130 degree water temperature

I tested the water at the kitchen sink, it was a 130 degrees.
Is that ok? What are the exceptable minimum and maximum with
in house water temperatures.

Pyramid Home Inpsections

110 to 120 is average. A dish washer operates at 140. 130 is safe.

If a dish washer needs the water hotter it has its own heater .

130 is not safe a child can get 2nd degree burns in 4 seconds .

Some one posted a great chart and it shows all the time for burns .
Water should never be above 120 degrees .
I keep mine at 110 Degrees
Roy Cooke

Here is my standard wording for water heaters:Water temperature is XXX° as measured at _________. Temperatures above 120° are considered a scald hazard and consideration should be given to lowering the water heater thermostat. (More information can be obtained at http://www.cpsc.gov/CPSCPUB/PUBS/5098.html and www.tap-water-burn.com ).


From above:
“Most adults will suffer third-degree burns if exposed to 150 degree water for two seconds. Burns will also occur with a six-second exposure to 140 degree water or with a thirty second exposure to 130 degree water. Even if the temperature is 120 degrees, a five minute exposure could result in third-degree burns.”

Even 120 degrees can lead to third degree burns under the right circumstances but it is the recommended acceptable high setting.

The following was taken from a sticker on a water heater:

Temperature Time to Produce 2nd & 3rd Settings Degree Burns on Adult Skin

160°F (71°C)
About 1/2 second

150°F (66°C)
About 1-1/2 seconds

140°F (60°C)
Less than 5 seconds

130°F (54°C)
About 30 seconds

120°F (49°C)
More than 5 minutes

80°F (27°C)

[FONT=Verdana]In the event ill advised higher [/FONT]*temperature above 120°F are maintained thermostatic mixing valves shall be installed at the out flow of the water heater supply piping or at all individual appliance fixtures to prevent scald injuries. *

*As the homeowner you are totally responsible for the regulation of your water temperature and all of the effects encountered from this action. *

All new Water heaters installed in Ontario must have the Tank temperature maintain a temp not less then 150% .
This is a new regulation to try and atop Bacteria from growing in the tank
( Can you say legioners Disease).
They then must install a mixing valve at the tank usually.
Many replacement tanks are not being done this way as the rental companies do not want to pay for the additional mixing valve .
This law came into effect earlie last year I believe.

Roy Cooke

Where did you get the info that 130 is safe???


For my American fellow members just do the conversions on temp.








Home / Publications / Amendments to the 1997 Ontario… / O. Reg. 23/04
O. Reg. 23/04
**O. Reg. 23/04
Filed February 20, 2004 **
**made under the
**Amending O. Reg. 403/97
(Building Code)

Note: Ontario Regulation 403/97 has previously been amended. Those amendments are listed in the Table of Regulations (Legislative History) which can be found at www.e-laws.gov.on.ca.
** 1. (1) Sentence of Ontario Regulation 403/97 is revoked and the following substituted:**
** (1) **Combustible plumbing fixtures are permitted in a building required to be of *noncombustible construction *if they are constructed of material having a flame‑spread rating and smoke developed classification permitted in Subsection 3.1.13.
** (2) Article of the Regulation is revoked and the following substituted: Bathrooms and Plumbing Fixtures
** (1) **The *flame‑spread rating *of interior wall and ceiling finishes for a bathroom in a suite of residential occupancy shall be not more than 200.
** (2) Plumbing fixtures shall have a flame‑spread rating not more than 200.
** (3) Article of the Regulation is amended by adding the following Sentences:

** (4) **Except as permitted in Sentences (5) to (7), *plumbing fixtures *in a *building *regulated by the provisions of Subsection 3.2.6. shall have a smoke developed classification not more than 300.
** (5) **A plumbing fixture that is not located in a Group B occupancy need not comply with Sentence (4) if the building is sprinklered.
** (6) **A plumbing fixture may have a smoke developed classification more than 300 but not more than 500 if
(a) it is in a room where the wall surfaces have a smoke developed classification not more than 200, and
(b) it is located in,
(i) a Group C occupancy, or
(ii) a Group B
and the building is sprinklered.
** (7) A therapeutic bathing system in a Group B occupancy need not comply with Sentence (4) if the room in which it is located,
(a) does not open directly into patients’ or residents’ sleeping rooms, and
(b) is sprinklered.
** 2. Sentence of the Regulation is revoked and the following substituted:

** (1) A water distribution system supplying hot water to plumbing fixtures shall conform to the requirements in Subsection 7.6.5.
** 3. Article of the Regulation is revoked and the following substituted: Reserved
** 4. Section 7.6. of the Regulation is amended by adding the following Subsection:

7.6.5. Water Temperature Control Maximum Temperature of Hot Water
**(1) **Except as provided in Sentences (2) and, the maximum temperature of hot water supplied by fittings to *fixtures *in a *residential occupancy *shall not exceed 49°C.
**(2) **Sentence (1) does not apply to hot water supplied to installed dishwashers or clothes washers. Showers
**(1) **Except as provided in Sentence (2), all shower valves shall be pressure-balanced or thermostatic-mixing valves, conforming to CAN/CSA-B125, “Plumbing Fittings”.
**(2) **No pressure-balanced or thermostatic-mixing valve is required for a shower if the hot water supply for the shower is controlled by a master thermostatic-mixing valve conforming to CAN/CSA-B125, “Plumbing Fittings”.
**(3) **Pressure-balanced or thermostatic-mixing valves shall be
(a) designed so that the outlet temperature does not exceed 49°C, or
(b) equipped with high-limit stops and adjusted to a maximum hot water setting of 49°C. Temperature Control Devices
**(1) **A *water distribution system *supplying hot water to any bathtub, shower or hand basin that is accessible to a patient or resident in a Group B, Division 2 or 3 *occupancy *or a resident of a group home, home for special care or residence for developmentally-handicapped adults shall have one or more temperature gauges and control devices that are
(a) accessible only to supervisory staff, and
(b) capable of being adjusted to ensure that the temperature of the water supplied to the fixtures does not exceed 49°C.
** 5. Sentence of the Regulation is revoked and the following substituted:

**(2) **A water distribution system supplying hot water to plumbing fixtures shall conform to the requirements in Subsection 7.6.5.
** 6. Section 12.1. of the Regulation is amended by adding the following Subsection:

12.1.5. Transition, September 2004 Transitional Rule
**(1) **Subject to Sentence (2), this Code as it reads on August 31, 2004 is deemed to continue in force with respect to construction
(a) for which a permit is issued before September 1, 2004, or
(b) for which the working drawings, plans and specifications are substantially completed before September 1, 2004 and for which an application for a permit is made before December 1, 2004 under this Code as it reads on August 31, 2004.
(2) Sentence (1) does not apply unless the construction is commenced within six months after the permit is issued.
** 7. (1) Subject to subsection (2), this Regulation comes into force on the day it is filed.

** (2) Sections 2, 3, 4 and 5 come into force on the later of September 1, 2004 and the day this Regulation is filed.

This document is prepared for purposes of convenience only, and for accurate reference recourse should be had to the Official Volumes.



| central site | OBC home | about us | contact | search | sitemap | français |
| Publications | Licensing & Registration | Interpretations | Appeals & Approvals| Training | CodeNews |


Privacy | External Links Disclaimer

Copyright information:© Queen’s Printer for Ontario, 2002](http://www.gov.on.ca/MBS/english/common/queens.html)
Last Modified: August 2, 2002
l note


Watts will furnish these free DVD’s
They are informational as well as promo for their products


Linus. I typed that in wrong. It was 2:a.m. Should have proof read it. It should have been 120. I got that from AO Smith. As for as dishwashers,that was an example, I know they have built in heaters,but the hotter your tap water is the less energy your dishwasher uses. I better read these over better from now on,I could have got some one in trouble.

Cost is the same in the dish washer or in the electric heater.
Many of the new soaps do not require as the water to be 150 degrees .
Roy Cooke

Go here http://www.watts.com/pdf/F-H20LS-Reprint.pdf and then to plate 2 Page ten
This is a great hand out . Some one posted it before

Roy Cooke

The woman who sued McDonalds and won was scalded with 135 degree water which being a food service were required to maintain.

On the other end,what if the average temperature at the faucets is 90 degrees is that a reportable defect?

It is not, IMO, if the water heater is capable of making it hotter.

http://www.cpsc.gov/CPSCPUB/PUBS/5098.pdf is the updated link

That is false. The temperature that they were serving was ~185F. Liquids at that temperature are deemed “Not fit for human consumption”

You are arguing with a man no longer in this world Chuck.