GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV

Dealing with hard water

K-Span

Ready to race!
Location
Stafford, VA
Car(s)
2021 GTI SE MT DBP
This GTI is the first car I've owned that I feel like I really to take care of it as best I can. That probably means avoiding the ol' Soapy Joe's car wash, despite its convenience and value. The problem with washing my car by hand at home, however, is that my water is very hard and leaves spots all over. Any tips and tricks for dealing with hard water? I've been considering getting a ceramic coat as well, and I've read some conflicting information about how well it plays with hard water. Thoughts?
 

Jeffapotamus

Ready to race!
Location
NW Indiana
Car(s)
2019 GTI
I have really hard well water. I just go to a hand car wash that has municipal water. My daughter let a sprinkler hit her MINI once. It was not fun buffing the hard water spots out.
 

K-Span

Ready to race!
Location
Stafford, VA
Car(s)
2021 GTI SE MT DBP
Dry it off with a microfiber?
Well yes, obviously. 😂

Just don't let it dry.
That's the hard part, of course. Maybe just wash the car around sunrise/sunset 🤔

Mist it with Turtle Wax Seal & Shine as you dry it.
I'll look into that.

I have really hard well water. I just go to a hand car wash that has municipal water.
I'm on city water, but it's pretty awful. My wife has been bugging me about getting a whole house water softener for a while now. Maybe it's time to bite the bullet and eat the cost of that 😭
 

Phur

Autocross Champion
Location
IN
Car(s)
2013 VW GTI Autobahn
Try ONR (Optimum No Rinse). The stuff is pretty awesome and in addition to being, hands down, the best car wash that I have used, the polymers in it bind with the minerals in the water as well. It essentially softens the water. Wash a panel, dry a panel.
 

Chogokin

Autocross Champion
Location
So Cal
Car(s)
GTI Sport | Audi A3
Can you remove the hard water with a clay bar? I have problems with it too. Sometimes when I wash...the water will dry before I get a chance to wipe the car down. Summer months I wash the car at night.
 

RMinNJ

Go Kart Newbie
Location
NJ
Car(s)
2018 GTI S
I can recommend the seal and shine or TW graphene flex spray wax resisting water spots. Wash in the shade and keep the whole car constantly wet or dry each panel as soon as it's done.
 

Acadia18

Autocross Champion
Location
The Greater Boston Metropolitan Area
Car(s)
2019 Golf R
t's the hard part, of course. Maybe just wash the car around sunrise/sunset 🤔

Never wash a car in direct sunlight. Morning, evening, or in the shade. If it's in direct sunlight during the day, the panels get too hot to really do a good job.

Try ONR (Optimum No Rinse). The stuff is pretty awesome and in addition to being, hands down, the best car wash that I have used, the polymers in it bind with the minerals in the water as well. It essentially softens the water. Wash a panel, dry a panel.

Love ONR. Don't use it much during the warmer months, but in the winter when it's cold, my car gets ONR sponge baths in the garage once a week.

A dilution makes a good quick touch up spray as well.
 

jimlloyd40

Autocross Champion
Location
Phoenix
Car(s)
2018 SE DSG
Well yes, obviously. 😂


That's the hard part, of course. Maybe just wash the car around sunrise/sunset 🤔


I'll look into that.


I'm on city water, but it's pretty awful. My wife has been bugging me about getting a whole house water softener for a while now. Maybe it's time to bite the bullet and eat the cost of that 😭
Once you have a water softener you won't want to live anywhere that doesn't have one. And your water pipes, sinks and faucets will thank you.
 

sterkrazzy

Autocross Champion
Location
United States
Car(s)
Turbo. Blue.

MonkeyMD

Autocross Champion

Keehs360

Autocross Champion
Location
Denver
Car(s)
Mk7.5
When it comes to well water. Consider an inline filter. The ppm of your water is high due to mineral content

Your only cheap solution would be an inline filter for your hose. It will get you around the 100-300ppm mark and you're gonna have to swap to a new one about every 8-10 car washes.
 

KevinC

Autocross Champion
Location
The land of Wyatt Earp & Doc Holliday
Car(s)
'19 Golf R, '21 M2c
I dealt with a bad hard water situation for years when I was still washing cars, and my el-cheapo solution was to use a California Water Blade (essentially a fancy handheld squeegee) to get the rinse water off the car immediately before finishing with microfiber. Absolutely did the job. One knock on the CWB is that dirt/grit can theoretically get caught in the "blade" and be dragged across your paint. In theory, true, but in practice, I never had a problem with it.
 

OryxRob

Ready to race!
Location
Middle England
Car(s)
Mk7 GTI PP Oryx
As others have said, either dry with a damp microfibre towel or get a blower & don’t do it on warm sunny days. Some like them but personally I wouldn’t let a water blade within 50ft of mine as it’ll drag debris across your paint. All the swirl marks you see on paint are scratches from poor cleaning.
 

Ghost GTI

Drag Racing Champion
Location
Cockpit
Car(s)
'19 GTI SE DSG
I dealt with a bad hard water situation for years when I was still washing cars, and my el-cheapo solution was to use a California Water Blade (essentially a fancy handheld squeegee) to get the rinse water off the car immediately before finishing with microfiber. Absolutely did the job. One knock on the CWB is that dirt/grit can theoretically get caught in the "blade" and be dragged across your paint. In theory, true, but in practice, I never had a problem with it.
Except you're marrying the paint with a blade. Nothing hard like that should be touching your paint ever.
 
Top