Water system
Eldorado, Village Of
EPA ID OH6800512 · Preble County · 539 people served · owned by a local government
Eldorado, Village Of treats its own water from Groundwater wells (2 wells).
The system's record
- Active wells
- 2
- Serves
- 539 people · Preble County
- EPA ID
- OH6800512
About this area's water
Did you know
- Eldorado is one of Ohio's smallest incorporated villages, covering just 0.23 square miles.
- The village's population density (about 2,000 people per square mile) is high for a rural Preble County community because the built area is so compact.
- Eldorado is served by the Preble County District Library and the National Trail Local School District.
Source: en.wikipedia.org
History2
- before 1880Village of Eldorado already settled; the 1880 census recorded 337 residents.
- 1990Population peaked at 549 residents (up from 509 in 1980) before declining to 543 in 2000, 509 in 2010, and 458 in 2020.
Source: en.wikipedia.org
Treatment & pressure
How it is treated
Corrected from the researcher's guess: EPA's federal SDWIS database lists Eldorado's treatment processes as slat-tray aeration, rapid sand filtration, a reaction step, and post-hypochlorination -- consistent with an iron/manganese removal plant ahead of chlorine disinfection, not mere 'simple…
Source: data.epa.gov
Water pressure
Not published; no source-water assessment, engineering report, or council document describing system pressure could be located.
What it costs
No published rate schedule found for the village water utility; no Municode/American Legal-hosted ordinance or utility billing page could be located for this ~539-resident village.
Water quality & impurities
EPA compliance record
Lead at the tap: 90th-percentile result 2 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
Supply stress
No source-water assessment or capacity data was retrievable; unable to characterize stress with confidence for this small groundwater system.
Sewers
Sanitary
Not verified from a primary source.
Storm
Not verified from a primary source.
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
- 45321 · Eldorado59% 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
Eldorado, Village Of does not buy water from another system on record; it treats its own source water.
No other system is on record buying water from Eldorado, Village Of.
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
History: en.wikipedia.org
Treatment: data.epa.gov