Water system
Jefferson Co.san.dist.-g
EPA ID OH4100903 · Jefferson County · 990 people served
Jefferson Co.san.dist.-g buys its water from Tiltonsville.
The system's record
- Active wells
- 2
- Serves
- 1,372 people · Jefferson County
- EPA ID
- OH4102712
About this area's water Tiltonsville
Did you know
- Tiltonsville sits on land purchased in 1796 by John Tilton, for whom the village is named.
- The village is home to Hodgen's Cemetery Mound, a burial mound built by the prehistoric Adena culture.
- Tiltonsville is referenced in poet James Wright's poem 'Autumn Begins in Martins Ferry, Ohio,' about the neighboring Ohio River town.
- Population peaked around 2,360 in 1940 and has declined by nearly half since, to about 1,259 in 2020 — typical of Ohio River valley steel-belt towns.
Source: en.wikipedia.org
History5
- 1796John Tilton purchases roughly 900 acres at a federal land auction in Pittsburgh (Nov. 25, 1796, for $3,623.76) that would become the village.
- 1806Tilton lays out the village along the Ohio River in Jefferson County.
- 1852Post office opens as 'Tiltonville'.
- 1875Post office/village name changes to 'Tiltonsville'.
- unknownWe found no published date for when the village's two-well municipal water system was built or last upgraded.
Source: en.wikipedia.org
Treatment & pressure
How it is treated
Tiltonsville treats its own water drawn from 2 groundwater wells. We found no CCR or plant description.
Water pressure
Not published — no CCR or engineering document for OH4102712 was found.
Water quality & impurities
EPA compliance record · Jefferson Co.san.dist.-g
Lead at the tap: 90th-percentile result 1.2 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
EPA compliance record · Tiltonsville (treats the water)
Lead at the tap: 90th-percentile result 0.5 ppb in 2026 (action level 15 ppb); copper 2.09 mg/L (action level 1.3).
EPA record: no health-based violations since 2015.
4 violations of any kind logged since 2020: 1 for required testing that was missed or reported late; 3 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records).
Supply stress
We found no water-stress findings specific to this system. Jefferson County Ohio River valley communities have historically faced groundwater contamination concerns tied to legacy steel/coal industry and river-adjacent aquifers.
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources. Little is published about this system, so details are thin.
Present in 0 ZIP codes
Serves
No ZIP code has Jefferson Co.san.dist.-g on record as its main water supplier.
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
Jefferson Co.san.dist.-g buys its water from Tiltonsville.
No other system is on record buying water from Jefferson Co.san.dist.-g.
What the records show about Jefferson Co.san.dist.-g
Who runs it
EPA's record says Jefferson Co.san.dist.-g has 353 service connections and serves 990 people.
EPA classes it as a community water system, one that serves the same residents all year.
Its office telephone on EPA's record is 740-283-8577.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
Jefferson Co.san.dist.-g buys water that Tiltonsville treats first, so the steps that count are the seller's. EPA's treatment table registers these steps for Tiltonsville: corrosion control, chlorine disinfection, and iron and manganese removal.
The list is what each system registered with EPA for treatment plants EPA still shows as active, and it can lag a plant upgrade.
Source: EPA Safe Drinking Water Information System (SDWIS) treatment table (EPA Envirofacts, pulled September 2026).
Violations
EPA's record shows no health-based violations for Jefferson Co.san.dist.-g since 2015.
EPA logs no violations of any kind for Jefferson Co.san.dist.-g since 2020.
Source: EPA Safe Drinking Water Information System (SDWIS) violation records: health-based violations with compliance periods beginning in 2015 or later, all violations from 2020 or later (EPA Envirofacts, pulled September 2026).
Lead and copper at the tap
In the sampling period ending June 2025, the 90th-percentile lead result at Jefferson Co.san.dist.-g was 1.2 ppb, under both the current 15 ppb action level and the 10 ppb level that applies from 2027.
EPA has 2 sampling periods on file for Jefferson Co.san.dist.-g since 2016, the first ending in 2024; no period was above 10 ppb.
Every water system has to inventory its service lines, the pipes from the main to each building. In the inventory Jefferson Co.san.dist.-g sent EPA, 590 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 0 |
| Unknown material | 590 |
| Not lead | 0 |
| All lines | 590 |
Systems sample taps in the homes most likely to have lead pipes or solder. The 90th-percentile result is the level nine in ten of the sampled homes were at or below. Lead comes mostly from service lines and house plumbing, not the source water, so a low result for the system does not clear an old house.
EPA's dashboard status for this inventory: reported all required service line types.
Source: EPA Safe Drinking Water Information System (SDWIS) lead and copper 90th-percentile results (EPA Envirofacts), sampling periods ending 2016 or later; EPA's service line inventory dashboard, Ohio's 2026 Q2 submission.
PFAS
The water Jefferson Co.san.dist.-g buys is treated by Tiltonsville, so the results below are Tiltonsville's.
Ohio EPA's own statewide sampling tested 1 plant of Tiltonsville (latest sample July 2020). Not one of the six PFAS tested (PFOA, PFOS, PFHxS, PFNA, GenX and PFBS) was detected.
Ohio EPA's current sampling status map lists 1 plant of Tiltonsville as sampled, most recently March 2026.
PFAS are the 'forever chemicals' from firefighting foam, plating shops and non-stick coatings. Results are for water leaving the plant, not your tap.
Source: EPA UCMR 5 occurrence data (final release, August 2026); Ohio EPA statewide PFAS sampling, 2019 to 2021, and its sampling status map.
Nitrate, arsenic and radioactivity
The water Jefferson Co.san.dist.-g buys is treated by Tiltonsville, so the results below are Tiltonsville's.
Nitrate: the highest of 8 samples was 2.45 mg/L (as nitrogen), in 2019, the last year sampled. No sample was over the limit of 10 mg/L. Nitrate above 10 is unsafe for infants.
Arsenic was not detected in 3 samples (limit 10 µg/L).
| Contaminant | Samples | Highest result | Limit | Samples over limit |
|---|---|---|---|---|
| Nitrate (as nitrogen) | 8 | 2.45 mg/L | 10 mg/L | 0 |
| Arsenic | 3 | not detected | 10 µg/L | 0 |
Measured in finished water: at the plant's entry points and in the distribution system; raw well and intake samples are left out. Non-detects count as zero.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Tiltonsville.
Solvents and fuels
The water Jefferson Co.san.dist.-g buys is treated by Tiltonsville, so the results below are Tiltonsville's.
EPA's file holds results for all six solvent and fuel compounds it checked. Benzene, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene, tetrachloroethylene, and vinyl chloride were not detected in 3 samples each.
| Compound | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|
| Benzene | 5 µg/L | 3 | 0 of 3 | not detected | 0 |
| Carbon tetrachloride | 5 µg/L | 3 | 0 of 3 | not detected | 0 |
| 1,2-dichloroethane | 5 µg/L | 3 | 0 of 3 | not detected | 0 |
| Trichloroethylene (TCE) | 5 µg/L | 3 | 0 of 3 | not detected | 0 |
| Tetrachloroethylene (PCE) | 5 µg/L | 3 | 0 of 3 | not detected | 0 |
| Vinyl chloride | 2 µg/L | 3 | 0 of 3 | not detected | 0 |
"Not detected" means the lab's result was below what its method can measure, not that the compound is absent. Non-detects count as zero in the highest-result column.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Tiltonsville.
Farm chemicals and metals
The water Jefferson Co.san.dist.-g buys is treated by Tiltonsville, so the results below are Tiltonsville's.
EPA's file holds results for 8 of the nine herbicides and metals it checked. Detected: cadmium in 1 of 3 samples, highest 1.8 µg/L (limit 5); barium in 3 of 3 samples, highest 55.9 µg/L (limit 2,000). Not detected: atrazine, alachlor, chromium, mercury, selenium, and thallium, in 3 samples each.
| Substance | Kind | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|---|
| Atrazine | Farm chemical | 3 µg/L | 3 | 0 of 3 | not detected | 0 |
| Alachlor | Farm chemical | 2 µg/L | 3 | 0 of 3 | not detected | 0 |
| Chromium | Metal | 100 µg/L | 3 | 0 of 3 | not detected | 0 |
| Cadmium | Metal | 5 µg/L | 3 | 1 of 3 | 1.8 µg/L | 0 |
| Barium | Metal | 2,000 µg/L | 3 | 3 of 3 | 55.9 µg/L | 0 |
| Mercury | Metal | 2 µg/L | 3 | 0 of 3 | not detected | 0 |
| Selenium | Metal | 50 µg/L | 3 | 0 of 3 | not detected | 0 |
| Thallium | Metal | 2 µg/L | 3 | 0 of 3 | not detected | 0 |
Non-detects count as zero in the highest-result column.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Tiltonsville.
Fluoride
EPA's treatment table lists no fluoridation step at Tiltonsville, which treats the water Jefferson Co.san.dist.-g buys.
Measured fluoride: every sample leaving the plants of Tiltonsville, which supplies Jefferson Co.san.dist.-g, in 2018 was below the 0.2 mg/L reporting limit; detected samples in earlier years ran from 0.22 to 0.25 mg/L across 3 samples in 2012 to 2019.
The recommended level for preventing tooth decay is 0.7 mg/L; the federal limit is 4 mg/L. The treatment list is what each system registered with EPA and can lag a plant upgrade.
Source: CDC My Water's Fluoride (fluoridation status as reported by the Ohio Department of Health, fetched September 2026); EPA Safe Drinking Water Information System (SDWIS) treatment table; EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, entry-point fluoride samples.
On the map
Show this system's territory on the map — 0 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
EPA's own record for this system: Enforcement and Compliance History report for OH4100903 (EPA ECHO).
