Water system
St. Marys City
EPA ID OH0600612 · Auglaize County · 9,356 people served · owned by a local government
St. Marys City treats its own water from Teays River Buried Valley Aquifer (wells).
The system's record
- Aquifer
- Teays River Valley Aquifer (gravel and limestone wells)
- Active wells
- 4
- Serves
- 9,356 people · Auglaize County
- EPA ID
- OH0600612
4 wells: two limestone wells (Carl Jackson well field) and two gravel wells (Barrington well field) in the ancient Teays River Valley system; not directly tied to nearby Grand Lake St. Marys.
About this area's water
Water quality & impurities
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2025 (action level 15 ppb).
EPA health-based violations since 2015:
- 2024Lead and Copper Rule (lead) · treatment technique violation · returned to compliance
3 violations of any kind logged since 2020, 2 of them paperwork (monitoring, reporting, public notice or consumer report).
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
- 45885 · Saint Marys70% 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. Marys City 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. Marys City.
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
St. Marys City's own pages: cityofstmarys.net
Notable facts: cityofstmarys.net, cityofstmarys.net, cityofstmarys.net, cityofstmarys.net
History: cityofstmarys.net, cityofstmarys.net, cityofstmarys.net, cityofstmarys.net
Water quality: cityofstmarys.net
Planned work: cityofstmarys.net, cityofstmarys.net
Water pressure: cityofstmarys.net, cityofstmarys.net
Capital projects: cityofstmarys.net, cityofstmarys.net, cityofstmarys.net, cityofstmarys.net
Rates: cityofstmarys.net, cityofstmarys.net, cityofstmarys.net
Sewers: cityofstmarys.net, cityofstmarys.net, cityofstmarys.net, cityofstmarys.net
Treatment: cityofstmarys.net, cityofstmarys.net, cityofstmarys.net
Supply stress: wwwapp.epa.ohio.gov, cityofstmarys.net, cityofstmarys.net