Water system
St. Clairsville, City Of
EPA ID OH0701516 · Belmont County · 5,097 people served · owned by a local government
St. Clairsville, City Of treats its own water from St. Clairsville Main & Provident Reservoirs (local runoff).
The system's record
Also purchases some water from Belmont Co. Sanitary District 3 (Ohio River valley aquifer (wells)).
- Water bodies
- St. Clairsville Municipal (Main) Reservoir, St. Clairsville Provident Reservoir
- Raw intakes
- St. Clairsville Provident Reserv
St. Clairsville Reserv - Serves
- 5,097 people · Belmont County
- EPA ID
- OH0701516
City normally treats its own Main and Provident Reservoirs (small local-drainage impoundments) as primary source; purchased Belmont County water (itself groundwater from a well north of Bellaire) is used as backup/supplement, especially during recent low-reservoir-level periods.
About this area's water

Did you know
- The city's two reservoirs are named, plainly, 'Main' and 'Provident' — and when the main one runs low the city pumps water from Provident through a pipeline all the way across town into the main reservoir.
- Its drought insurance is somebody else's aquifer: the Belmont County Water and Sewer District's well water arrives already treated and goes straight into the city's water towers.
- The backup is turning into a habit — the county connection is normally used about 12 days a year, but in 2025 it ran 115 days and delivered 25.4 million of the roughly 172 million gallons the city put out.
- In 2019, with the reservoir down 8 to 10 feet, the mayor wanted to sell the whole system to Aqua Ohio; council members and two mayoral candidates pushed back, and the city still owns and runs it today.
Source: stclairsville.commariettatimes.comtimesleaderonline.com
History6
- 1796The settlement is established as Newellstown.
- 1802Renamed St. Clairsville in honor of Gen. Arthur St. Clair, governor of the Northwest Territory; it is the seat of Belmont County.
- 2016An October drought forces the city to draw on the Provident Reservoir for a limited time — the only prior use officials could recall before 2019.
- 2019Drought drops the main reservoir 8 to 10 feet, roughly a 50% loss on a reservoir that holds about 27 million gallons and is not much more than 16 feet deep; the city prepares to take its full…
- 2024A statewide drought that began in mid-June pushes the reservoir to the lowest level the service director had seen in ten years (longtime employees recalled lower levels in the late 1990s and early…
- 2025An underdrain failure in the plant's second filter causes treatment-technique violations for inadequate filtration in October and December, with turbidity peaking at 12.83 NTU; the city operates on a…
Source: stclairsville.comtimesleaderonline.commariettatimes.com
Treatment & pressure
How it is treated
The city treats its own surface water from two small local-runoff impoundments: the main reservoir on Reservoir Road and the Provident Reservoir on Vineyard Road, north of the city. Conventional filtration and chlorination; fluoride is present at up to 1.41 ppm and free chlorine averaged 1.38 ppm…
Source: stclairsville.comstclairsville.com
Water pressure
Not published. No distribution pressure figures appear in the city's CCR, rate schedule or department pages.
What it costs
$16.51 per 1,000 gallons
Typical household bill about $83 a month for water.
Rising-block schedule effective Sept. 5, 2025. Residential/commercial inside the city: $15.58 per 1,000 gallons for the first 2,000; $16.74 for the next 2,000; $17.89 for the next…
Source: stclairsville.com
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Turbidity VIOLATION. Range 0.04-12.83 NTU; lowest monthly percentage of samples meeting the limit was 97%. Caused by an… | 12.83 NTU | 0.3 NTU in 95%… | 2025 |
| Total organic carbon (removal ratio) VIOLATION. Range of monthly ratios 0.81-1.42; a value below 1 means the required percentage of TOC was not removed. | 0.81 ratio… | TT | 2025 |
| Haloacetic acids (HAA5) Range 46.7-59.3 ppb — the running average sits close to the limit and individual results reached 59.3. By-product of… | 52.83 ppb | 60 ppb (MCL) | 2025 |
| Total trihalomethanes (TTHM) Range 30.70-73.5 ppb; by-product of chlorination. | 55.78 ppb | 80 ppb (MCL) | 2025 |
| Fluoride Range 0.55-1.41 ppm. | 1.41 ppm | 4 ppm (MCL) | 2025 |
| Nitrate Range 0.14-1.64 ppm; runoff from fertilizer and leaching from septic systems. | 1.64 ppm | 10 ppm (MCL) | 2025 |
| Total chlorine Range 1.13-1.74 ppm. | 1.38 ppm | 4 ppm (MRDL) | 2025 |
| Barium Discharge of drilling wastes and from metal refineries; erosion of natural deposits. | 0.05 ppm | 2 ppm (MCL) | 2025 |
| Selenium Discharge from petroleum and metal refineries; erosion of natural deposits; mine discharge. | 3.75 ppb | 50 ppb (MCL) | 2025 |
| Chromium Discharge from steel and pulp mills; erosion of natural deposits. | 1.03 ppb | 100 ppb (MCL) | 2025 |
Source: stclairsville.com
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2026 (action level 15 ppb).
EPA health-based violations since 2015:
- 2025Total coliform · treatment technique violation · known
- 2024Haloacetic acids (HAA5) · exceeded a maximum contaminant level · measured 0.065 MG/L (limit 0.06 MG/L) · returned to compliance
- 2019Ground Water Rule · treatment technique violation · returned to compliance
EPA's count of 4 includes 1 repeat quarterly violation of the problems listed.
19 violations of any kind logged since 2020, 16 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans8
Recent and current work
- Belmont County backup water purchase agreement · 2019 · completed
The city began buying up to its full contractual 325,000 gallons a day from the Belmont County Water and Sewer District during the 2019 drought; by 2024 the… - Water Distribution Improvement Project (Phase I) · 2025 · under construction
Referenced in the 2025 CCR: service line materials were verified by visual inspection by James White Construction as the distribution system replacement… - Ohio EPA-mandated sanitary sewer smoke testing · 2026 · under construction
Smoke testing of sanitary sewer lines resumed Sept. 8-11, 2026 on Orchard Drive, all of Spring Park, and East Main Street from Orchard Drive to Commons…
Source: stclairsville.comstclairsville.comtimesleaderonline.com
Planned or needed
- Filter No. 2 underdrain replacement and backwash pressure gauges · 2026 · needed
Corrective action for the 2025 turbidity treatment-technique violation: the filter has been taken out of service, the failed underdrain system will be… - Water Distribution Improvement Project - Phase II · 2026 · planned
Ordinance 2026-30 (Aug. 18, 2026) directs the Director of Public Services to solicit competitive bids; no cost is published. - Efaw Lift Station Project (sanitary sewer) · 2026 · planned
Ordinance 2026-29 authorizes execution of a notice of award and contract with the James White Construction Company; no contract amount is published on the city… - Reservoir intake sediment removal · $1 million · 2019 · needed
The plant's lower intake is plugged under an estimated 10 to 12 feet of sediment and would require a diver; the then-service director called it 'probably a… - Broader water plant and distribution system upgrades · 2019 · needed
Ohio EPA mandated upgrades after finding algal blooms capable of producing toxins; the mayor put plant and distribution upgrades 'in the tens of millions of…
Supply stress
High. The city depends on two small, rain-fed local impoundments with no river or aquifer of its own — the main reservoir holds only about 27 million gallons and is barely 16 feet deep — and it has drawn down hard in the 2016, 2019 and 2024 droughts. Its only fallback is purchased Belmont County groundwater, capped by agreement (325,000…
Source: stclairsville.commariettatimes.comtimesleaderonline.com
Sewers
Sanitary
The city runs its own combined Water and Wastewater Department under Water Superintendent Mike Reed, treating its wastewater locally, with billing through the Municipal Utilities Office. Sewer rates effective Sept. 5, 2025, residential/commercial inside city: $14.07 per 1,000 gallons for the first 2,000; $14.91 for the next 2,000; $15.76…
Storm
Not published. The city publishes no stormwater utility fee, CSO inventory or flooding information; the Ohio EPA-mandated smoke testing implies an inflow-and-infiltration problem in the separate sanitary system, but no storm sewer detail is available.
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
- 43950 · Richland Township and Saint Clairsville73% of residents
- 43905 · Colerain Township and Barton30% of residents
Also present in 2 more ZIP codes
- 43912 · Pease Township and Bridgeport0% of residents
- 43906 · Bellaire0% 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. Clairsville, City 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 St. Clairsville, City Of.
Photograph
On the map
Show this system's territory on the map — 4 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
St. Clairsville, City Of's own pages: mariettatimes.com, timesleaderonline.com
Notable facts: stclairsville.com, mariettatimes.com, timesleaderonline.com
History: stclairsville.com, timesleaderonline.com, mariettatimes.com, stclairsville.com
Water quality: stclairsville.com
Planned work: stclairsville.com, stclairsville.com, stclairsville.com, timesleaderonline.com
Capital projects: stclairsville.com, stclairsville.com, timesleaderonline.com, mariettatimes.com
Rates: stclairsville.com
Sewers: stclairsville.com, stclairsville.com, stclairsville.com
Treatment: stclairsville.com, stclairsville.com
Supply stress: stclairsville.com, mariettatimes.com, timesleaderonline.com