Juneau windows grow a Pacific Northwest biofilm residue and hold a film of coastal salt aerosol. Here is what removes each, and when the work holds.
Juneau mixes water from a wellfield under the Gold Creek valley with a mountain reservoir and publishes no hardness figure, so the supply's character shifts with the season. Rain measured in feet keeps a biofilm growing on the glass, and salt air adds its own film. On the mountainside streets a two-storey building can drop four storeys on its downhill face, which is what prices the work; May to July is the drier stretch, and a single-story exterior runs $290 to $470.
The city publishes no hardness figure, and its gently treated wellfield and reservoir supply points one way, meaning organic film and glacial silt matter here and mineral spotting does not.
Figures by source, as reported.
| Hardness | not published City and Borough of Juneau publishes no hardness figure in its 2025 Annual Water Quality Report (juneau.org/water-quality-report). |
|---|---|
| Disinfectant | free chlorine |
| Source and treatment | Roughly two-thirds from the Last Chance Basin wellfield in the Gold Creek watershed and about one-third from the Salmon Creek Reservoir · Gentle chlorination on both sources, with filtration added on the surface source as the EPA requires. No fluoride has been added since January 2007. The utility operates under ADEC waivers for synthetic organic chemicals and reduced asbestos monitoring. · No softening step. |
Not in the report: pH, alkalinity, corrosion index, iron, manganese, sodium, chloride and total dissolved solids.
SOURCE · City and Borough of Juneau 2025 Annual Water Quality Report (juneau.org/water-quality-report) · How we source these numbers
With over five feet of rain a year, a Juneau wash is judged on how long it survives rain, not on a seasonal peak.
ALASKA SEASON BY SEASON →Juneau runs on two sources at once: most of the water comes from a wellfield under the Gold Creek valley, with a mountain reservoir making up the rest, so the character of the supply shifts with the season and the split. Above ground, the defining conditions are rain measured in feet, a downtown built on a mountainside, and no road out of town.
The primary source is the Last Chance Basin wellfield in the Gold Creek watershed, which supplies roughly two-thirds of the borough's water. The remaining third comes from the Salmon Creek Reservoir, fed by snowmelt and rainfall and filtered before distribution.
The borough stopped adding fluoride in January 2007 after a local vote, which makes Juneau one of the larger American cities delivering unfluoridated municipal water — a detail worth knowing when a customer asks why their glassware behaves differently than it did down south.
Over five feet of precipitation a year means glass is almost permanently wet. Biological film at the glazing line and organic streaking are the dominant failures, and a wash is judged on how long it holds through rain rather than on how it looks dry.
The Taku winds are a genuine equipment hazard, not weather colour. These are strong, dry downslope winds off the icefield in winter, and they arrive fast enough that ladder and pole work has to be abandoned rather than adapted.
Glacial silt is in the air and the water table in the Mendenhall valley. It is fine, grey and abrasive, and dragging a squeegee through it is how glass gets scratched here — the first pass has to flood it off rather than wipe it.
Downtown is built up the side of a mountain, and the practical effect is that a two-storey building can present four storeys of drop on its downhill face. Staging and anchor points, not glass area, decide what a downtown job costs.
The old-town stock is gold-mining-era timber on very tight lots, with original sash and decades of paint on the glazing line. It needs heritage handling, and there is rarely room to set a ladder anywhere but in the street.
No road connects Juneau to the rest of the continent, so equipment, chemicals and replacement glass all arrive by barge or air. That lead time sits behind every quote, and a broken pole is a week of downtime rather than a trip to a supplier.
Terrain prices Juneau work: a two-storey building uphill can present four storeys of drop on its downhill face.
Glacial silt scratches glass if it is wiped instead of flooded, and downtown's mountainside drops need staging a homeowner does not own.
OPEN COST ESTIMATOR →2025 annual mean at the Floyd Dryden Middle School monitor, 3800 Mendenhall Loop Road, 22.7 km west of the city (EPA site 02-110-0004).
Largest air release: Hecla Greens Creek Mining Co, 13401 Glacier HWY (metal mining), inside the city limits, 22,150 lb in 2024.
Where water is used wastefully or negligently on a Juneau customer's premises and it seriously affects general service, the utility may cut off service if the problem is not fixed after notice.
Juneau Code §75.01.140: water waste · checked September 2026
Juneau's traffic code covers runoff onto roads: no one may divert or drain water onto a highway, or push snow or ice onto it, in amounts that could endanger traffic or snowplows, and anyone who drops oil, litter or any other substance on a roadway must clean it up at once.
City and Borough of Juneau Code §72.02.530: littering, depositing materials and draining water onto highways · checked September 2026
In a Juneau historic district, the planning department reviews minor developments and the planning commission reviews major ones, and a site plan is approved only once the reviewer is satisfied it meets the district's design standards.
Juneau Code §49.70.530: standards for historic district design review · checked September 2026
Post-1968 oil-corridor commercial concentration through Prudhoe Bay, Deadhorse, and surrounding North Slope oil-and-gas commercial. Substantial industrial residue handling requirements. Same handling framework as Bakken corridor at substantially higher logistics premium.
The city publishes no hardness figure, and its gently treated wellfield and reservoir supply points one way, meaning organic film and glacial silt matter here and mineral spotting does not.
Residential window cleaning in Juneau typically runs $10–15 per pane or $290–470 for a standard single-story exterior. Terrain prices Juneau work: a two-storey building uphill can present four storeys of drop on its downhill face.
Juneau's drier, frost-free months are May to July, by NOAA's 1991–2020 normals for the Juneau International Airport station. The calendar on this page marks May (after smoke season) and June (before frost). Frost nights usually run from October 3 to May 4.
City and Borough of Juneau publishes neither hardness nor dissolved solids, so rinse one pane and let it dry in sun; a white ring means switch to pure water. It draws on roughly two-thirds from the Last Chance Basin wellfield in the Gold Creek watershed and about one-third from the Salmon Creek Reservoir.
In Juneau the dominant residue patterns include pacific northwest biofilm residue and coastal salt aerosol. With over five feet of rain a year, a Juneau wash is judged on how long it survives rain, not on a seasonal peak.
Glacial silt scratches glass if it is wiped instead of flooded, and downtown's mountainside drops need staging a homeowner does not own.