Mammoth Lakes
United States · North America
The water
115 mg/LModerate
Source: Mammoth Community Water District Consumer Confidence Report 2023 · Official figure. Hardness counts dissolved calcium and magnesium in the water; it is the number your hair meets in the shower.
What moderate water does to hair
The comfortable middle. Most routines work unchanged; a clarifying wash now and then keeps shine.
The washing routine for Mammoth Lakes
Your usual routine holds here, with one addition: a chelating (detox) wash roughly every eighth wash keeps the gentle build-up from accumulating. Condition as normal after every wash.
Climate, from recent records (Open-Meteo, ERA5 2015-2024): July is the warmest month, averaging 25°C by day, and humidity peaks in March at about 65% on average. Day to night swings reach 15°C, which dries hair out between washes; the plan adds moisture and a sealing leave-in when a stop spans those months.
Local note: Wide range reflects the blend of Lake Mary surface water and nine groundwater wells; the mix varies by location and season.
Altitude: at about 2,402 m, UV runs roughly 10 to 12% stronger per 1,000 m and the air is dry, so UV protection and moisture join the routine; the planner builds both in.
Plugs and power for your tools
Sockets: Type A and B. Supply: 120 V, 60 Hz.
Full sockets by the sink are standard (the National Electrical Code requires one within 3 feet of each basin, GFCI protected).
A dryer or styler wound for 230 V only will run weak on this supply, and a plug adapter does not change voltage. Check the label for dual voltage (100-240 V) before you travel.
Plug, voltage and frequency: IEC World Plugs and national standards.
Plan Mammoth Lakes properly
The trip planner turns this water profile into a wash plan for your hair type, a chosen kit and a packing list, month by month.