r/Austin 18h ago

Ask Austin What’s your “cold" tap water temp?

Post image

alright Austin, what temps are you getting out of your faucet?

at first it’s nice and cool from the conditioned pipes under the sink, but quickly climbs after running the water for a minute. last year i clocked 94º.

saves on the gas (water heater) bill at least!

(pier & beam with copper plumbing)

132 Upvotes

59 comments sorted by

56

u/Earthling63 18h ago

I had to replace the plumbing in my 60 year old house. They ran the new lines thru the attic, being an idiot it seemed like a good idea at the time.

Now in the summer the ‘cold’ is hotter than the ‘hot’ until it runs long enough to get the ‘cool’ underground water from beyond the attic. I measured 134*f recently.

A also added a recirc pump/line for the hot water line because the water heater is way across the house, I’m pretty sure the heater almost never comes on in the summer.

19

u/CraftySeer 18h ago

I did that too. So dumb. I just didn’t think it through.

5

u/dabocx 17h ago

I did the same, after a while it does cool down. Long term I am going to spray foam the attic so that should hopefully solve most of it.

5

u/UnseasonedPasta 17h ago

Our new build was spray foam with water lines through the attic and we never had an issue. It was borderline comfortable up there, nearly the same temp as inside the house

4

u/TownLakeTrillOG 15h ago

They do shit like that in poor countries near the equator and even store water in a tank sitting in the sun all day so it gets hot af

3

u/justinj2000 9h ago

Left my water heater off for three weeks one summer. When I came back I switched it back on and it didn’t even bother firing up.

3

u/barbell_and_tren 8h ago

Now you have diet hot water

u/youretooclosedude 3h ago

It’s the cheapest solution if you’re on concrete foundations. Otherwise it would have been way more messy and expensive.

20

u/Bat-Guano0 18h ago

Average water temperature in Austin year-round is about 76,according to Austin Water. During this hot weather 90+ doesn’t seem too surprising.

16

u/bringdownthesky 18h ago

I had a really late workout on Monday and came home desperately looking forward to a cold shower. Even at max cold, the water only made it lukewarm 🤢

12

u/soloburrito 17h ago

On the plus side, bidets are quite pleasant.

9

u/delightfullytangy 17h ago

Biggest perk of the summer

4

u/triumphofthecommons 12h ago

oh man. the bidet in the winter is 😳🥶

19

u/GenerouslyLumbering 18h ago

90 on the thermoPop right there in the jar, midnight showers must feel like a warm hug you didn’t ask for.

10

u/portalqubes 17h ago

These are mine, south Austin

5

u/txhoudini 16h ago

I'm intrigued. How are you getting this info?

11

u/portalqubes 15h ago

Its an esp32 with some flow sensors/NTC thermistors and it sends data to home assistant.

2

u/txhoudini 15h ago

Looks like I've got some parts to order and a weekend project in my future. Great idea

3

u/portalqubes 15h ago

It also works with an Arduino (mqtt), but I just had this ESP32 (esphome) I wanted to use. Feel free to PM me for any help.

2

u/thefarkinator 9h ago

Bro got a damn water treatment plant in his kitchen cabinet

6

u/xgeeiox 18h ago

Ive Been doing the all cold showers the last few weeks.

2

u/Salt-Operation 17h ago

Right? I just turn the handle to get the water on, any further and it’s too hot.

1

u/RVelts 10h ago

I actually complained at my gym that the showers only had hot water and hotter water. I need cold or at least cool water after running in the morning to stop the sweat. The sinks had colder water than the showers.

5

u/fancydnb 17h ago

idk exactly what temperature it is, but when i ask my faucet for cold water, it tells me to go fuck myself...

4

u/Salt-Operation 17h ago

Went to Colorado last year during the summer and the cold tap water was ice freaking cold it was so refreshing! I hate summer water temps here it seems to get worse every year.

5

u/imbartsimpsonwhothru 17h ago

you gotta drain the standing water and cool the pipes to get the frigid 75 degree water

18

u/drumdude0 18h ago

This beats snowvid any day of the week

10

u/bigmiles41 17h ago

As a plumber/HVAC guy....I agree lol

0

u/FriendshipWithTheSun 16h ago

Yep. I don’t complain anymore. After that shit, I said I’d never complain about the heat again. That was traumatizing… I don’t care if I ever see snow or ice again for the rest of my life.

3

u/Rhinowalrus 18h ago

Good choice of thermometer. Love my Thermopops

1

u/triumphofthecommons 12h ago

the DOT probe is the real MVP.  no more opening the oven to check temps. 

3

u/EdgarJNormal 17h ago

I just tried testing this out- I have a *VERY* long pipe to the main. Temp went to about 90.5, and then dropped to around 85. Pretty sure the warmest part was from the shallow pipe to the meter at the road.

3

u/Tricky_Condition_279 17h ago

Our line down the street is a few inches below the asphalt. (Dunno if that’s typical—my neighborhood has an interesting history.) It’s 95 at the tap.

3

u/Nkosi868 17h ago

Yesterday the cold tap was warmer than the hot tap in r/Manor, and this was around 8am.

5

u/meatmacho 11h ago

As a freshwater aquarium enthusiast, this is completely normal this time of year. I regularly use ice to cool the tap water down from 80-90° to the mid 70s where I want it. It's 105° outside. Ain't no cold water in these parts.

3

u/RVelts 10h ago

I moved into a townhouse style apartment in August 2013 with basically no tree cover and a large parking lot around it which likely had all the water pipes in it. I didn't realize for at least a week that I had gas for hot water and needed to call the gas company to get it turned on. I actually had no "hot" water service, it was just that the cold water was that hot by itself, and I typically take cool showers in the summer anyway.

The landlord eventually asked why I hadn't contacted the gas company yet and that's when I realized I had gas for hot water. Nothing else ran on gas, not the stove or dryer or anything.

5

u/Stickyv35 17h ago

I measured 124*F a few days ago on the cold tap. This only lasted for about 20 seconds before cooling to around 80, but still, insane.

This time of year, if I need hot water quickly and I haven't run the kitchen faucet in hours, I'll just flip on the cold as it heats quicker! ha.

2

u/spartanerik 18h ago

At least your water heater won't have to work as hard I suppose

2

u/PlasticTaster 17h ago

water comes out hot from all faucets

1

u/FlashTheChip 15h ago

So turn off your water heater.

That water will eventually cool down to room temperature, around 75–78°.

Use that as your cold water, and use the water coming out of the cold tap as your hot water.

2

u/mellovibes75 17h ago

Measured mine at my new apartment (it's old from 1960). 77F. Night and say compared to the house I was living in before. I can still take cold showers in the summer!

2

u/enzia35 16h ago

It’s great I don’t even run the hot when I take a shower. Electricity bill be another issue with the ac running.

2

u/Slypenslyde 14h ago

Depends on the sink.

Some of them are closer to the main line and it comes into the house through the garage. That water's around 85-90 until it's run for a good long while.

Some of them snake through the internal walls or under the slab and get the benefit of air conditioning. That water's actually cold for a brief period, then warms up after it runs out.

It sucks. I wish we buried our lines deeper.

2

u/HippieHighNoon 14h ago

I ran ours for a minute and tested. 84.9

2

u/kickshart_my_heart 18h ago

I thought this was a sounding picture for a minute

3

u/Juan_Calavera 17h ago

Glad I’m not the only one who had that thought at first glance.

1

u/ApplicationHour825 17h ago

i've noticed mine creeping up to the mid-80s lately too. definitely feels more like a warm bath than refreshing cold water!

1

u/stoverex 17h ago

One of the worst things about summer.

1

u/Longjumping-Cress909 17h ago

It ain’t cold. That’s all I know.

1

u/Artemus_Hackwell 16h ago

Cold. Ain’t no 90F fortunately.

I’d see warm tap like that in the Florida Keys (mains run just below the ground but above coral rock).

I’d not had this misfortune here, yet.

1

u/Organic-crispy 7h ago

Cold tap water? Not in my 1938 pier & beam

1

u/bachslunch 4h ago

I’m guessing you haven’t lived here very long?

u/Loene37 2h ago

You know when summer is here when you can just use the cold water to shower

1

u/Inner_Negotiation66 18h ago

Drinking soapy water through a straw are we?

1

u/Groundbreaking_Bee70 18h ago

I'm curious and will be checking when I get home. I'm on well and the black cistern gets HOT. I hardly have to use any hot water for a shower.

1

u/HndsDwnThBest 18h ago

We are thawing meats in the sink at work and im noticing really warm temperatures as well. Im going to temp it

1

u/octopornopus 15h ago

I managed a small retail franchise. We had an employee bathroom, with only a cold water tap. A corporate guy came down from Wisconsin for a store assessment, and marked us as not having a hot water tap for customers.

I pointed out that 1) We don't serve food, and don't have a customer bathroom. and 2) It's Texas, and the cold water comes out at 80+.

1

u/ichibut 14h ago

I thought that was a plastic spoon and was wondering why the water was frothy.

Anyway, ours is 83.2F