Read the Healthy Home Myth-Busting Series!
RV & Marine Maintenance Water Test Kit for detecting E. coli, coliform bacteria, and mold in fresh water systems
RV & Marine Maintenance Water Test Kit for detecting E. coli, coliform bacteria, and mold in fresh water systems
RV Water Test Kit for Bacteria, Mold, & Microbes
RV Water Test Kit for Bacteria, Mold, & Microbes
RV Water Test Kit for Bacteria, Mold, & Microbes
RV Water Test Kit for Bacteria, Mold, & Microbes
RV Water Test Kit for Bacteria, Mold, & Microbes
RV Water Test Kit for Bacteria, Mold, & Microbes

RV Water Test Kit for Bacteria, Mold, & Microbes

RV Water Test Kit for Bacteria, Mold, & Microbes

$27.99
$27.99
Also Available on Amazon!
View Detailed Guides & Instructions Videos

What do I test?

SEE INVISIBLE DANGERS: Detect the presence of bacteria, mold, and fungus that may linger in your RV or Marine freshwater system. Unlike many kits that offer a simple yes/no result, our test shows the amount of bacteria AND mold present—giving you a visual indicator of exposure risk.

Test for bacteria, mold, and fungus in your pool or hot tub water. Know species AND how bad the problem is, with semi-quantitative results.

The RV & Marine Maintenance Water Test Kit (for freshwater systems) is a DIY fresh water test kit that checks for E. coli, coliform bacteria, and mold in onboard water systems. Results in 5-minutes. It delivers lab-grade screening at home or on the road, with no lab submission required. Made in the USA, it gives you a practical way to verify water quality before drinking, cooking, showering, or filling tanks for a trip.

  • Tests fresh water systems for E. coli, coliform bacteria, and mold
  • Lab-grade DIY format for accurate results without sending samples to a lab
  • Built for RVs, boats, campers, and other stored or seasonal water systems
  • Useful after winterizing, de-winterizing, tank cleaning, or long periods of storage
  • Helps catch contamination issues early before they affect taste, odor, or safety

Compared to basic water strips that only check general conditions, this kit focuses on common microbial contamination concerns in mobile fresh water systems. That makes it especially useful for RV owners, boaters, and anyone dealing with tanks, hoses, pumps, and plumbing that sit unused between trips.

Use it when opening your RV for the season, after questionable marina hookups, after filling from campground spigots, or anytime your water has an unusual smell or you want extra peace of mind. If you want a straightforward way to screen fresh water without booking a lab test, this kit keeps the process simple and dependable.
RV & Marine Maintenance Water Test Kit for detecting E. coli, coliform bacteria, and mold in fresh water systems

RV Water Test Kit for Bacteria, Mold, & Microbes

$27.99
$27.99
Two Tests in One Cartridge
1.

Two Tests in One Cartridge

Detects both bacteria and mold growth with a single, easy-to-read cartridge—no lab required.

Swab, Dip, or Test the Air
2.

Swab, Dip, or Test the Air

Swab surfaces, dip in water samples, or test the air coming from vents, then wait as it grows!

Identify What’s Growing
3.

Identify What’s Growing

Visual guide to identify the microbial species and level of contamination. Know exactly what’s in your water.

Made in the USA
4.

Made in the USA

Trusted technology used by industry professionals, now formatted for in-home use. Based in Austin, TX.

See the growth

Before sampling

After 48-72 hours

Frequently Asked Questions

Testing RV water with this kit is straightforward. You collect a sample from your fresh water system, follow the included DIY testing steps, and read the results without sending anything to a lab. The kit is designed to detect three specific contamination concerns in RV and onboard water systems: E. coli, coliform bacteria, and mold. That makes it useful for checking water after storage, after sanitizing the tank, or before a trip. It is a strong fit for RV owners who want a fast at-home check before drinking, cooking, or brushing teeth with tank water. The main limitation is that it is targeted to biological contamination, so it is not the right choice if you need a broad chemical analysis for things like heavy metals or pesticides.
This kit detects E. coli, coliform bacteria, and mold in fresh water systems. Those are three of the most important contamination issues to check in stored water systems because they can indicate sanitation problems, tank contamination, or microbial growth inside lines and reservoirs. E. coli is a serious red flag for fecal contamination, coliform bacteria are a broader indicator of water quality and sanitation issues, and mold points to unwanted growth in damp system areas. This makes the test especially useful for RV owners, boat owners, and anyone reopening a seasonal fresh water system after downtime. It is a focused screening kit rather than a full water chemistry panel, so it is best used when your main concern is biological safety in onboard fresh water.
Yes, it is built as a lab-grade DIY water test for home use. That means the method is designed to give reliable screening results without requiring you to ship samples to a laboratory. The value here is that you can check for E. coli, coliform bacteria, and mold using a process made for non-lab users, while still relying on a testing approach intended for accuracy. This is especially helpful for RV travelers, liveaboard boaters, and seasonal users who need a practical way to verify water quality before using onboard water. The key tradeoff is that a home kit gives you fast, direct screening, but if you need regulatory documentation or a full certified lab report, a formal laboratory test would still be the better fit.
Yes, this test kit is made for marine fresh water systems as well as RV water systems. It is intended for checking stored onboard fresh water where contamination can develop from sitting water, warm conditions, tank residue, or underused plumbing lines. Because it detects E. coli, coliform bacteria, and mold, it covers common biological risks that matter in boats, sailboats, and other marine setups with freshwater tanks and faucets. It is most useful for boat owners commissioning a vessel for the season, troubleshooting musty water, or checking tank water before using it for drinking or food prep. It is not meant for testing seawater, ballast water, or fuel-related fluids, so it works best when used specifically on potable fresh water systems.
No, this kit does not require lab submission. It is a DIY test designed to give you results at home or on board, which saves time and avoids the delay of packaging and mailing samples. That is especially useful when you are preparing for a trip, reopening an RV, or checking a boat's fresh water system at the dock and want answers before using the water. Since it screens for E. coli, coliform bacteria, and mold, you can quickly identify whether your system needs cleaning, sanitizing, or further investigation. This is a good option for travelers, seasonal owners, and anyone who wants a practical maintenance check. If you need legally documented results for compliance or property records, a certified external lab would still be the more appropriate route.
You should test your water system before the first trip of the season, after long storage, after sanitizing the tank, and any time the water smells off or tastes unusual. Fresh water systems in RVs and boats often sit unused, which creates conditions where bacteria or mold can grow inside tanks, hoses, and plumbing lines. Because this kit checks for E. coli, coliform bacteria, and mold, it is especially helpful when you want to confirm whether a system is ready for drinking water use or whether further cleaning is needed. It is ideal for seasonal travelers, weekend boaters, and anyone using stored onboard water for cooking or brushing teeth. If your concern is only hard water, minerals, or chlorine taste, you would need a different kind of water test focused on chemistry rather than microbial contamination.
The RV & Marine Maintenance Water Test Kit is best for people who rely on onboard fresh water and want to verify that it is free from common biological contamination. That includes RV owners, van campers with water tanks, boat owners, liveaboards, and anyone maintaining a seasonal potable water system. It is particularly useful after winter storage, after tank cleaning, after filling from an unfamiliar source, or when there is concern about contamination in lines or reservoirs. The kit focuses on detecting E. coli, coliform bacteria, and mold, so it answers the questions most people have before drinking or using stored fresh water. It is less relevant for households looking for a complete municipal water quality profile with metals, pH, or chemical contaminants. In that case, a broader household water analysis would be more appropriate.
Yes, this is a smart choice for checking fresh water systems after storage or winterization. RV and marine tanks often sit unused for weeks or months, and stagnant water conditions can allow bacteria or mold to develop in tanks, lines, and fixtures. This kit specifically tests for E. coli, coliform bacteria, and mold, which are the key biological issues many owners want to rule out before using stored water again. It is especially helpful for seasonal RV users, boat owners launching for the season, and anyone recommissioning a fresh water system after downtime. One balanced point is that this test confirms microbial concerns, but it does not replace a full maintenance routine. If a system tests positive, the next step is usually sanitizing the tank and plumbing, then retesting before use.
The main difference is focus. This kit is designed specifically for RV and marine fresh water maintenance, with testing targeted to E. coli, coliform bacteria, and mold rather than a wide chemistry profile. A general drinking water test often checks a broader mix of parameters such as hardness, pH, chlorine, nitrates, lead, or other dissolved contaminants. For onboard systems, biological contamination is often the immediate concern because tanks and plumbing can sit unused and develop growth over time. That makes this test a practical fit for RV owners and boat owners who want to know whether stored water is microbiologically safe to use. If your question is about corrosion, mineral buildup, or long-term municipal water quality, a broader drinking water kit would provide more chemical detail than this maintenance-focused option.
Yes, this product is made in the USA. For many buyers, that matters because it signals a domestic manufacturing standard and gives added confidence when choosing a kit used to evaluate drinking water in an RV or boat. The test is also positioned as a lab-grade DIY kit, so it combines at-home convenience with a method intended for accurate results on three key contamination categories: E. coli, coliform bacteria, and mold. That makes it a practical option for RV owners, marine users, and seasonal travelers who want a dependable maintenance check without lab handling. Being made in the USA does not change what the kit tests for, so buyers should still choose it based on fit for purpose. It is best for biological screening of fresh water systems, not for a full-spectrum chemical water analysis.