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Rotten Egg Smell in Water

Mast Family Culligan’s Sulfur water filtration is certified to NSF/ANSI 42 for hydrogen sulfide reduction in Southwest Florida.

Does Your Water Smell Like Sulfur or Rotten Eggs in Southwest Florida?

Usually, if your water smells like sulfur or rotten eggs, the reason is that your water has high Hydrogen Sulfide (H2S) content.

H2S is a gas that is released from the earth and finds its way into groundwater. It’s especially common in well water located near shale, sandstone, coal, peat, or oil.

(Occasionally, a rotten-egg smell in your water could also be caused by a water heater or by sewage pollution in your water. If you’re on city water, the most likely explanation is your water heater.)

H2S dissolves in water to create a weak acid that can corrode metal pipes

Negative Effects of H2S

In addition to potential health risks, having H2S in your water can cause all sorts of annoying problems. H2S in your water can:

  • Cause coffee and tea to be discolored and taste funny
  • Corrode metals (steel, copper, iron, brass), including silverware
  • Cause foods cooked with water to taste “off”
  • Create yellow or black stains in your bathroom and kitchen 

There's a Filter Built Specifically For This

There's a Filter Built Specifically For This

Hydrogen sulfide has a dedicated solution. Not a general-purpose carbon filter that helps for a while, but a system that uses aeration to address the gas at the point where water enters your home, certified against a standard written for exactly this.

That means a shower that smells like nothing. Coffee that tastes like coffee. Laundry without black specks. Water you can offer a guest without explaining.

Aquasential® Sulfur Water Filter

Tested and certified by WQA against NSF/ANSI Standard 42 for the effective reduction of hydrogen sulfide up to 500 gallons, plus NSF/ANSI 372. Indoor systems are also certified to CSA B483.1.

Aquasential® Iron Water Filter

If you have orange stains as well as the smell, this one covers both. Certified by WQA against NSF/ANSI Standard 42 for iron reduction, and it’s a two-in-one system addressing both iron and hydrogen sulfide. 

What our clients say

There’s a reason Mast Family Culligan is the best water treatment company in Southwest Florida with over 2,127 4.8-Stars Google Reviews.

Delivery was okey and in time !
We love our Culligan service! They always provid top notch service. A must for hard Florida water!! ✅👏⭐️⭐️⭐️⭐️⭐️
The service tech arrived on time with a smile on his face.He got to work guickly,and found no issues.Please send Mason on all my service calls,you have a gem on your hands..Thank Bruce & Jeannie
Great service Great People!!!
Matthew is the best.Helpful, friendly and very professional
Excellent service and kind attitude
Our service was on time and quickly executed by a friendly and skilled technician. We are pleased to recommend Culligan to anyone considering a water treatment service.
Great service and products. Abby, Dillon & Carlos were excellent!
Excellent service for the entire project from the first meeting through installation! Glad to have filtered water in my new home to help protect my faucets from harmful elements and to provide clean drinking water in the house. We had Culligan in our previous home and glad to have it installed again!! Thank you! Mary, Sanibel Island, FL
Mark does such a great job!!
The Matt family has taken care of us for years and done an exceptional job throughout those years
Knowledgeable staff who were easy to work with. Came on time. Overall a great experience
I absolutely love my Culligan water! Everyone who visits me and uses the shower, comments on the amazing water!! 💖
Culligan -Mast Family has always been great! Reliable and friendly!!
Did a nice job of installing the total home system. The water is delicious and most definitely noticeable vis-a-vis a Brita-like setup.
Our tech was thorough, knowledgeable, and professional!
Very professional and detailed,Thank you
I really appreciate all that Mast Family Culligan has done for me and my family. After a minor mix up, the dispatch manager reached out to me directly to address my concerns and resolve the issue. Thank you for the dedicated customer service.
Great water great experience with them delivering don’t have the household getting at the grocery store get delivered right to your porch. You don’t have to drag it around in your shopping cart while you’re shopping.
Great customer service very responsive
Amazing water company hands down professional and always help full
Our Tecnician was very courteous and professional
They are great. They delivered my waters asap. They answer all my questions.
They came at the time they were supposed to. They were very polite. They replaced the things that needed to be replaced and we discussed a preventive way to hope that it doesn't happen again from rain getting into the control panel, they're very polite and courteous and this is usually what I expect and they outdid theirselves
I am extremely happy with the service I receive from culligan, the drivers even place the water bottles inside my garage when able. Outstanding job
Jay change the filters on water system repaired water softener did a great job
Alex is always GREAT! Truly professional with great customer service!
We had our sink filter installed a year ago and have been very pleased with it over the past year. Had our annual service call today and filter change. At ever step they’ve been professionally, courteous and prompt.
Been with Mast Family Culligan for over 15 years. Their service has been nothing short of great. Their delivery drivers are top notch. Been more than 1 occasion where I forgot to put out my empty bottles and they’ve knocked on the door to see if I needed water, I always did. If you are looking for a reliable water service you can’t go wrong with Mast Family Culligan.
Great techs. Always cheerful and know what they are doing. I love my water osmosis unit under my sink.
I got Culligan filtration system installed back in February of 2026. It's been an amazing experience since. However; water stop flowing in my home on Saturday, August 22nd, 2026. The technician over the phone was helpful. We went through the process of turning on the bypass, which caused water to flow, but the smell was awful. Rick Velez, Technician came out on Monday, got everything running the way it should. Rick customer service skills was professional and very upbeat, which was very welcome.Thank you Culligan water 💧
I'm so elated about my system and the Platinum Program benefits. The Technician that comes by to take care of my equipment is Logan Haack, and I want to make sure I give him a massive shout out for being so thorough. This guy works so hard and is so competent in his job, AND so friendly and professional as well. He literally goes above and beyond to make sure my system is not only functioning effectively, but that I am aware of everything during the process and happy with the results. He's awesome.
Joe is a very good delivery guy excellent performance….
Culligan always have worked with excellence for my family and me for many years. This is a company that values customers and that employs outstanding people.
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Worlds most efficient NSF Certification | Mast Family Culligan UL Certified Company in Cape Coral, Fort Myers, Naples, Lehigh Acres, Bonita Springs Water Quality Association Tested and Certified Under Industry Standards

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