Water system
Warren Water Authority
EPA ID OH4102903 · Jefferson County · 481 people served
Warren Water Authority buys its water from Yorkville Village.
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 · Warren Water Authority
Lead at the tap: 90th-percentile result 0 ppb in 2026 (action level 15 ppb).
EPA health-based violations since 2015:
- 2025Long Term 2 Enhanced Surface Water Treatment Rule · did not fix a deficiency the state found · returned to compliance
- 2024Lead and Copper Rule Revisions · lead service line inventory missing or incomplete (a records requirement, not a lead test result) · returned to compliance
13 violations of any kind logged since 2020: 5 for required testing that was missed or reported late; 6 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records); 2 health-based.
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 1 ZIP code
Serves
No ZIP code has Warren Water Authority on record as its main water supplier.
Also present in 1 more ZIP code
- 43943 · Warren Township and Rayland8% 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
Warren Water Authority buys its water from Yorkville Village, which buys from Tiltonsville.
No other system is on record buying water from Warren Water Authority.
What the records show about Warren Water Authority
Who runs it
EPA's record says Warren Water Authority has 178 service connections and serves 481 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 740-314-2629.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
Warren Water Authority 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 counts 2 health-based violations for Warren Water Authority since 2015. Health-based means a contaminant above its legal limit or a required treatment step not carried out. They fall into 2 separate problems (one contaminant or rule in one year); the table lists them all.
EPA logs 13 violations of any kind since 2020: 5 for required testing that was missed or reported late; 6 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records); 2 health-based.
| Year | Contaminant or rule | Kind | Measured | Limit | Status in EPA's record |
|---|---|---|---|---|---|
| 2025 | Long Term 2 Enhanced Surface Water Treatment Rule | did not fix a deficiency the state found | not on file | not on file | returned to compliance |
| 2024 | Lead and Copper Rule Revisions | lead service line inventory missing or incomplete (a records requirement, not a lead test result) | not on file | not on file | returned to compliance |
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 2026, the 90th-percentile lead result at Warren Water Authority was 0 ppb, under both the current 15 ppb action level and the 10 ppb level that applies from 2027. A result of 0 means at least nine in ten of the homes sampled had no lead detected.
The highest result on file is 7.6 ppb, in the period ending December 2021.
EPA has 5 sampling periods on file for Warren Water Authority since 2016, the first ending in 2018; 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 Warren Water Authority sent EPA, 180 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 0 |
| Unknown material | 0 |
| Not lead | 180 |
| All lines | 180 |
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 Warren Water Authority 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.
Disinfection byproducts
Chlorine that disinfects water also reacts with organic matter to form byproducts. Two groups have federal limits: total trihalomethanes (TTHM, 80 µg/L) and five haloacetic acids (HAA5, 60 µg/L), judged on running yearly averages at each sampling site.
For TTHM, the average of Warren Water Authority's samples in 2019, the last year it was sampled, was 23.7 µg/L. The worst yearly average was 56.4 µg/L and the highest single sample was 56.4 µg/L, from 6 samples taken from 2014 to 2019.
For HAA5, the average in the last year sampled was 0 µg/L. The worst yearly average was 8.6 µg/L and the highest single sample was 8.6 µg/L, from 6 samples.
| Byproduct | Limit | Latest yearly average | Worst yearly average | Highest sample | Samples |
|---|---|---|---|---|---|
| TTHM | 80 µg/L | 23.7 µg/L (2019) | 56.4 µg/L | 56.4 µg/L | 6 |
| HAA5 | 60 µg/L | 0 µg/L | 8.6 µg/L | 8.6 µg/L | 6 |
A yearly average of 0 means nothing was detected in that year's samples. EPA's file stops at 2019; Ohio EPA's Drinking Water Watch has newer results.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, distribution-system samples (non-detects counted as zero).
Nitrate, arsenic and radioactivity
The water Warren Water Authority 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 Warren Water Authority 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 Warren Water Authority 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.
Bacteria in the pipes
From 2012 to 2019, 0 of 96 routine total coliform samples taken in the distribution system at Warren Water Authority tested positive (0%); in 2019, the last year on file, 0 of 12 did.
A positive coliform test is a warning sign, not a violation by itself. E. coli is a sign that human or animal waste may have reached the water. Coliform counts are routine samples only; E. coli counts include repeat samples.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, distribution-system presence/absence tests for total coliform and E. coli.
Fluoride
The Ohio Department of Health's report to the CDC (My Water's Fluoride) says Warren Water Authority buys its water from Tiltonsville, a system that has fluoride from natural sources, but at a level below what is recommended for preventing tooth decay, and does not adjust it. The level it reports is 0.17 mg/L.
EPA's treatment table lists no fluoridation step at Tiltonsville, which treats the water Warren Water Authority buys.
Measured fluoride: every sample leaving the plants of Tiltonsville, which supplies Warren Water Authority, 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.
How well the service area is mapped
EPA estimated the service area of Warren Water Authority with a computer model rather than drawing it from the utility's map, so its edges are approximate.
Source: EPA Service Area Boundaries; resident estimate by this atlas from ZIP-code overlap.
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
EPA's own record for this system: Enforcement and Compliance History report for OH4102903 (EPA ECHO).
