-percentile result 2.6 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
2 violations of any kind logged since 2020, 2 of them paperwork (monitoring, reporting, public notice or consumer report).
Sewers
Sanitary
Per the same village rates page: in-village sewer is billed on an identical structure to water — $10.00 minimum (first 2,000 gal) + $4.35/1,000 gal additional + a $10.00 wastewater improvement surcharge; outside-village is $17.00 + $7.43/1,000 gal + the surcharge. (Flagging explicitly: this is the SEWER rate, structured identically to…
Source: sthenryoh.gov
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources.
Main supplier in 1 ZIP code
Serves
Main water supplier in 1 ZIP code
- 45883 · Saint Henry62% of residents
Population-weighted resident shares; a ZIP code can have more than one system on record. Recomputed from each ZIP's own system list, not from the map's cached footprint.
Buys from · Sells to
St. Henry Village does not buy water from another system on record; it treats its own source water.
No other system is on record buying water from St. Henry Village.
Photograph
On the map
Show this system's territory on the map — 1 ZIP code in all.
Sources
U.S. EPA SDWIS and Community Water System Service Area Boundaries (v3, 2026), Ohio EPA primacy data, 2020 census blocks: the system serving most residents, traced through purchases to the treating utility; Ohio EPA 2023 Sewer and Water Rate Survey (Ohio State, May 2025) for household bills; Ohio EPA DEFA loan awards since 2016 for the loans paragraph · EPA SDWIS · EPA service area boundaries · Ohio EPA drinking water · Ohio EPA rate survey
Notable facts: en.wikipedia.org, daytondailynews.com
History: en.wikipedia.org
Rates: sthenryoh.gov
Sewers: sthenryoh.gov
Treatment: daytondailynews.com