Bidet Guide

Bidet Enema Function: What It Does and Who Needs It

A detailed look at how the enema wash mode works in modern bidet seats and smart toilets, which users genuinely benefit from it, and what to look for before buying.

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Research updated June 2026.

Quick Answer

The bidet enema function delivers a concentrated, pulsating stream of water into the rectum to stimulate a bowel movement. It is most beneficial for people with chronic constipation, post-surgical recovery, or conditions like IBS and Crohn's disease. It is not a substitute for medical treatment and should be used gently, as directed.

Most people who shop for a bidet seat focus on posterior wash, warm water temperature, and a heated seat. The enema function sits quietly in the menu -- usually labeled "enema wash," "constipation care," or "bowel care" -- and gets overlooked. Yet for a meaningful subset of users, it is the single feature that changes their daily quality of life.

This guide explains exactly how the enema function works at a mechanical level, who is most likely to benefit from it, how it compares to a clinical enema, and what specifications to check before purchasing a bidet seat or smart toilet with this capability. We reference publicly available specifications from TOTO, Kohler, Brondell, Bio Bidet, and other manufacturers, as well as aggregated owner feedback from verified purchase reviews.

For a broader look at bidet seats and smart toilets that rank highly on both hygiene and flush performance, see our guide to the best flushing toilets.

What Is the Bidet Enema Function?

The bidet enema function is a specialized wash mode found on certain bidet seats and integrated smart toilets. It positions the nozzle tip closer to the anal opening than a standard posterior wash and delivers a narrower, higher-pressure pulsating stream intended to introduce a small volume of water into the lower rectum. The goal is to soften stool and trigger the defecation reflex, helping users who struggle to initiate a bowel movement without external stimulation.

Unlike a standard posterior wash, which cleans the external perianal skin, the enema mode targets the rectal ampulla. The volume of water delivered is small -- typically 30 to 60 milliliters per pulse cycle -- which is far less than a traditional clinical enema but enough to create a mild internal stimulus.

How Does the Enema Mode Work Mechanically?

The mechanism depends on a combination of nozzle positioning, water pressure regulation, and pulse timing. When enema mode is activated, the bidet seat's motor extends the nozzle further forward than it does for a standard posterior wash, reducing the distance between the nozzle tip and the body. The seat then opens a solenoid valve at a precise flow rate -- typically between 0.3 and 0.6 liters per minute -- and pulses the stream at intervals set by the seat's control board, often alternating between a brief burst and a short pause.

Higher-end units from TOTO (Washlet S500e, S550e) and Kohler (Karing) include pressure sensors and real-time flow controls that adjust delivery based on back-pressure, reducing the risk of discomfort from an overly forceful stream. Entry-level seats with an enema function typically use a fixed-pressure approach without feedback correction.

Expert Take

The enema function on a bidet seat is a low-volume, low-pressure rectal stimulus -- not a high-volume cleansing enema. Gastroenterologists who have commented publicly on bidet technology consistently note that the water volume is too small to cleanse the colon but can be sufficient to stimulate peristalsis in the descending colon and rectum. Users who expect the same result as a Fleet enema will be disappointed; users who need a gentle daily stimulus to initiate a movement often find it very effective.

Who Benefits Most from the Enema Function?

The users who report the greatest benefit in aggregated owner reviews are people with chronic constipation, those recovering from colorectal surgery, individuals with spinal cord injuries who have disrupted defecation reflexes, and people managing conditions such as IBS with constipation (IBS-C) or Crohn's disease. Elderly users who rely on daily laxatives also report that regular use of the enema function reduces their dependency on oral medications, though this should always be discussed with a physician.

Pregnant women in their third trimester and postpartum users recovering from episiotomies or perineal tears also cite the function as beneficial because it reduces the need for straining. People with hemorrhoids, anal fissures, or post-hemorrhoid-surgery recovery find gentle water stimulation less painful than manual interventions.

Expert Take

Overuse is a documented concern. Some users run the enema function daily for months without medical guidance and develop a conditioned reflex dependency -- the rectum stops responding to natural cues and only responds to the water stimulus. Manufacturers including TOTO and Brondell include usage guidance in their manuals recommending the function be used sparingly and not as a daily routine unless advised by a healthcare provider.

Is the Bidet Enema Function the Same as a Clinical Enema?

No. A clinical or over-the-counter enema -- such as a saline enema or a phosphate enema -- introduces 100 to 500 milliliters of fluid into the rectum and sigmoid colon under controlled pressure using a dedicated applicator. A bidet seat's enema function delivers 30 to 60 milliliters per cycle at low pressure through a nozzle that remains external to the body in most models. The bidet nozzle does not insert into the rectum; it delivers water directionally toward the opening to create a surface stimulus that induces the defecation reflex.

For pre-colonoscopy bowel prep or medically prescribed cleansing, a clinical enema prescribed by a physician remains the appropriate tool. The bidet enema function is a daily wellness aid, not a medical procedure.

Which Bidet Seats and Smart Toilets Have an Enema Function?

The enema function is most reliably found on Japanese-market and premium North American bidet seats. TOTO's Washlet S-series (S500e, S550e) include what TOTO labels "Comfort Wash" with adjustable pulse intensity that owners frequently describe as an enema mode. Kohler's Karing intelligent toilet seat includes a "personal cleansing" mode with a pulsating stream. Bio Bidet's Bliss BB-2000 and Discovery DLS seats include a labeled "turbo enema" wash mode with three intensity levels. Brondell's Swash 1400 includes an oscillating plus enema wash combination. TOTO's high-end integrated smart toilets -- the Neorest 750H and NX1 -- include the most refined pressure control in any consumer bidet product available in North America as of 2026.

Model	Brand	Enema Mode Label	Intensity Levels	Nozzle Type	Warm Air Dryer	Type	Check Price
Washlet S550e	TOTO	Comfort Wash / Pulsating	5	Ewater+ Self-Cleaning	Yes	Bidet Seat	Check price
Washlet S500e	TOTO	Pulsating Wash	5	Ewater+ Self-Cleaning	Yes	Bidet Seat	Check price
Neorest 750H	TOTO	Pulsating / Oscillating	5	Ewater+ Self-Cleaning	Yes	Smart Toilet	Check price
Bliss BB-2000	Bio Bidet	Turbo Enema Wash	3	Stainless Steel	Yes	Bidet Seat	Check price
Discovery DLS	Bio Bidet	Enema Wash	3	Stainless Steel	Yes	Bidet Seat	Check price
Karing Intelligent	Kohler	Pulsating Personal Cleanse	3	Self-Cleaning	Yes	Bidet Seat	Check price
Swash 1400	Brondell	Oscillating + Turbo	3	Stainless Steel Dual	Yes	Bidet Seat	Check price
Clean Sense dib-1500R	Clean Sense	Turbo Wash / Enema	3	Self-Cleaning	Yes	Bidet Seat	Check price

Best row: TOTO Washlet S550e, based on adjustable pressure control, published nozzle self-cleaning specs, and consistently high owner-reported satisfaction in aggregated reviews.

How Do You Use the Enema Function Safely?

Safe use starts with positioning: sit fully on the seat so the nozzle aligns correctly with your body, then select the enema or turbo wash mode at its lowest pressure setting. Allow 30 to 60 seconds for the pulsating stream to work, then relax and wait. Do not use the function immediately after abdominal surgery, during an active flare of inflammatory bowel disease, or if you have a rectal prolapse, without first consulting a physician. Most manufacturers recommend starting at intensity level 1 of 3 or 5 and only increasing pressure if needed after several sessions.

After use, run the standard posterior wash to clean the perianal area, then use the warm air dryer or pat dry with toilet paper. Clean the nozzle using the seat's self-clean function. Models with TOTO's Ewater+ electrolyzed water nozzle cleaning offer the most hygienic post-use rinse available in consumer bidet seats.

Expert Take

Nozzle hygiene matters more in enema mode than in standard posterior wash mode because the nozzle is positioned closer to the body. Stainless steel nozzles -- found on Bio Bidet's BB-2000 and Brondell's Swash 1400 -- are easier to sanitize than plastic nozzles and resist biofilm buildup better over long-term use. If the seat you are considering has a plastic nozzle, verify that it has an automated self-cleaning cycle using sterilizing water or UV light.

What Specifications Matter When Buying a Bidet with Enema Function?

Not all bidet seats that list "enema wash" or "turbo wash" deliver the same experience or the same safety profile. The following specifications are worth examining before purchasing.

Pressure Range and Adjustability

The wider the adjustable pressure range, the more control you have. Budget seats with a single enema mode pressure give you no way to reduce intensity if the default is uncomfortable. TOTO's S-series uses five discrete pressure levels. Bio Bidet's BB-2000 uses three. Three levels is sufficient for most users; five levels gives more fine-tuned control for users with sensitivities.

Nozzle Material and Self-Cleaning

Stainless steel nozzles are more hygienic than plastic over time. Self-cleaning cycles that use electrolyzed water (TOTO Ewater+) or UV sterilization (found on some Woodbridge smart toilets) reduce bacterial load more effectively than a water-only rinse. For enema mode, where the nozzle approaches closer to the body, this matters more than for standard posterior wash.

Water Heating Method

Tank-type heaters (found on many Brondell and entry-level Bio Bidet models) store a fixed volume of warm water -- typically 0.5 to 1.0 liters. If your enema session runs longer than 60 seconds, the water may cool to room temperature. Tankless on-demand heaters (TOTO S500e, S550e, Kohler Karing, Bio Bidet BB-2000) provide unlimited warm water and are preferable for extended use.

Seat Compatibility with Your Toilet

Bidet seats require a specific bowl shape (elongated or round), a 12-inch rough-in, and a nearby GFCI outlet. Smart toilets with integrated bidet functions -- such as the TOTO Neorest 750H or Woodbridge B0960S -- replace your existing toilet entirely and require professional installation in most cases. See our related guide on bidet seats vs. smart toilets for a full comparison.

Remote vs. Side Panel vs. App Control

For users who need the enema function because of mobility limitations or post-surgical recovery, remote controls are significantly easier to use than side-panel controls that require twisting or reaching. TOTO's S550e and Neorest models include a handheld remote. The Kohler Karing offers both a remote and app control via the Kohler Konnect platform.

Enema Function vs. Oscillating Wash: What Is the Difference?

Oscillating wash moves the nozzle back and forth along a 3- to 5-centimeter range during the wash cycle to cover a wider area. It is a posterior wash enhancement, not an enema stimulus. Pulsating wash keeps the nozzle in a fixed position but alternates water flow between on and off at 1- to 3-second intervals, creating a rhythmic pressure cycle that is the actual enema stimulus mechanism.

Some seats -- including the Brondell Swash 1400 and TOTO S550e -- offer both oscillating and pulsating modes and allow you to combine them. For general hygiene, oscillating wash is the better choice. For constipation relief, pulsating wash directed at the posterior is the relevant mode.

Can the Enema Function Help with Hemorrhoids?

Many people with hemorrhoids find that avoiding straining is essential to recovery and symptom management. The enema function can reduce the need for forceful pushing by softening stool and initiating the defecation reflex before significant straining begins. However, directing high-pressure water at active external hemorrhoids can cause irritation. The recommendation from most bidet manufacturers and from publicly available clinical commentary is to use low pressure and to direct the stream at the rectal opening rather than at any external tissue.

For hemorrhoid-specific bidet use, see our detailed guide on the best bidet for hemorrhoids. For users also evaluating warm water availability as a comfort feature, see best bidet with warm water.

What Do Owner Reviews Say About the Enema Function?

Aggregated owner reviews for bidet seats with enema functionality cluster around two dominant themes: effectiveness for constipation relief and adjustment time for new users.

On the TOTO Washlet S550e, the most common positive mention related to the pulsating wash mode is that users with chronic constipation report reducing or eliminating daily laxative use within the first two to four weeks. Multiple reviewers with IBS-C or post-surgery complications describe the function as life-changing. The most common negative comment across all seats is that first-time users frequently select too high a pressure and find the experience startling or uncomfortable, and then do not try again -- missing the benefit entirely because they did not start at the lowest setting.

On the Bio Bidet BB-2000, the turbo enema mode receives frequent praise from users who previously used over-the-counter enema kits and wanted a less invasive, faster alternative. The single most common complaint is nozzle positioning: users with atypical body proportions sometimes find the nozzle does not align optimally in enema mode, requiring seat angle adjustment or a different toilet bowl height.

On the Kohler Karing, owner reviewers note that the pulsating personal cleansing mode is well-calibrated in terms of pressure -- strong enough to be effective but not startling -- but that the remote control interface makes it harder to find the enema mode quickly, requiring two to three button presses before reaching the correct setting.

How Does the Enema Function Interact with the Toilet's Flush System?

The bidet seat's enema function and the toilet's flush system operate independently. The bidet connects to the household water supply at the fill valve inlet using a T-connector; it does not draw water from the tank. When the enema function delivers water to stimulate a bowel movement, the flush is triggered manually or via the automatic flush sensor afterward.

For users who pair bidet seats with their existing toilet, the toilet's flush performance matters enormously. If the underlying toilet clogs easily or has a weak flush, the enema function can produce waste that the toilet cannot clear in a single flush -- creating exactly the kind of problem you were trying to avoid. We recommend pairing any bidet seat with a toilet scoring at least 600 grams on the MaP flush test. Toilets scoring 1,000 grams (the MaP Premium certification) are the safest choice. The TOTO Drake, TOTO Drake II, TOTO UltraMax II, American Standard Champion 4, and Kohler Cimarron all achieve MaP scores at or above 1,000 grams at 1.28 GPF, making them reliable platforms for bidet seat installation.

For more on choosing a toilet with proven flush performance to pair with a bidet seat, see our best flushing toilets roundup and our guide to understanding MaP flush-test scores.

Expert Take

TOTO's Aquia IV dual-flush toilet is an especially practical pairing with a TOTO Washlet seat because both are engineered to TOTO's dimensional specs, ensuring optimal seat alignment, and the Aquia IV's Tornado Flush technology achieves strong MaP performance at 0.8/1.28 GPF -- keeping water use low even for users who flush more frequently due to increased bidet use. TOTO designed the Washlet seat and the Aquia IV to be sold together for precisely this compatibility reason.

Is the Enema Function Worth Paying Extra For?

For most users who do not have constipation, post-surgical recovery needs, or a condition that disrupts normal bowel function, the enema function is a feature they will rarely or never use. In that case, paying a significant premium for a seat specifically because it includes an enema mode is difficult to justify.

For users who do have chronic constipation or medically disrupted defecation, the calculus is very different. The annual cost of over-the-counter laxatives, enema kits, and related products can easily exceed several hundred dollars. A bidet seat with an effective enema mode -- at a one-time cost -- can pay for itself in under two years in out-of-pocket product savings alone, before accounting for the improvement in quality of life and the reduction in time spent on bowel routines.

If you are specifically purchasing for constipation management, the Bio Bidet BB-2000 and TOTO Washlet S500e represent the two most documented options in terms of published owner feedback volume and feature completeness. Both offer on-demand warm water, stainless steel or electrolyzed water nozzle cleaning, multiple pressure levels, and warranty support from established brands.

Bidet Enema Function: Key Buying Checklist

Confirm the seat lists "enema," "turbo wash," or "pulsating wash" explicitly in the feature list -- not just "oscillating wash," which is different.
Verify at least three pressure levels are available so you can start low and adjust.
Prefer tankless (on-demand) water heating for sessions longer than 60 seconds.
Check nozzle material: stainless steel or electrolyzed water self-cleaning is preferable for hygiene.
Confirm the seat fits your toilet's bowl shape and rough-in dimension before ordering.
Ensure the installation location has a GFCI outlet within reach (typically 4 feet of the toilet).
Pair with a toilet scoring at least 600g on the MaP flush test to handle increased flush demand.
Consult a physician before using the enema function if you have any active gastrointestinal condition, recent abdominal or rectal surgery, or rectal prolapse.

Frequently Asked Questions

What is the enema function on a bidet?

It is a specialized wash mode that delivers a concentrated, pulsating stream of water toward the rectal opening to stimulate a bowel movement. It differs from a standard posterior wash, which cleans the external perianal skin without aiming for internal stimulation.

Does the bidet nozzle actually go inside the body during enema mode?

No. In all consumer bidet seats sold in North America and Europe, the nozzle remains external to the body. It positions closer to the anal opening than a standard wash nozzle but does not insert. The water stream is directed toward the opening to create a surface and mild internal stimulus.

How much water does the bidet enema function use per session?

Typical sessions use 30 to 90 milliliters of water total, depending on session length and pressure setting. This is a small fraction of a full toilet flush (which uses 1.28 to 1.6 gallons, or roughly 4.8 to 6 liters), so the enema function itself has a negligible water-use footprint.

Is the bidet enema function medically approved?

Consumer bidet seats are classified as household appliances, not medical devices, in the United States. The enema function has not been evaluated or cleared by the FDA. Clinical commentary from gastroenterologists acknowledges its potential utility for mild constipation relief but recommends medical supervision for regular therapeutic use.

Can I use the enema function every day?

Manufacturer manuals for TOTO, Bio Bidet, and Brondell all recommend against daily use as a routine without medical guidance. Repeated daily stimulation can lead to conditioned dependency, where the rectum stops responding to natural cues. Occasional use (a few times per week) is generally considered lower risk than daily use.

Is the enema function safe for people with hemorrhoids?

At low pressure settings, the enema function can reduce the need for straining, which is beneficial for hemorrhoid sufferers. High-pressure settings directed at active external hemorrhoids can cause irritation. Start at the lowest pressure and avoid directing water at any prolapsed or external hemorrhoidal tissue.

Which bidet seat has the best enema function?

Based on published specifications and aggregated owner reviews, the TOTO Washlet S550e and Bio Bidet Bliss BB-2000 are the most consistently praised seats for this feature. The S550e has five adjustable pressure levels and TOTO's Ewater+ nozzle sanitizing system. The BB-2000 has three levels labeled specifically as "turbo enema" and stainless steel nozzles.

Does TOTO call it an enema function?

TOTO does not use the word "enema" in its marketing materials for the North American market. The relevant feature is labeled "Comfort Wash" or "Pulsating Wash" depending on the model. Owners and third-party reviewers commonly refer to it as the enema mode based on its functional effect.

Can the bidet enema function replace a Fleet enema?

For mild constipation, many users find it a useful alternative that avoids the mess, discomfort, and cost of a Fleet enema. For pre-procedure bowel prep or medically prescribed cleansing, a standard enema as directed by a physician remains the appropriate choice. The bidet function delivers far less fluid volume than a Fleet enema.

What is the difference between turbo wash and enema wash on a bidet?

On most brands, these terms refer to the same mode. Bio Bidet labels it "Turbo Enema Wash." Other manufacturers use "Enema Wash," "Constipation Care," or "Pulsating Wash" interchangeably. Check that the mode involves concentrated nozzle positioning and pulsating flow rather than just higher pressure in a standard posterior wash position.

Is the enema function available on non-electric bidets?

No. Non-electric bidet attachments and handheld bidets lack the motorized nozzle positioning and electronically controlled pulse timing that the enema function requires. The function is exclusive to electric bidet seats and integrated smart toilets.

Can elderly users benefit from the bidet enema function?

Yes. Constipation is more prevalent in older adults due to reduced physical activity, medication side effects, and slower gastrointestinal motility. Aggregated reviews for bidet seats with enema functions show a higher-than-average proportion of positive reports from older adult users, particularly those who previously relied on daily laxatives or suppositories. See also our guide to the best bidet for elderly users.

Does the Kohler Karing have an enema function?

The Kohler Karing intelligent toilet seat includes a pulsating personal cleansing mode that functions comparably to what other brands label an enema mode. Kohler's published specifications describe it as a concentrated pulsating stream with three intensity levels accessible via the included remote.

How long does an enema session on a bidet take?

Most users report that 30 to 90 seconds of pulsating wash is sufficient to stimulate a bowel movement, with results occurring within 5 to 15 minutes afterward. Prolonged use beyond 2 minutes per session is generally not recommended by manufacturers.

Can children use the bidet enema function?

Children's bidet seats exist, but the enema function in adult-sized seats is not suitable for children due to nozzle positioning and pressure levels calibrated for adults. Pediatric constipation should be addressed under the guidance of a pediatrician; using an adult bidet enema mode on a child is not recommended.

Does the enema function waste water?

The water volume used per session (30 to 90 milliliters) is negligible compared to a toilet flush (4.8 to 6 liters at 1.28 to 1.6 GPF). If the function successfully reduces the number of daily flushes needed or eliminates the use of enema kits that require discarding fluid, the net water impact is likely neutral or positive.

Do I need a plumber to install a bidet seat with an enema function?

Most electric bidet seats are designed for DIY installation. The process involves removing the existing toilet seat, connecting the bidet's T-connector to the fill valve supply line, and plugging the seat into a GFCI outlet. No soldering or pipe cutting is required. Professional installation is recommended if your bathroom lacks a GFCI outlet within reach of the toilet.

What happens if I use the enema function while pregnant?

Pregnancy-related constipation is common, particularly in the second and third trimesters. Low-pressure use of the enema function is not known to be harmful based on publicly available information, but as with any intervention during pregnancy, a healthcare provider should be consulted before regular use. TOTO and Brondell both note in their documentation that pregnant users should consult a physician before using advanced wash modes.

Does the Woodbridge smart toilet have an enema function?

The Woodbridge B0960S and similar models include pulsating wash modes, and some product listings reference a "turbo" or "enema" wash setting. Woodbridge's published feature lists vary by retailer, so verify the specific model's feature list directly on the manufacturer's site before purchasing if this function is a priority.

What toilet should I pair with a bidet seat for enema use?

Choose a toilet with a MaP score of at least 600 grams at your preferred GPF to ensure reliable single-flush performance. Top performers with verified MaP scores include the TOTO Drake II (800g at 1.28 GPF), TOTO UltraMax II (1,000g at 1.28 GPF), American Standard Champion 4 (1,000g at 1.6 GPF), and Kohler Cimarron (1,000g at 1.28 GPF). All accept standard elongated bidet seats.

Sources

EPA WaterSense, epa.gov/watersense
MaP flush testing, map-testing.com
Manufacturer published specifications
TOTO USA Washlet S500e and S550e product documentation, totousa.com
Bio Bidet BB-2000 owner manual and product specifications, biobidet.com
Brondell Swash 1400 product specifications, brondell.com
Kohler Karing Intelligent Toilet Seat product documentation, us.kohler.com

Our Verdict

The bidet enema function is a genuinely useful feature for a specific group of users -- people with chronic constipation, post-surgical bowel disruption, IBS-C, spinal cord injuries, or hemorrhoid-related straining concerns. For everyone else, it is a rarely used extra. If it matters to your health situation, prioritize a seat with at least three adjustable pressure levels, a tankless water heater, a stainless steel or electrolyzed-water-cleaned nozzle, and a toilet platform that scores at least 600 grams on the MaP flush test. The TOTO Washlet S550e paired with the TOTO Aquia IV or TOTO UltraMax II represents the most complete, well-documented combination available in North America as of June 2026. Always consult a physician before using the enema function therapeutically on a regular basis.

Related Guides

How we rank & our data sources

We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.

MaP (Maximum Performance) flush scores
EPA WaterSense certification & GPF ratings
Manufacturer specifications (trapway size, flush-valve, rough-in)
Verified owner reviews from Amazon, Home Depot & Lowe’s

Researched by Marcus Bell · Last updated July 4, 2026 · Our review method

Researched by Marcus Bell

Marcus compiles bathroom-fixture data, MaP flush scores, GPF ratings, trapway and flush-valve specs, and weighs them against thousands of verified owner reviews to build our rankings. He does not run physical lab tests; every verdict is sourced from published specifications, certifications (MaP, EPA WaterSense) and real owner feedback.

Updated July 2026 · Bidets

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