Cleveland's unsoftened Lake Erie water runs 105 to 130 mg/L, and lake-effect snow loads against glass, sharply heavier on the rising ground to the east.
Cleveland's Lake Erie water is not softened and sits at the line between moderately hard and hard, about seven grains, so a quick squeegee keeps spots down. Lake-effect snow piles against glass, much heavier on the higher ground to the east, and June to September is the time to wash. Double houses hide half their glass from the street, so count every pane before accepting a quote of $300 to $510 for a single-story exterior.
Cleveland draws unsoftened Lake Erie water and its 2025 report puts hardness at 105 to 130 mg/L, 117 on average — about seven grains per gallon. Worth knowing which ladder that is being read on: the utility calls it moderate using the trade association's scale, while on the USGS scale the top of that range is where hard begins. Practically it behaves like the top of the moderate band — enough to leave a visible spot on glass that dries in sun before it is bladed, not enough to need anything beyond a wetter pass and a prompt detail.
| Hardness | 105–130 mg/L as CaCO₃ Averaging 117 mg/L; moderately hard, as published by Cleveland Division of Water. |
|---|---|
| pH | 7.24 (range 7.03–7.57) |
| Alkalinity | 82 mg/L as CaCO₃ |
| Iron | not detected |
| Manganese | not detected |
| Sodium | 10 mg/L |
| Chloride | 18 mg/L |
| Total dissolved solids | 180 mg/L |
| Disinfectant | free chlorine |
| Source and treatment | Lake Erie surface water, per the EPA SDWIS federal record · Powdered activated carbon and permanganate, pre pH adjustment, coagulation, flocculation, rapid mix, sedimentation and rapid sand filtration, pre and post chlorination, fluoridation, with an orthophosphate inhibitor and post pH adjustment · No softening step. |
Not in the report: corrosion index.
SOURCE · Cleveland Water 2025 Water Quality Report, Typical Values table · How we source these numbers
Winter is a loading season on the eastern side of the metro because of repeated wet snow against glass; downtown and the western side see less of it. Spring tree pollen and an August-to-frost ragweed season run across the whole area, and salt sits on lower storeys all winter. Commercial frontage on the near west side reloads within weeks and belongs on an interval.
OHIO SEASON BY SEASON →Cleveland is a surface-count and season city. The water is unsoftened Lake Erie treated at a plant group serving the whole region, which means one chemistry across city and suburbs alike — 105 to 130 mg/L, 117 on average, in the utility's 2025 report. What actually drives the work is housing form and geography. The double house is the characteristic type across large parts of the near west and east sides, and it puts roughly twice the glazing on a narrow lot than the footprint implies, with an occupied upper unit turning a simple wash into an access negotiation. The east-side snow belt is a real internal division — lake-effect snowfall rises sharply on the higher ground, so a single route can cross two different winters, and wet snow loading is what opens tired glazing beads. Tremont's church glass is genuine specialist work. University Circle's institutions provide the cold-season book that keeps crews employed through a long closure.
Cleveland's water is Lake Erie, drawn through intakes well offshore and treated at a group of plants that between them supply a service area far larger than the city itself. Being one plant group serving a whole region means the chemistry at a tap in the suburbs is the same water as the chemistry downtown, which is unusual and simplifies planning considerably.
Cleveland Water's 2025 report puts hardness at 105 to 130 mg/L, 117 on average — its customer pages round that to 7 grains per gallon, or 120 mg/L — and attributes it to the naturally occurring mineral content of Lake Erie rather than to anything done at the plants. The supply is not softened, so that figure describes the lake as delivered rather than a target the utility is holding.
The east-side snow belt is a genuine operational division within a single metropolitan area. Lake-effect snowfall increases sharply on the rising ground east of the city, so a crew working a route that crosses that line is working two different winters — and the wet snow loading that comes with it is what opens tired glazing beads on the older stock.
The double house is the characteristic residential form across large parts of the near west and east sides, and it inflates surface counts the same way a duplex does elsewhere. Two full floors of equivalent glazing on a narrow lot means the pane count runs well past what the footprint suggests, and an occupied upper unit turns the job into an access arrangement.
Tremont's concentration of churches is a working fact rather than a tourist one. Several carry substantial stained glass, and ecclesiastical glazing is a distinct specialism — leaded came, protective outer glazing and structural sag are all in play, and none of it should be quoted by someone who cleans houses.
University Circle gives the city an institutional commercial book of a size that its population would not predict. Museums, hospitals and university buildings run fixed maintenance schedules and procure slowly, which makes that work hard to win and very stable once held.
Winter genuinely closes the residential exterior season here, and the length of the closure is what makes the institutional and downtown work strategically important rather than merely profitable. A crew without a cold-season book is a crew that lays off, and the ones that do not are the ones holding contracts in the Circle or downtown.
Surface count first, because double houses hide half their glass from the kerb. Access second, on narrow lots with shared drives and little setback. Winter exposure third — an east-side address on the snow belt needs more frequent attention than an identical house downtown, and a quote that ignores that is underpricing the relationship rather than winning it.
Post-war single-family stock in the outer neighbourhoods is reasonable homeowner work. Double houses are not, for a practical rather than a technical reason: the storey that needs the ladder is usually someone else's home. Church glazing and University Circle institutional work are both specialist trades.
OPEN COST ESTIMATOR →2025 annual mean at the St Theodosius monitor, 2547 ST Tikhon, 0.3 km south-west of the city (EPA site 39-035-0038).
Largest air release: North Coast Container Corp, 8806 Crane AVE (fabricated metals), inside the city limits, 70,912 lb in 2024.
Cleveland requires a permit from the Commissioner of Water before anyone uses a hydrant for construction or any other purpose. Permitted hydrants must be run through a reducing coupling with its own valve, opened only with a Division of Water hydrant key, and water may not run except while in use; leaking hoses and joints aren't allowed.
Cleveland Codified Ordinances §535.27: use of fire hydrants for construction purposes · checked September 2026
Cleveland's sewer-use code bars anyone from discharging, or allowing, pollutants or other substances not covered by a discharge permit into the sewer or stormwater system, watercourses included, when they endanger people, property or the environment. It also forbids sending water onto the right-of-way or a neighbour's property in a way that creates a hazard or nuisance.
Cleveland Codified Ordinances §541.11: prohibition of illicit wastewater or stormwater discharges · checked September 2026
No one owning, renting or occupying a Cleveland landmark, or property in a landmark district, may make an exterior change until the Landmarks Commission has issued a certificate of appropriateness. The building-permit application doubles as the certificate application, the commission has 45 days to act, and a review fee is charged on the cost of the exterior work.
Cleveland Codified Ordinances §161.05: regulation of environmental changes; certificate of appropriateness · Cleveland Codified Ordinances §161.051: certificate of appropriateness review fee · checked September 2026
Cleveland and the northeast snow belt counties (Cuyahoga, Lake, Geauga, Ashtabula) see the heaviest seasonal salt application in the state and the corresponding road-aerosol residue on ground-floor glass. Profile is comparable to suburban Detroit. The southern half of the state (Columbus and south) sees lighter salt and a correspondingly shorter post-winter spring cleaning season.
The I-71 corridor through Cleveland, the I-75 corridor through Toledo and Dayton, and the I-90/I-71 confluence through Cleveland deposit auto-industry and freight particulate similar to the Detroit corridors. Akron and Youngstown carry a residual industrial-era grime profile from the rubber and steel eras that older masonry housing still sheds onto adjacent glass.
Cleveland draws unsoftened Lake Erie water and its 2025 report puts hardness at 105 to 130 mg/L, 117 on average — about seven grains per gallon. Worth knowing which ladder that is being read on: the utility calls it moderate using the trade association's scale, while on the USGS scale the top of that range is where hard begins.
Residential window cleaning in Cleveland typically runs $10–15 per pane or $300–510 for a standard single-story exterior. Surface count first, because double houses hide half their glass from the kerb.
Cleveland's drier, frost-free months are June to September, by NOAA's 1991–2020 normals for the Cleveland Burke Airport station, where May brings the most rain. The calendar on this page marks June (after the May 1 bloom and after smoke season). Frost nights usually run from November 12 to April 8.
Yes, if the rinse is squeegeed off before it dries: Cleveland Division of Water publishes dissolved solids of 180 mg/L, between this site's two dissolved-solids flags. Water left to dry leaves mineral scale; fresh spots lift with a mild acid. A deionising cartridge yields about 56% of what it would on 100 mg/L water. It draws on Lake Erie surface water.
In Cleveland the dominant residue patterns include unsoftened lake erie supply serving a wide regional area — 105 to 130 mg/l, moderately hard and lake-effect snow loading against glass, sharply heavier on the eastern rising ground.
Post-war single-family stock in the outer neighbourhoods is reasonable homeowner work. Double houses are not, for a practical rather than a technical reason: the storey that needs the ladder is usually someone else's home. Church glazing and University Circle institutional work are both specialist trades.
Dense nineteenth-century stock built around an unusual concentration of churches, several carrying significant stained glass. Residential sash here is old and close-set, and the ecclesiastical glazing nearby is specialist work that should not be quoted casually. Ohio City and University Circle have their own housing stock and glazing as well.
Just over the Ohio line