Water system

Oberlin Water Department

EPA ID OH4700911 · Lorain County · 8,600 people served · owned by a local government

West Branch Black River, via Oberlin Upground Reservoir
Inland river

Oberlin Water Department treats its own water from West Branch Black River, via Oberlin Upground Reservoir.

The system's record

West Branch Black River, via Oberlin Upground Reservoir
Inland river
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

Tappan Square in downtown Oberlin, Ohio
Tappan Square in downtown Oberlin, OhioPhoto: Daderot, Public domain · Wikimedia Commons
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
ContaminantLevelLimitYear
Total Trihalomethanes (TTHM)
Running annual average. Individual detections ranged 43.60 to 121.8 ppb. No violation, but the compliance average sits…
74.68 ppb80 ppb2025
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 ppb60 ppb2025
Total Chlorine
Range 1.2-1.6 ppm.
1.4 ppm4 ppm (MRDL)2025
Fluoride
Range 0.77-1.09 ppm; the plant fluoridates to about 1 mg/L.
1.03 ppm4 ppm2025
Nitrate
Range 0.29-1.11 ppm. Well below limit.
1.11 ppm10 ppm2025
Barium
Single sample; no range reported.
0.016 ppm2 ppm2025
Atrazine
Range 0.15-0.62 ppb. Agricultural herbicide, well under the limit.
0.3 ppb3 ppb2025
Simazine
Range 0.062-0.110 ppb.
0.083 ppb4 ppb2025
Turbidity
Highest recorded value; 100% of monthly samples met the standard. Range 0.02-0.21 NTU.
0.21 NTUTT: 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 ratioTT: 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…

Source: oberlinreview.orgchroniclet.comcityofoberlin.com

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…

Source: cityofoberlin.comcityofoberlin.com

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.

Source: cityofoberlin.comcityofoberlin.com

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

Also present in 1 more ZIP code

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

Tappan Square in downtown Oberlin, Ohio
Tappan Square in downtown Oberlin, OhioPhoto: Daderot · Public domain · Wikimedia Commons

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

Cite this page

Cite this page as:

Cracked Buckeye (Open Shower Co), "Oberlin Water Department · OH4700911", https://crackedbuckeye.com/water/OH4700911/, built 2026-09-16, accessed [date].

Machine-readable: /api/water/OH4700911.json (open JSON, CC BY 4.0 for the compilation; the underlying records keep their own terms) · How to cite · Report a correction · Built 2026-09-16