Water system
Oberlin Water Department
EPA ID OH4700911 · Lorain County · 8,600 people served · owned by a local government
Oberlin Water Department treats its own water from West Branch Black River, via Oberlin Upground Reservoir.
The system's record
- Water bodies
- West Branch Black River, Oberlin Upground Reservoir
- Raw intakes
- Oberlin W Br Black River Reservo
River - Serves
- 8,600 people · Lorain County
- EPA ID
- OH4700911
River intake supplies the plant, supplemented by the upground reservoir (386 MG) and two elevated tanks; emergency interconnect exists with Rural Lorain County Water Authority but was unused in 2025.
About this area's water

Did you know
- Oberlin built the first municipal lime-soda water softening plant in America in 1903, at the Morgan Street Water Works. The site is now a city park, and the reservoir beside it is being reshaped into a wetland.
- The 1886 water works bond was $50,000 — roughly $925,000 today, and about eight years of the town's typical spending. Within a year the Water Works was the second-largest line in the town budget, behind only the Street…
- Voters approved the system 437 to 100 in April 1886, after downtown fires in 1882 and 1886; the fire chief's verdict on 1882 was that the water "gave out entirely."
- Oberlin's 2025 TTHM running average of 74.68 ppb is within 7% of the federal 80 ppb limit, with individual samples as high as 121.8 ppb — the price of disinfecting organic-rich river water.
- The plant softens Oberlin's water to about 160 mg/L, or 9.3 grains per gallon, and adds phosphate for corrosion control; the most recent lead round came back at a 90th percentile of zero.
Source: oberlinheritagecenter.orgwww2.oberlin.educityofoberlin.com
History6
- 1882A fire on March 10 burned through a downtown block; the fire chief reported that the water supply "gave out entirely," exposing the town's lack of firefighting water.
- 1886After a second devastating downtown fire that spring, voters approved a $50,000 water works bond 437 to 100 in April. The reservoir built about a mile southwest of town covered ten acres at 16 feet…
- 1887Water service inaugurated December 23. By that year the Water Works was already the town's second-largest budget item, behind only the Street Department.
- 1888First major fire test of the new system; the local press reported the water works a success.
- 1903Oberlin installed the first municipal lime-soda water softening plant in America at the Morgan Street Water Works, softening water conveyed from the Vermilion River by way of the Kipton Reservoir.…
- 1960A new plant on Parsons Road drawing from the Black River replaced the Morgan Street works; the Morgan Street and Kipton reservoirs left drinking-water service in the early 1960s.
Source: www2.oberlin.eduoberlinheritagecenter.orgcityofoberlin.com
Treatment & pressure
How it is treated
Surface water from the West Branch of the Black River, supplemented by the city's reservoir and two elevated storage tanks, is treated at the 2.25 MGD plant at 43885 Parsons Road. The train is coagulation with aluminum sulfate and settling, lime-and-soda-ash softening (finished hardness about 160…
Source: cityofoberlin.comcityofoberlin.com
Water pressure
Not published. The city documents over 40 miles of water line serving roughly 3,000 homes and businesses, a 2.25 MGD plant and two elevated storage tanks, but publishes no system…
Source: cityofoberlin.com
What it costs
$15.84 per 1,000 gallons
Typical household bill about $79 a month for water.
Water only. Effective 2/1/2026, inside city: $11.85 per 100 cubic feet, with a minimum monthly bill of $35.55 based on minimum usage of 300 cubic feet (there is no separate fixed…
Source: cityofoberlin.com
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total Trihalomethanes (TTHM) Running annual average. Individual detections ranged 43.60 to 121.8 ppb. No violation, but the compliance average sits… | 74.68 ppb | 80 ppb | 2025 |
| Haloacetic Acids (HAA5) Range of detections printed as 9.6-18.5 ppb; the CCR's Level Found of 18.9 sits just above its own printed range… | 18.9 ppb | 60 ppb | 2025 |
| Total Chlorine Range 1.2-1.6 ppm. | 1.4 ppm | 4 ppm (MRDL) | 2025 |
| Fluoride Range 0.77-1.09 ppm; the plant fluoridates to about 1 mg/L. | 1.03 ppm | 4 ppm | 2025 |
| Nitrate Range 0.29-1.11 ppm. Well below limit. | 1.11 ppm | 10 ppm | 2025 |
| Barium Single sample; no range reported. | 0.016 ppm | 2 ppm | 2025 |
| Atrazine Range 0.15-0.62 ppb. Agricultural herbicide, well under the limit. | 0.3 ppb | 3 ppb | 2025 |
| Simazine Range 0.062-0.110 ppb. | 0.083 ppb | 4 ppb | 2025 |
| Turbidity Highest recorded value; 100% of monthly samples met the standard. Range 0.02-0.21 NTU. | 0.21 NTU | TT: 0.3 NTU in… | 2025 |
| Total Organic Carbon (removal ratio) Range 1.33-2.15. A value above 1 means the required TOC removal was achieved. | 1.74 ratio | TT: must exceed… | 2025 |
Source: cityofoberlin.com
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2023 (action level 15 ppb).
EPA health-based violations since 2015:
- 2024Total coliform · treatment technique violation · returned to compliance
- 2017Total trihalomethanes (TTHM) · exceeded a maximum contaminant level · measured 0.081 MG/L (limit 0.08 MG/L) · returned to compliance
1 violation of any kind logged since 2020, 0 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans1
Recent and current work
- Morgan Street Reservoirs restructuring and wetland conversion · $300,000 · 2020 · under construction
City-commissioned Alternatives Analysis Report dated 09/21/2020. Council approved converting the upper rectangular reservoir into a wetland with paths and…
Supply stress
Ohio EPA's 2002 source water assessment, still cited in the 2026 CCR, treats all Ohio surface waters as susceptible to contamination: they are accessible, easily contaminated, and move fast enough that an upstream spill can reach the intake with little warning. Oberlin's protection area holds a moderate number of potential contaminant…
Sewers
Sanitary
The city's Water Environment Protection Facility is a 1.5 MGD Class IV plant using physical, chemical and biological treatment, discharging to Plum Creek; Class B biosolids are land-applied to agricultural ground at agronomic rates. Sanitary sewer is billed separately from water: inside city $7.61 per 100 cubic feet with a $22.83 monthly…
Storm
Not documented in the city sources reviewed.
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
- 44074 · Oberlin77% of residents
Also present in 1 more ZIP code
- 44050 · Lagrange Township and Lagrange1% 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
Oberlin Water Department does not buy water from another system on record; it treats its own source water.
No other system is on record buying water from Oberlin Water Department.
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
Oberlin Water Department's own pages: cityofoberlin.com, www2.oberlin.edu
Notable facts: oberlinheritagecenter.org, www2.oberlin.edu, cityofoberlin.com, cityofoberlin.com
History: www2.oberlin.edu, oberlinheritagecenter.org, cityofoberlin.com, oberlinreview.org
Water quality: cityofoberlin.com
Water pressure: cityofoberlin.com
Capital projects: oberlinreview.org, chroniclet.com, cityofoberlin.com
Rates: cityofoberlin.com
Sewers: cityofoberlin.com, cityofoberlin.com
Treatment: cityofoberlin.com, cityofoberlin.com
Supply stress: cityofoberlin.com, cityofoberlin.com