Water system
Conneaut
EPA ID OH0400411 · Ashtabula County · 12,538 people served · owned by a local government
Conneaut treats its own water from Lake Erie.
The system's record
- Water bodies
- Lake Erie
- Raw intakes
- Conneaut Lake Erie
- Serves
- 12,538 people · Ashtabula County
- EPA ID
- OH0400411
Own intake directly from Lake Erie; no wells or purchased water listed.
About this area's water
Did you know
- Conneaut's drinking water starts about 1,900 feet out in Lake Erie, at roughly 20 feet of depth, through an intake structure with three underwater cribs that has been in service since 1933.
- The first chemical added is not a disinfectant: potassium permanganate is fed right at the intake specifically to keep invasive zebra mussels from clogging it.
- Conneaut Harbor is a dry-bulk coal port sitting beside the water intake's protection zone - about 5.7 million tons of coal moved through it in the 2002 navigation season, down from more than 7 million in 2001.
- Conneaut is Ohio's northeasternmost city, in the corner where the state meets Pennsylvania on the Lake Erie shore.
- In 2025 a single one of 30 lead tap samples came back at 430 ppb - 29 times the action level - yet the system's 90th-percentile result was 2.2 ppb, so no exceedance was triggered.
History6
- 1933The Conneaut water treatment facility and its Lake Erie intake structure - one intake with three cribs, about 1,900 feet offshore in roughly 20 feet of water - were constructed.
- 1991-2002Ohio EPA compliance monitoring of treated water over this period found no contaminants of concern tied to the Lake Erie source, per the 2003 source water assessment.
- 2003Ohio EPA published the Drinking Water Source Assessment for Conneaut, identifying 24 oil/gas production wells and 33 potential contaminant sources in the Potential Influence Zone, and calculating an…
- 2025-01-22System failed to report manganese: the sample was shipped to a state lab and lost in transit during a severe winter storm.
- 2025-05-15System failed to report sample results to Ohio EPA within the required time frame; the city enacted a more comprehensive management plan in response.
- 2025System held an unconditioned license to operate and reported no violations affecting consumer health; 82 different contaminants were sampled.
Treatment & pressure
How it is treated
Lake Erie water enters through a single 1933 intake structure with three cribs, about 1,900 feet offshore at roughly 20 feet depth (about one-third mile north of the plant), where a potassium permanganate feed controls zebra mussels. Treatment is screening, chemical addition, rapid mixing…
Source: webgen1files.revize.comwebgen1files.revize.com
Water pressure
Not published. Four elevated storage tanks and one standpipe hold approximately 1.97 million gallons; no distribution pressure figure is published.
Source: webgen1files.revize.com
What it costs
$9.94 per 1,000 gallons
Typical household bill about $48 a month for water.
2026 tiered residential schedule for City of Conneaut sections I, II, III and V: $27.75 minimum for the first 2,000 gallons, then $9.94 per 1,000 gallons for the next 8,000, $9.04…
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total Trihalomethanes (TTHM) Range 9.40-34 ppb; disinfection by-product; no violation. | 32.85 ppb | 80 | 2025 |
| Haloacetic Acids (HAA5) Range 0-31.8 ppb; disinfection by-product; no violation. | 22.68 ppb | 60 | 2025 |
| Total Chlorine Range 1.37-1.75 ppm; disinfectant residual. | 1.63 ppm | MRDL 4 | 2025 |
| Fluoride Range 0.86-1.16 ppm; natural deposits plus additive. | 0.99 ppm | 4 | 2025 |
| Barium Drilling wastes, metal refinery discharge, erosion of natural deposits. | 0.017 ppm | 2 | 2025 |
| Nitrate Range 0-0.500 ppm; well below the limit. | 0.500 ppm | 10 | 2025 |
| Turbidity Range 0.06-0.16 NTU; 100% of monthly samples met the limit. | 0.16 NTU | TT (treatment… | 2025 |
| Total Organic Carbon (removal ratio) Range 1.00-1.33; in compliance, but with little margin. | 1.09 ratio | TT (must exceed… | 2025 |
| Lead (90th percentile) 1 of 30 samples exceeded the 15 ppb action level, with the individual result reported at 430 ppb; no action-level… | 2.2 ppb | 15 (action… | 2025 |
| Copper (90th percentile) 1 of 30 samples exceeded the 1.3 ppm action level, with the individual result at 1.5 ppm; 90th percentile below the… | 0.43 ppm | 1.3 (action… | 2025 |
Source: webgen1files.revize.comconneautohio.gov
EPA compliance record
Lead at the tap: 90th-percentile result 2.2 ppb in 2025 (action level 15 ppb).
EPA health-based violations since 2015:
- 2016Ground Water Rule · treatment technique violation · known
2 violations of any kind logged since 2020, 2 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans2
Recent and current work
- Intake crib repairs · 2003 · completed
Two of the three intake cribs had recently been repaired as of the 2003 Ohio EPA source water assessment, with the third scheduled for maintenance that year.… - Wastewater Treatment Plant mercury reduction project
The city's wastewater page posts a mercury reduction project presentation and supporting material on mercury usage. No cost, schedule or completion date is…
Supply stress
The 2025 CCR states the Conneaut drinking water protection area is susceptible to contamination from municipal wastewater discharges, industrial wastewater discharges, atmospheric deposition, residential and urban runoff, contaminated river sediments, oil and gas production and transportation, and accidental releases from rail…
Sewers
Sanitary
City of Conneaut Wastewater Treatment Plant, 1206 Broad St. Ext. (440-593-7434). The 2003 source water assessment identifies municipal wastewater treatment discharge as one of the potential contaminant sources in the intake's protection area. The plant posts a mercury reduction project. Ohio EPA's 2022 rate survey lists an annual…
Storm
Not published. Ohio EPA's 2022 rate survey records no residential stormwater charge for Conneaut, and the city posts no stormwater utility or MS4 page; combined-vs-separate sewer status is not stated.
Source: conneautohio.govwebgen1files.revize.comdam.assets.ohio.gov
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
- 44030 · Conneaut72% of residents
Also present in 1 more ZIP code
- 44048 · Kingsville Township and Kingsville2% 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
Conneaut does not buy water from another system on record; it treats its own source water.
No other system is on record buying water from Conneaut.
Photograph
On the map
Show this system's territory on the map — 2 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
Conneaut's own pages: conneautohio.org
Notable facts: webgen1files.revize.com, webgen1files.revize.com
History: webgen1files.revize.com, webgen1files.revize.com
Water quality: webgen1files.revize.com, conneautohio.gov
Water pressure: webgen1files.revize.com
Capital projects: webgen1files.revize.com, conneautohio.gov
Rates: conneautohio.gov, dam.assets.ohio.gov
Sewers: conneautohio.gov, webgen1files.revize.com, dam.assets.ohio.gov
Treatment: webgen1files.revize.com, webgen1files.revize.com
Supply stress: webgen1files.revize.com, webgen1files.revize.com