# List of States allowing dishwasher air gap **URL:** \ **Category:** Plumbing Inspections\ **Created:** [February 13, 2018, 1:29pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935 "2018-02-13T13:29:56Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 1:29pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/1 "2018-02-13T13:29:56Z")
I’m trying to put together a comprehensive list of the States that require an air gap on the dishwasher, and those that will accept a high loop. I have already entered information for California and Utah, because I know those two. Please go to the link and add your information. Thanks for participating.[Is a dishwasher air gap required in your State - Google Docs](https://docs.google.com/document/d/1SKacZ435cJl934zACNvh8KtMvQfWZu3yIzTn3ePuXUo/edit?usp=sharing) ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [February 13, 2018, 1:37pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/2 "2018-02-13T13:37:37Z")
Frank, what is the purpose/intended use for this list? ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 1:52pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/3 "2018-02-13T13:52:33Z")
> [@jjonas](#): > > Frank, what is the purpose/intended use for this list? I just think it’s useful information for comparison. I haven’t decided yet how to use it. But when I was looking for this information, it wasn’t available in one place. ---
**Author:** ![jolson8](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@jolson8](https://forum.nachi.org/u/jolson8)\ **Post date:** [February 13, 2018, 2:05pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/4 "2018-02-13T14:05:18Z")
When did it become code? Is it a defect or a code violation? Wisconsin is above or below the countertop. Below is a standpipe. ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [February 13, 2018, 2:06pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/5 "2018-02-13T14:06:26Z")
Ok, but in my opinion, it is not entirely useful unless it contains **all** the facts. In example, MN did not require Air Gaps until Jan 2016, which means that 99% of all homes I inspect will not be required to have an air gap. Prior to 2016, all DW’s required high loops. Now, which detail is more important to an inspector? Note: All this info was sent to Frank by myself for his listing, so this is not an attack on someone elses post. Frank chose not to use the provided information. ---
**Author:** ![jolson8](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@jolson8](https://forum.nachi.org/u/jolson8)\ **Post date:** [February 13, 2018, 2:08pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/6 "2018-02-13T14:08:46Z")
[Does a Dishwasher require a Air Gap?](https://www.nachi.org/forum/f22/dishwasher-require-air-gap-59287/) Check out old forum ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 2:11pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/7 "2018-02-13T14:11:01Z")
> [@jjonas](#): > > Ok, but in my opinion, it is not entirely useful unless it contains **all** the facts. In example, MN did not require Air Gaps until Jan 2016, which means that 99% of all homes I inspect will not be required to have an air gap. Prior to 2016, all DW’s required high loops. Now, which detail is more important to an inspector? > > Note: All this info was sent to Frank by myself for his listing, so this is not an attack on someone elses post. Frank chose not to use the provided information. I’m just concerned with current requirements. ---
**Author:** ![rlewis5](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rlewis5/32/337040_2.png) [@rlewis5](https://forum.nachi.org/u/rlewis5)\ **Post date:** [February 13, 2018, 2:23pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/8 "2018-02-13T14:23:31Z")
I have never seen one around here. From the GE dishwasher installation manual. DRAIN REQUIREMENTS • Follow local codes and ordinances. • Do not exceed 10’ distance to drain. • Do not connect drain lines from other devices to the dishwasher drain hose. NOTE: Air gap must be used if waste tee or disposer connection is less than 18" above floor to prevent siphoning. DETERMINE DRAIN METHOD The type of drain installation depends on the following questions. ■ Do local codes or ordinances require an air gap? ■ Is waste tee less than 18" above floor? If the answer to either question is YES, Method 1 MUST be used. • If the answers are NO, either method may be used. Method 1 – Air Gap with Waste Tee or Disposer An air gap must be used when required by local codes and ordinances. The air gap must be installed according to manufacturer’s instructions Method 2 – Drain Hose Routing When not using an air gap, the drain hose must be routed to form a high loop of at least 32" to prevent siphoning. > **[Dispatcher](https://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=31-30588.pdf)** > > 1739.76 KB ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 2:35pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/9 "2018-02-13T14:35:36Z")
> [@rlewis5](#): > > I have never seen one around here. > > From the GE dishwasher installation manual. > > DRAIN REQUIREMENTS > • Follow local codes and ordinances. > • Do not exceed 10’ distance to drain. > • Do not connect drain lines from other devices to the > dishwasher drain hose. > NOTE: Air gap must be used if waste tee or disposer connection > is less than 18" above floor to prevent siphoning. > DETERMINE DRAIN METHOD > The type of drain installation depends on the following > questions. > ■ Do local codes or ordinances require an air gap? > ■ Is waste tee less than 18" above floor? > If the answer to either question is YES, Method 1 MUST > be used. > • If the answers are NO, either method may be used. > > Method 1 – Air Gap with Waste Tee or Disposer > An air gap must be used when required by local codes and ordinances. > The air gap must be installed according to manufacturer’s instructions > > Method 2 – Drain Hose Routing > When not using an air gap, the drain hose must be routed to form a high > loop of at least 32" to prevent siphoning. > > [http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=31-30588.pdf](http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=31-30588.pdf) I’m just looking for a simple air gap required, or high loop is okay. Don’t overthink it. Keep it simple. Have you looked at the document? ---
**Author:** ![rlewis5](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rlewis5/32/337040_2.png) [@rlewis5](https://forum.nachi.org/u/rlewis5)\ **Post date:** [February 13, 2018, 2:38pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/10 "2018-02-13T14:38:11Z")
> [@frotte](#): > > I’m just looking for a simple air gap required, or high loop is okay. Don’t overthink it. Keep it simple. Have you looked at the document? You mean the one I posted…Yes! ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 2:46pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/11 "2018-02-13T14:46:42Z")
> [@rlewis5](#): > > You mean the one I posted…Yes! No. For example : California :Air gap required Utah : High loop okay ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 2:55pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/12 "2018-02-13T14:55:16Z")
I notice that there is nothing filled in for Florida yet. ---
**Author:** ![rlewis5](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rlewis5/32/337040_2.png) [@rlewis5](https://forum.nachi.org/u/rlewis5)\ **Post date:** [February 13, 2018, 2:57pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/13 "2018-02-13T14:57:12Z")
Here is the Florida code. It appears you can do what you want. What do you think? 802.1.6 Domestic dishwashing machines. Domestic dishwashing machines shall discharge indirectly through an air gap or air break into a standpipe or waste receptor in accordance with Section 802.2, or discharge into a wye-branch fitting on the tailpiece of the kitchen sink or the dishwasher connection of a food waste grinder. The waste line of a domestic dishwashing machine discharging into a kitchen sink tailpiece or food waste grinder shall connect to a deck-mounted air gap or the waste line shall rise and be securely fastened to the underside of the sink rim or counter. ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [February 13, 2018, 3:20pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/14 "2018-02-13T15:20:18Z")
> [@frotte](#): > > I’m just concerned with current requirements. Now you know why you can’t find a similar list on Google. Not a simple list like you want. ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 8:26pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/15 "2018-02-13T20:26:26Z")
> [@rlewis5](#): > > Here is the Florida code. > It appears you can do what you want. > What do you think? > > 802.1.6 Domestic dishwashing machines. > Domestic dishwashing machines shall discharge indirectly through an > air gap or air break into a standpipe or waste receptor in > accordance with Section 802.2, or discharge into a > wye-branch fitting on the tailpiece of the kitchen sink or the > dishwasher connection of a food waste grinder. The waste > line of a domestic dishwashing machine discharging into a > kitchen sink tailpiece or food waste grinder shall connect to > a deck-mounted air gap or the waste line shall rise and be > securely fastened to the underside of the sink rim or counter. Which means that the high loop is okay for Florida. That’s all I wanted to know. K.I.S.S. ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 13, 2018, 8:28pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/16 "2018-02-13T20:28:52Z")
Six States done, and 44 to go. ---
**Author:** ![dbowers](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/dbowers/32/59651_2.png) [@dbowers](https://forum.nachi.org/u/dbowers)\ **Post date:** [February 14, 2018, 6:00am UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/17 "2018-02-14T06:00:45Z")
Kansas & Missouri have NO state wide licensing for plumbers OR builders, etc NOR a state wide adopted code SO every city, county or municipality can be different. Wonder how many other states are like that. ---
**Author:** ![bkelly2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/bkelly2/32/58257_2.png) [@bkelly2](https://forum.nachi.org/u/bkelly2)\ **Post date:** [February 18, 2018, 5:35pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/18 "2018-02-18T17:35:45Z")
> [@jjonas](#): > > Frank, what is the purpose/intended use for this list? I believe he is instituting his patent pending AirGapCheck Warranty program, might actually be the best warranty program out there right now. (az is high loop) ---
**Author:** ![frotte](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/frotte/32/58483_2.png) [@frotte](https://forum.nachi.org/u/frotte)\ **Post date:** [February 19, 2018, 4:09pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/19 "2018-02-19T16:09:28Z")
> [@bkelly2](#): > > I believe he is instituting his patent pending AirGapCheck Warranty program, might actually be the best warranty program out there right now. > > (az is high loop) Shhhh… keep it on the downlow. 🙂 ---
**Author:** ![jolson8](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@jolson8](https://forum.nachi.org/u/jolson8)\ **Post date:** [February 19, 2018, 4:14pm UTC](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935/20 "2018-02-19T16:14:00Z")
Will it be a Dishwasher BUY BACK? [Next page](https://forum.nachi.org/t/list-of-states-allowing-dishwasher-air-gap/121935.md?page=2)