We have a couple of tower servers in a small server room. The carpet is wet as a result of the cooler and no-one else really seems concerned about this but I'm not too happy. I'm only a lowly developer, but I seem to be more concerned than the hardware guys!

Is this dangerous? What's the worst that could happen? My instinct says water + (electric * allOfOurData) = dangerous.

  • 30
    I think the carpet was put in to absorb the water...
    – JMK
    Commented Nov 4, 2011 at 10:57
  • 40
    @Heisenburg...you have got to be joking.
    – tombull89
    Commented Nov 4, 2011 at 10:58
  • 21
    So, instead of solving the problem, there was carpet put in to soak up the water. The carpet where your servers are standing on. I don't even...
    – tombull89
    Commented Nov 4, 2011 at 11:16
  • 12
    If the carpet was put there to soak up the water, you need to update your resume. That place is a ticking time bomb.
    – MDMarra
    Commented Nov 4, 2011 at 14:53
  • 16
    Surely you need some hot air blowers in there to dry out the carpet.
    – dunxd
    Commented Nov 4, 2011 at 15:51

16 Answers 16


Carpet is a big 'NO! NO!!' for a room hosting equipments that are of high value, because of the fire risk. Water is too, for obvious reasons. You should straight call maintenance immediately and have them repair the drainage system. The water could really cause problems, inform your superiors right away and draw their attention on the matter.

  • 26
    "but... but... the carpet is water logged. So no fire hazard!" I can just hear someone thinking this is a jenius solution.
    – albiglan
    Commented Nov 4, 2011 at 14:24
  • 14
    don't forget the increased static (ESD) risk of carpet.
    – RyanTM
    Commented Nov 4, 2011 at 14:35
  • 6
    @Ryan not such a concern when the carpet is wet...
    – user229044
    Commented Nov 4, 2011 at 14:36
  • 7
    Fire, ESD, Dust -- All sorts of reasons to avoid carpet in your server room. Sometimes though you're in an office where there's no room/budget to do a proper server room. Work one problem at a time though (and water is worse than carpeting - especially if you have both at the same time because now you have to think about mold too)
    – voretaq7
    Commented Nov 4, 2011 at 14:58
  • 5
    If you can't sell it because of the safety hazard concerning water and electricity, consider this. A constantly wet carpet is a breeding ground for mold, stink, and much worse. Legionaries disease was tracked back to accumulated standing condensation from an air conditioner. I mean seriously, wet carpet anywhere?
    – Bill
    Commented Nov 4, 2011 at 16:11

Nobody has mentioned "why" water in a server room is dangerous. It might be obvious, but just to put it out there...

Server rooms have a good deal of electrical equipment running on AC and DC current. Usually they are well grounded, but sometimes insulation breaks down, or a wire gets pinched. A person touching an electrical potential is protected by their skin or clothing (gloves). This provides a resistance that prevents a current running from the higher potential piece of equipment to ground. Adding water to this situation decreases the resistance allowing more current to pass through the body. (in both the AC and DC forms of Ohms law Current = Voltage / Resistance(Impedance))

If you are wet, a 60V potential difference can send enough current across your heart to kill you. Not 120V, not 240V, 60V. You don't need a main electrical cord to cause the short.

To keep beating the horse... You are likely legally permitted to refuse to enter the server room. In the United States, OSHA and the DOL regulations may apply to this situation. OSHA standard 1910.22(a)(2) is what you can reference. Not that it is a good idea to throw around OSHA regs, but they exist for a reason.

If you do need to work in that environment, then invest in some good PPE (gloves, shirt and shoes) to afford yourself some protection. But seriously, this is a bad situation and should be fixed.

  • 5
    +1. Given the fuse size in some server rooms it may be ILLEGAL for a person to go into the room while the electricity is on (not even servers running - you will ahve to remove the fuses). You get into an area where legal regulations exist and ignore them.
    – TomTom
    Commented Nov 4, 2011 at 15:31
  • 1
    "Is this dangerous?" Anyone in the modern world who asks that about a room full of electric/electronic equipment sitting on damp carpet or above damp carpet needs to question their education. It's why we install GFCI sockets in bathrooms. Standing in a puddle of water and touching a computer case on a system that has a bad ground and an electrical fault is a potentially deadly situation. Commented Nov 7, 2011 at 2:12
  • 2
    Death or physical injury trumps data loss any day of the week... Commented Nov 7, 2011 at 2:20

If these machines are directly on the carpet (carpet in a server room ? seriously ?) then you might want to lift them off a few inches.

Any non-conductive material will do - wood, stone, plastic, foam, whatever.

In a pinch, put some cardboard under them.

  • 2
    No idea why this was down voted. In a pinch there's nothing wrong with this advice. They should be raised regardless, to be honest.
    – Dan
    Commented Nov 4, 2011 at 10:59
  • 35
    Sure - when ? Tomorrow ? Next Week ? I would advise him to put them on some sort of elevated support RIGHT THE F NOW.
    – adaptr
    Commented Nov 4, 2011 at 11:24
  • 12
    +1 for realism - some people on this forum forget that there is a real world out there that everyone has to deal with, rather than some miraculous instant implemention of the perfect solution.
    – dunxd
    Commented Nov 4, 2011 at 12:35
  • 9
    What good does cardboard on a wet floor? Will it not just soak through?
    – jva
    Commented Nov 4, 2011 at 14:25
  • 3
    +1 -- I wouldn't recommend cardboard at all myself, but definitely get your servers at least a few inches off the floor - ESPECIALLY if it's carpeted. They will suck in a lot less dust and be much happier in the long run.
    – voretaq7
    Commented Nov 4, 2011 at 14:55

We have a couple of tower servers in a small server room.

Put them on a table.

  • 4
    This is the most practical advice here, even if it isn't the best solution. Commented Nov 5, 2011 at 18:58
  • +1 for pointing out the obvious :) Commented Nov 8, 2011 at 5:02

You're 100% right to be worried, you need to inform your management and recommend that the servers be shut down and the room powered off until the problem is resolved. Anything else is negligence.

  • 11
    Have you ever worked for a business ? You know, the kind that makes money ?
    – adaptr
    Commented Nov 4, 2011 at 12:36
  • 6
    @adaptr, note the of the word "reccomend". Not "demand".
    – tombull89
    Commented Nov 4, 2011 at 12:51
  • 8
    @adaptr Yes he has/does. Also the kind that doesn't have water flying all over their DC, nor carpet, and has redundant systems so if one has to be shutdown there's no disruption of service. Something about an ounce of planning and a pound of solution...
    – Chris S
    Commented Nov 4, 2011 at 13:01
  • 5
    I think this was more of a "How to avoid being fired when this blows up" answer: lodge protests now.
    – Sorpigal
    Commented Nov 4, 2011 at 13:03
  • 7
    @adaptr - Have you ever been fired (or worse sued) for professional negligence? You make the recommendation to the appropriate person(s), in writing, and keep a copy. If management ignores the recommendation and then comes after you when everything blows up you produce the copy.
    – voretaq7
    Commented Nov 4, 2011 at 14:53

$10 says that it's "leaking" because nobody is venting the AC unit to the outside - given the ad-hoc sound of this set up, I wouldn't be surprised if they hadn't installed the unit properly. That means, of course, that the room is likely also overheating on a regular basis.

  • Short term: Plumbing a drain to the unit perhaps. An indoor unit that is not optimized for cooling the air mass/temperature gradient is also likely to be inefficient.Cooling is a major cost. I've seen capital planning reviews on these size nanodatacenter closets costing way more than renting servers (CRAC/HVAC installation, power not counting servers costing $50-100K for merely 1-5 racks).
    – user31170
    Commented Nov 5, 2011 at 12:27

Turn everything off and go to the pub ... if asked simply state that you will begin taking things seriously when everybody else does.

Things to do:

  • Get rid of that carpet
  • Plinth for your kit (or rack would be even better if you can afford it)
  • Environmental monitoring (temperature, humidity etc or dehumidifier if you're on a budget)

But please for the love of all things binary do not leave this kit sailing towards the iceberg.


Ummm. As you said Water and electric = BAD... in a server room = Dangerous.... I would soon rather turn everything off clean it up than someone get hurt.... Is cheaper in the long run.. Talk to the "IT manager" if not go higher... that is dangerous.


Even if this is not a problem short term, the chances of this causing other problems like rusting cases and rotting floors and walls makes it a must fix. The first is a pain but the second could end up forcing you to completely vacate the room to fix.

  • +1 For mentioning corrosion which was my first thought. The water from an ac is basically "destilled" water, and not very conductive to electricity until ions from salt or metals are added, but the moisture will speed up corrosion a lot Commented Nov 5, 2011 at 12:02
  • The "not very conductive" bit is rendered somewhat moot as soon as it hits the floor as there will be plenty stuff added to it at that point.
    – BCS
    Commented Nov 7, 2011 at 0:29
  • If the carpet is over concrete, your distilled water assumption goes away pretty quickly. Commented Nov 7, 2011 at 2:16

One word: mold

Now you not only have a safety issue (shock hazard) and a reliability issue (potential equipment failure), you have a health issue.

Document EVERYTHING, signed and dated, with pictures. First alert your immediate superior, and failing that, go up the chain of command. Make a record of every communication. If necessary, consult your company's legal counsel (if their attorney says they need to fix it, they might jump). If still nothing happens, go to OSHA or your local equivalent.

Then when they fire you for whistleblowing, take your mountain of documents to your attorney and sue their pants off for illegal termination of employment.

  • 2
    +1 for suggesting to document everything before the carnage occurs.
    – NinjaBomb
    Commented Nov 6, 2011 at 20:19
  • In the UK, you might mention it to your boss, but you have a legal responsibility to report it to a company Health and Safety representative.
    – Mark Booth
    Commented Nov 9, 2011 at 15:35

WOW -- I can't believe this situation. I wouldn't even want water on the floor of the bathroom let alone an office or server room environment. Many of the risks/hazards have been addressed here but honestly, the "cooler" which I assume is an air conditioner, shouldn't have leaked condensate onto the floor in the first place. When the portable air conditioner is replaced, be sure to get one that has an automatic safety that cuts off the unit if the condensate is full or the condensate line is blocked. Then you avoid the water on the floor issue.

  • You turn the "floor is wet" into a "server room is very hot" issue. That's great when management take environmental issues seriously, but at this poor chap's place? They'll probably wait for the silicon to melt out the CPU cores before fixing the blocked condensate line.
    – MadHatter
    Commented Nov 4, 2011 at 16:13
  • Wait until this short circuits the high amps cabling that may be there. And someone dies.
    – TomTom
    Commented Nov 4, 2011 at 18:11

I was in a similar situation where the roof had a leak and there was water in the server room. There was a power distribution panel in the room. I talked to a person that used to work for the electric company. I asked him what would happen if I would have accidentally touched the power distribution panel. He said it probably wouldn't kill you but it would explode the arm that you touched it with and the opposite limb.


In my early career I visited a site where the cleaner used the server room to store her mop bucket. The cantankerous elderly lady cast me sideways evil glances for the next 2 weeks after I issued an ultimatum to the Managing Director of the site. I left site with guarantees a locked door would be installed and the cleaner would be forever banished from the server room.

Needless to say a year later I was back on site - no locked door - soaking wet server and the UPS had short-circuited. Needless to say the tape backup had not been changed for 8 months and the a lot of people lost a lot of work. At least the cleaner had somewhere convenient to store her bucket in the interim.

The moral is bad things usually happen when people don't give a cr*p. Your situation is so absurdly bad you need to keep on moving up the chain until you can find someone who gives one. Try the hardware guy's boss- same response - up a rung until you get to the top. If you still can't find anyone who cares you need to look for another job.


In addition to all of the other answers I'd be very concerned if there was a false floor in the equation, who knows whats under there and what state it's in. If your in a warm climate you might have all sorts of critters nesting next to your servers by this point.

I've heard of putting servers in the cloud, I don't think they meant raincloud... but seriously, start migrating the software functions out, if it's damp and has been for a while, you might not know whats gotten rusty and prone to failure. Backups would be a good idea too.


Water aside, carpet + movement = static. I wonder how long before some shoe-dragging sysadmin goes to replace a component and doesn't wear his ESD strap (if he even has one)?

Common sense dictates here -- if you think it's a problem, it probably is.


I know this may seem like a pretty obvious solution, but I'll mention it anyway: Install one of those old metal clawfoot tubs; leave a hair dryer and a toaster (include pop-tarts for style) balanced on the rim; then on the outside of the server room door post a sign that reads: "Executive Suite".

Oh yeah, and while you're at it, wring out your resume and hang it up to dry somewhere.

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