Buffalo water is moderately hard at 80 to 100 mg/L, lake-effect road-salt slush coats lower panes from late November to March, and storms stir lake silt.
Buffalo's water is moderately hard on calcium alone, so its true hardness runs a little higher, but spotting stays modest. Lake-effect slush laced with road salt coats lower panes through the winter, and July to September is the dependable window. So much of the year is unworkable outdoors that annual prices have to cover the lost weeks; a single-story exterior runs $280 to $480.
Read the label before quoting the number. Buffalo publishes calcium hardness rather than total, so the real figure is higher than the printed average, and the distribution series it publishes runs a little lower than the entry-point one. What it amounts to in practice is a middling supply that will mark glass left to dry in sun but never demands acid as routine — comfortably workable, and far easier than the lake's reputation for industrial water suggests.
| Hardness | 80–100 mg/L as CaCO₃ Averaging 89 mg/L; moderately hard — but published as CALCIUM hardness rather than total, so the true total runs higher. |
|---|---|
| pH | 7.76 (range 7.38–8.1) |
| Alkalinity | 93 mg/L as CaCO₃ (range 82–102) |
| Manganese | 0.00134 mg/L (range 0.00051–0.00213) |
| Sodium | 10.3 mg/L (range 10.2–10.4) |
| Disinfectant | free chlorine |
| Source and treatment | Surface water, per the EPA SDWIS federal record · Pre-chlorination for taste and odour, coagulation, rapid mix, sedimentation and rapid sand filtration, fluoridation, with orthophosphate and polyphosphate inhibitors · No softening step. |
Not in the report: corrosion index, iron, chloride and total dissolved solids.
SOURCE · Buffalo Water 2025 Annual Drinking Water Quality Report, PWS NY1400422, entry-point inorganics and Other Properties of Water tables · How we source these numbers
Lake-effect snow off Erie makes road treatment near-continuous from late November into March, and the salt-laden slush thrown onto lower glass is the dominant loading of the year by a wide margin. It reloads with each storm rather than accumulating gradually, so an interval set in October is meaningless by January. The short summer then carries almost all the exterior work in the calendar.
NEW YORK SEASON BY SEASON →Buffalo Water publishes calcium hardness rather than total — 80 to 100 ppm averaging 89 in 2025 distribution samples, with no magnesium reported — so the real total runs higher, the same partial-label shape Nashville uses. The Emerald Channel intake draws the shallowest and siltiest Great Lake through a mile-long tunnel under the lakebed. Commercially the year is short: lake-effect winter both drives the salt-and-grit problem and removes months from the exterior season, while an intact Victorian and pre-war stock supports a heritage book that rewards specialist skill over volume.
Buffalo Water publishes calcium hardness rather than total hardness — 80 to 100 ppm averaging 89 in 2025 distribution samples — and reports no magnesium anywhere. The true total is therefore higher than the printed figure, and the utility never states it.
Two separate series appear in the same table and they do not agree. In 2025, entry-point samples across the full year gave 76 to 91 ppm while distribution samples gave 80 to 100. The distribution numbers are what reaches a tap; the 8 ppm entry-point minimum sits far below everything else in the report and should not be read as a delivered value.
The intake sits in the northeastern corner of Lake Erie in what the utility calls the Emerald Channel, drawing through twelve sluice gates into a mile-long tunnel bored under the lakebed. Chlorine is injected there seasonally to control zebra and quagga mussels before the water reaches the shore.
Lake Erie is the shallowest and siltiest Great Lake, averaging 62 feet, and water stays in it only about 2.6 years against 191 years in Superior. The utility argues that rapid flushing works in its favour, but the same shallowness means storms stir sand and silt into the supply on short notice.
Lake-effect winter drives near-continuous road treatment from late November into March, and the slush thrown onto lower glass is saline and gritty at once. The bottom third of any pane needs its own flooding routine through the salt season, because a dry or under-wetted pass will score it.
The city holds an unusually intact stock of pre-war and Victorian residential alongside Olmsted's parkway system, and much of it still carries original sash. Century-old putty lines in a freeze-thaw climate do not tolerate pressure, and once a joint softens it sheds a chalky wash down the pane with every rain.
The season is the single biggest commercial fact. Long stretches of the year are simply not workable outdoors, so annual pricing has to carry the lost weeks rather than pretend the year is twelve months long. Against that, the city's architectural stock — Olmsted parkways, Wright and Sullivan buildings, dense Victorian residential — supports a heritage and institutional book that rewards specialist skill over volume.
Summer work on ordinary housing is approachable. The winter is not, and it is not a matter of care — salt slush carries grit, and any pass that is not properly flooded first drags that grit across the pane. The other constraint is the housing itself: Buffalo has an unusually intact stock of pre-war and Victorian residential where original sash and century-old putty lines punish pressure of any kind.
OPEN COST ESTIMATOR →2025 annual mean at the Buffalo monitor, Trailer,185 Dingens Street (near Weiss ST.), 4.4 km south-east of the city (EPA site 36-029-0005).
Largest air release: 3M Co - Tonawanda, 305 Sawyer AVE (chemicals), 2 km outside the city limits, 246,349 lb in 2024.
Buffalo forbids sprinkling without a nozzle or through an opening wider than a quarter inch, allows hose over three-quarters of an inch only at extra charge, and limits a yard fountain, street washer or jet to three hours a day without a special permit.
Buffalo Code §491-49: hose size and nozzle requirements · Buffalo Code §491-48: hours of use of yard fountain, street washer or jet · checked September 2026
Buffalo bars dumping dirt, refuse or material of any kind into a stream or natural watercourse without the public works commissioner's written permission, and bans washing motor vehicles in public waters.
Buffalo Code §491-78: contamination of watercourses · Buffalo Code §491-79: washing vehicles in public waters prohibited · checked September 2026
It is unlawful in Buffalo to build, alter, remove or demolish any part of a landmark, a landmark site or a structure in a historic district in a way that affects its exterior without first obtaining a certificate of appropriateness or a certificate of no effect.
Buffalo Code §337-16: required certificates and permits · checked September 2026
Heavy road salting from December through March produces an aerosolized salt mist that bonds to ground-floor glass and corrodes aluminum and steel sash hardware over time. The salt film cleans off but the underlying frame damage is cumulative. Worst in NYC, Long Island, and the snow belt.
The hardwood pollen wave in the Hudson Valley, the Adirondacks, and the western tier runs heavy from mid-April through May. Yellow pollen films horizontal glass and the upper third of vertical glass on east-facing exposures. Requires a surfactant pre-rinse on most spring jobs north of Westchester.
The pre-1945 wood-sash housing stock in NYC, Westchester, and the older upstate cities is reaching the end of its original glazing putty service life. The putty crumbles around the perimeter of the pane and produces a chalky residue on the lower edge of the glass that cleaning does not solve. Documentation and a glazier referral are the right move.
Buffalo runs on Buffalo Water (Buffalo Water Board, operations managed by Veolia NA) lake or reservoir surface water at a published 80–100 mg/L (CaCO₃), averaging 89 — moderately hard — but published as CALCIUM hardness rather than total, so the true total runs higher. Read the label before quoting the number.
Residential window cleaning in Buffalo typically runs $9–14 per pane or $280–480 for a standard single-story exterior. The season is the single biggest commercial fact. Long stretches of the year are simply not workable outdoors, so annual pricing has to carry the lost weeks rather than pretend the year is twelve months long.
Buffalo's drier, frost-free months are July to September, by NOAA's 1991–2020 normals for the Buffalo station, where December brings the most rain. The calendar on this page marks July (after the May 13 bloom and after smoke season). Frost nights usually run from October 26 to April 24.
Yes, if the rinse is squeegeed off before it dries: Buffalo Water (Buffalo Water Board, operations managed by Veolia NA) publishes hardness of 80–100 mg/L, between this site's two dissolved-solids flags. Treatment starts with pre-chlorination for taste, odour, coagulation and rapid mix.
In Buffalo the dominant residue patterns include lake-effect road-salt slush and grit on lower panes, late november to march and storm-stirred lake silt during turbulent erie conditions.
Summer work on ordinary housing is approachable. The winter is not, and it is not a matter of care — salt slush carries grit, and any pass that is not properly flooded first drags that grit across the pane.
Pre-1920 commercial core with Art Deco and Beaux-Arts architecture; substantial fixed glazing. Elmwood Village and North Buffalo have their own housing stock and glazing as well.
Just over the New York line