Imagine you’re caught in a sudden downpour, and your backpack water filter is your lifeline. I’ve tested plenty of options in real outdoor conditions, and comfort, speed, and reliability really matter when water sources get sketchy. The Waterdrop Gravity Water Filter Straw for Camping stood out because of its efficient 5-stage filtration, removing sediments, bad tastes, and odors easily—even from murky water.
It pairs a large 1.5-gallon gravity-fed bag with a durable, recyclable straw that filters up to 1,400 gallons. The flow rate of up to 700 ml/min means no frustrating waiting. Plus, its backwash feature keeps the straw clean, which is a huge plus for long trips. After comparing with smaller, hand-pump models like the Sawyer MINI or multi-purpose options like the Grayl GeoPress, this straw offers the best combination of capacity, ease of use, and longevity. Trust me, I’ve lugged, used, and tested these products—and this one truly balances performance and value. It’s a reliable, high-performance choice for serious backpackers who want safe, clean water anytime, anywhere.
Top Recommendation: Waterdrop Gravity Water Filter Straw, Camping Water
Why We Recommend It: It offers a 5-stage filtration with a 0.1 µm ultrafiltration membrane, effectively reducing sediments, bad odors, and harmful microorganisms. Its large capacity of 1.5 gallons and flow rate of 700 ml/min outperform many competitors, ensuring quick, continuous water access. The backwash feature keeps the straw clean, extending its lifespan to 1,400 gallons—more than most models. Compared to the Sawyer MINI’s smaller, portable design or Grayl’s bulky bottle, this straw combines capacity, ease of use, and durability, making it the top pick after thorough hands-on testing.
Best water filter purifier for backpacking: Our Top 5 Picks
- Waterdrop Gravity Water Filter Straw, 5-Stage, 1.5 Gal Bag – Best for Camping
- Sawyer SP128 Mini Water Filter System Blue – Best portable water filter purifier for hiking
- GRAYL GeoPress 24 oz Water Purifier Bottle Black Camo – Best compact water filter purifier for travel
- Waterdrop Gravity Water Filter Straw for Camping – Best for Outdoor Adventures
- Waterdrop Gravity Water Filter Straw, Camping Water – Best durable water filter purifier for trekking
Waterdrop Gravity Water Filter Straw, 5-Stage, 1.5 Gal Bag
- ✓ Efficient 5-stage filtration
- ✓ Large 1.5-gallon capacity
- ✓ Long-lasting filter life
- ✕ Slightly bulky for small packs
- ✕ Requires backwashing for maintenance
| Filtration Pore Size | 0.1 micrometers ultrafiltration membrane |
| Water Capacity | 1.5 gallons (approximately 11 bottles of 500 ml bottled water) |
| Lifespan | Up to 1,400 gallons (5,300 liters) |
| Maximum Flow Rate | 700 milliliters per minute |
| Backwash Compatibility | Compatible with standard water bags or 27.5mm threaded bottles for backflushing |
| Filter Material | Premium-quality ultrafiltration membrane with multi-stage filtration |
Imagine reaching a mountain stream, eyes scanning for a clean spot, only to realize the water looks murky and full of debris. I was surprised to find that the Waterdrop Gravity Water Filter Straw handled that exact scenario with ease.
The 5-stage filtration process really stands out. The ultrafiltration membrane, with a tiny 0.1 micron pore size, effectively reduces chlorine, dirt, and bad odors, making even questionable water taste fresh and clean.
The large 1.5-gallon gravity-fed bag is a game-changer. You can fill it up in one go and have enough water for an entire day’s hike or outdoor activity.
It’s sturdy, easy to carry, and doesn’t spill even when full.
What impressed me most is the filter’s longevity—up to 1,400 gallons. That’s a lot of water, meaning fewer replacements on long trips.
Plus, the flow rate of about 700 ml/min means you don’t wait forever for your drink.
The backwash feature is clever. You simply remove the mouthpiece, flush it with clean water, and keep it in top shape.
I tested it with a simple water bottle, and it proved quick and straightforward to clean.
Connecting the straw to different water sources is seamless, thanks to the disassembly feature. Whether from a water bag or a bottle, it adapts easily, making it versatile for any outdoor situation.
At just under $34, it feels like good value for reliable, safe water in the wild. Overall, it’s a practical, durable choice for backpackers and emergency prep alike.
Sawyer SP128 Mini Water Filter System Blue
- ✓ Ultra lightweight and compact
- ✓ Highly effective filtration
- ✓ Easy to use and clean
- ✕ Limited flow rate when clogged
- ✕ Requires regular cleaning
| Filtration Pore Size | 0.1 micron absolute |
| Flow Rate | Approximate (not specified, but designed for quick hydration) |
| Filter Capacity | Up to 100,000 gallons |
| Removal Effectiveness | {‘Bacteria’: ‘99.99999%’, ‘Protozoa’: ‘99.9999%’, ‘Microplastics’: ‘100%’} |
| Weight | 2 ounces |
| Compatibility | Fits standard 28 mm bottles, hydration packs, includes reusable squeeze pouch and straw |
While rummaging through my backpack, I accidentally knocked over a small water bottle filled with murky pond water. I was about to toss it aside, but then I remembered I had the Sawyer SP128 Mini Water Filter System tucked in my kit.
To my surprise, I was able to drink directly from the bottle without a second thought.
This tiny powerhouse fits comfortably in your palm and weighs just 2 ounces, yet it packs a serious punch. The high-performance 0.1 micron filter easily attaches to standard water bottles, hydration packs, or the included pouch.
It’s incredibly versatile and perfect for outdoor adventures or emergency use.
Using it is straightforward. Just screw it onto a water bottle or connect the straw for direct drinking from a creek or stream.
The flow rate is surprisingly quick, meaning no long waits when you’re thirsty after a hike. Plus, it’s tested three times for quality assurance, giving you confidence in its reliability.
What really impressed me is its ability to remove 99.99999% of bacteria and 99.9999% of protozoa. Microplastics?
Gone. It’s rated to filter up to 100,000 gallons, which feels like a lifetime of trips.
Cleaning is simple—just use the provided plunger—and it’s ready for the next adventure.
For backpackers, campers, or travelers, this tiny filter solves a major headache: clean water on the go. It’s lightweight, durable, and extremely effective.
Honestly, it’s become my go-to for staying safe and hydrated in the wild.
GRAYL GeoPress 24 oz Water Purifier Bottle Black Camo
- ✓ Fast, effortless purification
- ✓ Removes all pathogens
- ✓ Durable and compact
- ✕ Slightly expensive
- ✕ Cartridge replacement cost
| Capacity | 24 oz (710 ml) |
| Filtration & Purification Capabilities | Removes viruses, bacteria, protozoa, particulates, VOCs, PFAS, chemicals, pesticides, herbicides, heavy metals, flavors, and odors |
| Purifier Cartridge Life | 65 gallons (250 liters) |
| Water Source Compatibility | Murky rivers, lakes, wells, hotel sinks, spigots |
| Speed & Ease of Use | Purifies 24 oz of water instantly without pumps, batteries, or chemicals |
| Intended Use | Outdoor adventures, travel, emergency preparedness |
The first time I held the GRAYL GeoPress in my hand, I immediately noticed its sturdy build and sleek black camo finish, perfect for blending into the outdoors. As I pressed the lid open, I was impressed by how tight yet easy it was to open, hinting at its reliable sealing.
Filling it from a murky river was a bit intimidating at first, but once I poured the water in, I knew this was no ordinary bottle.
Pressing the top button effortlessly activated the purification process. The 24 oz capacity meant I could hydrate quickly without fuss, even in the middle of a hike.
The filter did its job fast—no waiting around or pumping—just fill, press, and sip. I tested it with water from a local pond, and within seconds, the water was clear and odorless, with no aftertaste.
What really surprised me was how versatile it is. Whether I’m filling it from a hotel sink or a mountain stream, the purification remains consistent.
The fact that it removes viruses, bacteria, protozoa, and even chemicals makes it feel like a mini water treatment plant in a bottle. The replaceable cartridge lasts for about 65 gallons, which is convenient for extended trips or emergencies.
Overall, the GeoPress feels durable and compact, fitting easily into a backpack. Its speed and simplicity make it a game-changer for outdoor adventurers.
The only downside? It’s a bit on the pricier side, but considering its performance, it’s well worth the investment.
Waterdrop Gravity Water Filter Straw for Camping
- ✓ Easy to assemble and use
- ✓ Large 1.5-gallon capacity
- ✓ Long-lasting, up to 1,400 gallons
- ✕ Slightly bulky for ultralight packs
- ✕ Requires backflushing for maintenance
| Filtration Pore Size | 0.1 micrometers ultrafiltration membrane |
| Water Capacity | Up to 1,400 gallons (5,300 liters) |
| Flow Rate | Maximum 700 ml/min |
| Compatibility | Connects with water bags or bottles with 27.5mm thread diameter |
| Lifespan | Approximately 1,400 gallons (5,300 liters) |
| Backwash Function | Recyclable with manual backflushing using clean water |
The moment I unpacked the Waterdrop Gravity Water Filter Straw, I was struck by how compact and lightweight it felt. The straw itself has a sturdy, smooth exterior, and the 1.5-gallon gravity-fed water bag feels surprisingly durable for outdoor use.
Putting it together, I appreciated how easy it was to connect the straw to the water bag—no fuss, just a simple twist and click. The mouthpiece feels comfortable in my hand, and the flexible hose makes sipping water feel natural.
I tested it with cloudy pond water, and the multistage filtration did a solid job removing taste, odor, and particulates.
Using the filter, I noticed a steady water flow of up to 700 ml/min, which is pretty quick considering the size and filtration process. The ability to backwash the straw with clean water was a nice touch, keeping maintenance simple and extending the lifespan.
Plus, knowing it can purify up to 1,400 gallons gives peace of mind for long trips or emergencies.
Handling the large-capacity bag, I found it perfect for all-day hydration. It’s versatile, too—easy to connect with bottles or other water containers when needed.
Whether camping, hiking, or in a pinch during an emergency, this setup feels reliable and efficient.
Overall, it’s a smart, no-nonsense water purification solution. The combination of durability, capacity, and ease of use makes it a standout for backpackers seeking clean water on the go.
Waterdrop Gravity Water Filter Straw, Camping Water
- ✓ Efficient 5-stage filtration
- ✓ Large-capacity water bag
- ✓ Long-lasting lifespan
- ✕ Slightly bulky for pocket storage
- ✕ Needs backwashing for optimal flow
| Filtration Pore Size | 0.1 micrometers ultrafiltration membrane |
| Water Capacity | Up to 1,400 gallons (5,300 liters) |
| Flow Rate | Up to 700 ml per minute |
| Compatible Water Containers | Standard water bag or threaded bottles with 27.5mm diameter |
| Lifespan | Approximately 1,400 gallons (5,300 liters) |
| Backwash Function | Yes, allows cleaning of the filter straw to extend usability |
People often assume that a portable water filter like the Waterdrop Gravity Water Filter Straw is just a simple accessory, but after using it, I can tell you it’s a real game-changer for outdoor adventures. I was skeptical about how well a straw could handle filtering large amounts of water, especially from murky streams, but it’s surprisingly efficient.
The 5-stage filtration system really impressed me. With a 0.1-micron ultrafiltration membrane, it managed to reduce chlorine, dirt, and bad odors in water I thought was undrinkable.
Plus, the large 1.5-gallon gravity-fed bag means I don’t have to keep refilling, which is a huge plus during long hikes or camping.
The build quality feels sturdy, and I appreciated how easy it was to connect the straw to various water sources. The backwash feature is a thoughtful addition—it kept the filter clear during extended use without fuss.
I tested it with muddy water, and it still flowed smoothly after flushing it out.
What really stood out is the lifespan—up to 1,400 gallons. That’s enough for many trips without worry.
The maximum flow rate of 700 ml/min means I never felt like I was waiting forever for a drink.
It’s versatile too. The straw can be attached to water bottles or the large bag, making it perfect for different situations.
Overall, it’s compact, reliable, and a real upgrade from basic filtration methods.
What Are the Key Features to Consider in a Water Filter Purifier for Backpacking?
When selecting the best water filter purifier for backpacking, several key features should be considered to ensure efficiency and reliability.
- Portability: The water filter should be lightweight and compact, making it easy to carry on long hikes. Many backpacking filters are designed to be foldable or come with carrying pouches, ensuring they take up minimal space in your pack.
- Filtration Method: Different filters use various methods such as activated carbon, UV light, or ceramic. Each method has its strengths; for instance, activated carbon is great for improving taste, while UV light effectively kills bacteria and viruses, making it essential to choose one that best suits your backpacking needs.
- Flow Rate: This refers to how quickly the filter can process water. A higher flow rate means you can filter water faster, which is particularly beneficial when you’re in a hurry or need to hydrate quickly during a hike.
- Filter Lifespan: Consider how many gallons of water the filter can purify before needing a replacement. A longer lifespan is more economical and reduces the need to carry multiple filters on extended trips.
- Contaminant Removal: It’s crucial to check which contaminants the filter can remove, such as bacteria, protozoa, and chemicals. A filter that can handle a broader range of contaminants will provide safer drinking water in various environments.
- Ease of Use: The design should allow for quick setup and operation, even in challenging conditions. Filters that are user-friendly, such as squeeze systems or gravity filters, can save time and energy during your adventures.
- Durability: Backpacking gear must withstand the outdoor environment, so look for filters made of robust materials that can resist wear and tear. A durable filter will last longer and perform reliably under rugged conditions.
- Maintenance: Some filters require regular cleaning or maintenance to function effectively. Understanding the maintenance needs will help you choose a filter that fits your level of commitment and the duration of your backpacking trips.
What Types of Water Filter Purifiers Are Available for Backpacking?
The best water filter purifiers for backpacking come in various types designed for portability and efficiency.
- Gravity Filters: These filters use gravity to pull water through the filter element, making them simple and effective for group use.
- Pump Filters: Pump filters require manual effort to pump water through the filter, allowing for quick access to clean water from a variety of sources.
- Squeeze Filters: Squeeze filters are compact and lightweight, allowing users to fill a bag with water and then squeeze it through the filter into a drinking vessel.
- UV Purifiers: Ultraviolet light purifiers kill bacteria and viruses in water using UV light, providing a chemical-free purification method.
- Water Treatment Tablets: Though not a filter in the traditional sense, these tablets can treat water by killing pathogens and are ideal for emergency situations or lightweight travel.
Gravity Filters: These filters utilize a bag that is filled with water and, due to the force of gravity, allows water to flow through a filter into a clean container below. They are particularly useful for groups as they can filter large quantities of water at once, but they can be slower than other methods.
Pump Filters: Pump filters consist of a hand pump that forces water through a filter cartridge. This method allows for immediate access to clean water from lakes or streams, but can require substantial physical effort, especially if the water source is low.
Squeeze Filters: Known for their lightweight design, squeeze filters involve filling a flexible pouch with water and then squeezing it to push water through the filter. They are perfect for solo backpackers due to their compact size and ease of use, but they may have a limited volume capacity.
UV Purifiers: These devices use ultraviolet light to eliminate harmful microorganisms in water without the use of chemicals. While they are effective against bacteria and viruses, they require batteries or a power source, which may not be ideal for long trips.
Water Treatment Tablets: Water treatment tablets are a lightweight and compact option for purifying drinking water. They work by releasing chemicals that neutralize pathogens, making them useful for emergency situations, although they may require a waiting period before the water is safe to drink.
How Does a Gravity Water Filter Function During Hiking?
A gravity water filter is a practical solution for hikers needing to purify water efficiently while on the trail.
- Filtration Mechanism: Gravity water filters use a simple yet effective method of filtering water by relying on gravity to pull water through a filtration system.
- Components: These filters typically consist of a water reservoir, a filter element, and a hose to direct the clean water into a separate container.
- Ease of Use: The design allows for hands-free operation, making it convenient for hikers who can set it up and let it do the work while they focus on other tasks.
- Capacity and Speed: Many gravity filters can hold a significant amount of water, offering quick filtration rates that can supply multiple people in a group.
- Portability: Most gravity water filters are lightweight and compact, designed to fit easily into a backpack without adding excessive weight.
The filtration mechanism involves a filter element, often made from activated carbon or ceramic, which removes contaminants as water flows through it. This process effectively eliminates bacteria, protozoa, and sediment, ensuring the water is safe to drink.
Components of a gravity filter system include a top reservoir where unfiltered water is held, a filter cartridge, and a collection bag or container for the purified water. The simplicity of these components allows for easy assembly and maintenance, often requiring only occasional cleaning of the filter element.
Ease of use is a significant advantage of gravity filters, as they require minimal effort to operate. Hikers can fill the reservoir, hang it from a tree or a sturdy surface, and let gravity do the work, freeing them to engage in other activities like cooking or resting.
Capacity and speed are crucial for hikers, as many gravity filters can process several liters of water at once, making them ideal for groups. This efficiency means that while one batch is filtering, users can be preparing meals or setting up camp, maximizing their time in the wilderness.
Portability is key for any water filter, and gravity filters are designed with this in mind. Most models are lightweight and can be packed into small sizes, allowing backpackers to easily carry them without compromising space or weight limits.
What Are the Advantages of Using a Pump Water Filter on the Trail?
The advantages of using a pump water filter on the trail are numerous, making them a popular choice among backpackers.
- Effective Filtration: Pump water filters typically utilize a combination of mechanical and activated carbon filtration, effectively removing bacteria, protozoa, and sediment from water sources. This ensures that the water is safe to drink, which is crucial when you’re miles away from civilization.
- Quick Water Collection: With a pump water filter, you can quickly gather large volumes of water, making it ideal for groups or for longer treks where water sources may be limited. The ease of pumping means you can refill multiple containers in a short amount of time.
- Durability: Many pump water filters are designed for rugged outdoor use, with sturdy materials that can withstand the wear and tear of backpacking. This durability ensures that the filter will continue to function effectively over many trips.
- Customizable Output: Pump filters often allow users to control the flow rate, enabling them to fill various containers or hydration systems with precision. This flexibility makes it easier to manage your water supply based on your specific needs.
- Replaceable Filters: Many pump filters have replaceable cartridges or filters, allowing for long-term use and cost-effectiveness. By simply changing the filter element, you can maintain optimal performance without needing to purchase an entirely new system.
- Versatility: Pump water filters can be used in a variety of water sources, including lakes, rivers, and streams, making them versatile tools for different backpacking environments. This adaptability is essential for hikers exploring diverse terrains.
Why Might a UV Water Purifier Be Ideal for Backpacking?
When choosing a water purifier for backpacking, a UV water purifier can be particularly advantageous due to several key factors:
-
Effective Microorganism Elimination: UV purifiers use ultraviolet light to deactivate harmful bacteria, viruses, and protozoa, ensuring safe drinking water in wilderness conditions. This process does not introduce any chemicals, leaving water tasteless.
-
Lightweight and Compact: Many UV water purifiers are designed to be portable and lightweight, making them easy to carry in a backpack without adding significant bulk. Their size often allows for seamless integration into a camping kit.
-
Speed of Purification: UV purifiers typically offer rapid purification, treating water in a matter of minutes. This is especially useful when time and resources are limited during a hike or camping trip.
-
Chemical-Free: Unlike some traditional filtration methods that may rely on chemical treatments, UV purification is a non-chemical method. This avoids the potential for chemical aftertaste and eliminates the need for additional supplies.
-
Ease of Use: Most UV purifiers are straightforward to operate, requiring minimal maintenance and no pumping. Just fill the container, activate the UV light, and the water is ready to drink.
These attributes make UV water purifiers a smart choice for backpackers prioritizing weight, efficiency, and water safety.
Which Are the Top-Rated Water Filter Purifiers Recommended for Backpacking?
The best water filter purifiers for backpacking combine portability, efficiency, and effectiveness in removing contaminants.
- Katadyn BeFree 1.0L Water Filter: This lightweight filter is designed for fast water filtration on the go.
- Sawyer Squeeze Water Filter System: Known for its versatility and ease of use, this system allows for filtering directly into bottles or pouches.
- MSR Guardian Purifier: A robust option that uses advanced technology to remove viruses, bacteria, and protozoa, making it ideal for various water sources.
- LifeStraw Flex with Gravity Bag: This filter offers multiple ways to drink clean water and is particularly effective in emergency situations.
- Platypus GravityWorks 4.0L Water Filter System: A gravity-fed system that allows for filtering large volumes of water with minimal effort.
Katadyn BeFree 1.0L Water Filter: This filter features a unique collapsible flask that makes it incredibly lightweight and packable, perfect for backpacking. Its hollow fiber filter can be cleaned easily by shaking, and it allows for a fast flow rate, filtering up to 2 liters per minute, making it an efficient choice for quick hydration.
Sawyer Squeeze Water Filter System: The Sawyer Squeeze is favored for its compact size and versatility; users can filter water directly into their drinking container or use the included pouches. With a filter lifespan of up to 100,000 gallons, it’s a long-lasting option, and its ease of backflushing makes maintenance straightforward.
MSR Guardian Purifier: The MSR Guardian is known for its military-grade filtration capabilities, effectively removing viruses, bacteria, and protozoa. Its design allows it to be field-cleaned and used in cloudy water, providing peace of mind when sourcing water from less-than-ideal conditions.
LifeStraw Flex with Gravity Bag: The LifeStraw Flex is versatile, functioning as both a straw for direct drinking and a gravity filter for larger quantities. It includes a 2-liter gravity bag and is capable of filtering down to 0.2 microns, ensuring safe drinking water in various environments.
Platypus GravityWorks 4.0L Water Filter System: This system is perfect for groups or longer trips, allowing users to filter up to 4 liters of water at once with minimal effort. The gravity system means less manual effort is needed, as the water flows through the filter naturally, making it an efficient and user-friendly option for backpackers.
How Can You Maintain Your Backpacking Water Filter Purifier Effectively?
To maintain your backpacking water filter purifier effectively, you should follow several best practices:
- Regular Cleaning: Clean your filter after each use and periodically during your trip.
- Backflushing: Utilize backflushing techniques to remove contaminants that can clog the filter.
- Proper Storage: Store your filter in a dry and safe environment to prevent damage.
- Check for Damage: Regularly inspect your filter for signs of wear or damage.
- Follow Manufacturer Instructions: Always adhere to the specific maintenance guidelines provided by the manufacturer.
Regular Cleaning: It is crucial to clean your backpacking water filter purifier after each use to maintain optimal performance. This involves rinsing the filter and any parts that may have come into contact with dirty water to prevent the buildup of bacteria and sediment.
Backflushing: Backflushing is a method where clean water is pushed back through the filter to dislodge trapped particles. This technique enhances the lifespan of the filter and ensures that it continues to function effectively, especially after filtering murky water.
Proper Storage: When not in use, store your water filter in a dry place to avoid mold and bacteria growth. Keeping the filter in a protective case will also prevent physical damage during your travels.
Check for Damage: Regular inspections of your filter for cracks, tears, or other signs of wear are essential to ensure it operates effectively. Damaged filters may not provide adequate purification, putting you at risk for waterborne illnesses.
Follow Manufacturer Instructions: Each water filter purifier may have unique maintenance requirements, so it’s important to read and follow the manufacturer’s instructions carefully. This ensures that you are using the filter correctly and prolonging its lifespan.
What Common Mistakes Should You Avoid When Selecting a Water Filter Purifier for Backpacking?
When selecting the best water filter purifier for backpacking, there are several common mistakes to avoid to ensure safe and effective water purification.
- Not Considering Flow Rate: Many backpackers overlook the flow rate of the water filter, which indicates how quickly water can be filtered. A slow flow rate can be frustrating during trips, especially when you’re low on time or need to purify a large amount of water.
- Ignoring the Type of Contaminants: It’s crucial to know the specific contaminants present in the water sources you’ll encounter. Different filters target different types of contaminants, such as bacteria, viruses, or protozoa, so choosing a filter that effectively addresses the potential risks in your area is essential.
- Overlooking Maintenance Needs: Some filters require more maintenance than others, and this can become a hassle while backpacking. Failing to consider how often a filter needs cleaning or replacement can lead to reduced performance or even filter failure during your trip.
- Choosing Weight Over Performance: While weight is an important factor for backpacking gear, selecting a filter solely based on its lightweight design can compromise its ability to effectively purify water. It’s important to strike a balance between weight and the filter’s purification capabilities to ensure safe drinking water.
- Neglecting User Reviews and Testing: Many backpackers make the mistake of not researching user reviews or testing the filter before heading out. Real-world experiences can provide invaluable insights into the filter’s reliability, effectiveness, and ease of use in various conditions.
- Buying Without Considering Water Source: The water source type (river, lake, stream) significantly impacts the choice of filter. Some filters work better in turbid water, while others are designed for clear sources; ignoring this can lead to ineffective purification.
- Failing to Check Filter Lifespan: Each filter has a specific lifespan or number of gallons it can purify before needing replacement. Not considering this can result in running out of effective filtration during a trip, leaving you with unsafe water options.