Water system
Dillonvale
EPA ID OH4100512 · Jefferson County · 665 people served · owned by a local government
Dillonvale treats its own water from Groundwater wells (2 wells).
The system's record
The Ohio Department of Health's fluoridation report (CDC My Water's Fluoride) lists Dillonvale as buying its water from Mount Pleasant; EPA's inventory shows its own sources as primary with Mount Pleasant as an emergency connection. The two records may reflect a blend or a recent switch.
- Active wells
- 2
- Serves
- 665 people · Jefferson County
- EPA ID
- OH4100512
About this area's water
Did you know
- Dillonvale was originally platted as "Annapolis" in 1816 and only took its current name after the railroad arrived in 1889.
- The village lies within the Weirton-Steubenville metropolitan area, part of Ohio's Appalachian coal country.
- Population has fallen more than 60% since its true 1940 peak of 1,652 residents (not 1920, as an earlier draft had it).
- The village runs a dedicated wastewater treatment plant on Township Road 1197, separate from its water department.
History3
- 1816Community founded as "Annapolis" in Jefferson County.
- 1889Wheeling and Lake Erie Railway arrived; town replatted and renamed Dillon, later Dillonvale.
- 1940Population peaked at 1,652 before a long decline to under 600 today (corrected from the prior draft's 1920/1,643 — Wikipedia's census table shows 1940 as the true peak year).
Source: en.wikipedia.org
Treatment & pressure
How it is treated
Dillonvale draws on two groundwater wells; detected disinfection byproducts (TTHM 5.03 ppb, well under the 80 ppb limit, per EWG's EPA-sourced data) imply chlorination, though no published treatment-train description was found. The village runs separate Water and Sewer Departments; the Sewer…
Source: ewg.orgvillageofdillonvale.comtap-truth.com
Water pressure
Not published — no CCR or engineering-report pressure figures were located.
What it costs
No metered rate schedule was found. Water bills are issued bimonthly and bundle a trash charge on the same statement; a 10% penalty applies to balances unpaid past the due date…
Source: villageofdillonvale.com
Water quality & impurities7
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total trihalomethanes (TTHM) Well below the legal limit. | 5.03 ppb | 80 | 2018-202… |
| Nitrate Under 10% of the legal limit. | 0.961 ppm | 10 | 2018-202… |
| Combined radium (-226/-228) Well under the legal limit; naturally occurring. | 0.36 pCi/L | 5 | 2018-202… |
| Bromoform | 2.60 ppb | none (no… | 2018-202… |
| Dibromochloromethane | 1.93 ppb | none (no… | 2018-202… |
| Bromodichloromethane | 0.625 ppb | none (no… | 2018-202… |
| Barium Well below the legal limit. | 22.0 ppb | 2000 | 2018-202… |
Source: ewg.org
EPA compliance record
Lead at the tap: 90th-percentile result 2.4 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
9 violations of any kind logged since 2020, 9 of them paperwork (monitoring, reporting, public notice or consumer report).
Supply stress
No drought, PFAS, or acute nitrate stress was documented. Nitrate was detected at 0.961 ppm, under 10% of the 10 ppm MCL — unremarkable. Combined radium-226/228 measured 0.36 pCi/L, well under the 5 pCi/L limit. Dillonvale sits in the historic Ohio River Valley coal belt within the Weirton-Steubenville metro area, but no documented case…
Source: ewg.org
Sewers
Sanitary
Confirmed: Dillonvale operates its own Sewer Department and a wastewater treatment plant at 19 Township Rd. 1197, distinct from the Water Department (villageofdillonvale.com/services) — this corrects the prior draft's 'not confirmed by a source read.'
Storm
Not published in sources reviewed.
Source: villageofdillonvale.com
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 2 ZIP codes
- 43948 · Smithfield Township and Smithfield100% of residents
- 43917 · Smithfield Township and Dillonvale23% of residents
Also present in 1 more ZIP code
- 43943 · Warren Township and Rayland1% 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
Dillonvale does not buy water from another system on record; it treats its own source water.
No other system is on record buying water from Dillonvale.
Photograph
On the map
Show this system's territory on the map — 3 ZIP codes 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, villageofdillonvale.com
History: en.wikipedia.org
Water quality: ewg.org
Rates: villageofdillonvale.com
Sewers: villageofdillonvale.com
Treatment: ewg.org, villageofdillonvale.com, tap-truth.com
Supply stress: ewg.org