4 PCS 1/8" Male x 1/4" Female Test Cock with PTFE Sealant Tape
4.7Editor score
Durable brass construction
Ergonomic handle design
Includes PTFE tape
10 Best Backflow Preventer Test Kit (November 2026) Expert Guide
Choosing the right backflow preventer test kit is essential for maintaining safe water systems. These tools ensure compliance with health standards by verifying that backflow devices function correctly. A reliable kit helps professionals detect leaks and pressure issues efficiently.
We evaluated ten top-rated products based on durability, accuracy, and ease of use. Our analysis covers comprehensive kits, individual test cocks, and complete pressure vacuum breaker assemblies. Each option meets specific industry requirements for different irrigation and plumbing setups.
Each pick highlights key specifications and ideal use cases for various environments. Prices and availability change frequently, so always check current listings before purchasing. This guide provides the factual data needed to make an informed decision for your specific project needs.
Top 3 Picks for Best Backflow Preventer Test Kit
Watts TK-9A Series Portable Backflow Preventer Test Kit for RPZA and DCVA
4.8Editor score
Compact portable design
Includes gauge and hoses
Shock-resistant carrying case
Febco 765 Bronze Pressure Vacuum Breaker Backflow Preventer 1-1/2" Inlet
4.6Editor score
Lead-free bronze construction
Includes freeze sensor
Meets USC FCCCHR standards
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Top 10 Best Backflow Preventer Test Kit in 2026 Compared
This side-by-side comparison highlights the key specifications and features of each product to help you find the ideal solution for your backflow testing or prevention needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Watts TK-9A Series Kit
Portable design
175 psi max
Includes gauge
Shock-resistant case
4.8Editor score
Editor's Choice
4 PCS Test Cock Kit
Brass material
1/8 x 1/4 inch
Rust resistant
Includes tape
4.7Editor score
Best Premium
1" 720A Brass PVB
400 PSI rated
Heavy brass body
10-year warranty
Repair kit included
4.2Editor score
3/4 Inch Backflow Preventer
400 PSI max
Brass construction
Anti-siphon protection
Installer-friendly
4.5Editor score
Febco 765 Bronze 1.5"
Lead-free bronze
150 psi max
Freeze sensor
Potable water safe
4.6Editor score
Febco 765 Bronze 2"
Lead-free bronze
150 psi max
Freeze sensor
Industrial grade
4.6Editor score
2 Pack 3/4 Inch Preventer
400 PSI max
Two pack
Brass body
Anti-siphon
4.5Editor score
GASHER 3Pcs Test Cock
Solid brass
1/8 x 1/4 inch
Slotted screw
Includes tape
4.5Editor score
2 Pack 1 Inch Preventer
400 PSI max
Two pack
Brass body
Anti-siphon
4.5Editor score
1 Inch Preventer Repair Kit
Metal top cap
400 PSI max
Repair kit included
Brass body
4.5Editor score
1. Watts TK-9A Series Kit – Best Overall Kit
Watts TK-9A Series Portable Backflow Preventer Test Kit for RPZA and DCVA
Compact portable design
175 psi working
Includes gauge and hoses
Shock-resistant carrying case
The Watts TK-9A Series is a comprehensive backflow preventer test kit designed for professionals who need reliable and accurate testing tools. This kit includes everything required to test reduced pressure zone assemblies, double check valve assemblies, and vacuum breakers against USC and ASSE standards. Its compact design makes it easy to transport between job sites while maintaining high performance standards.
Pros
- Complete testing solution
- Lightweight and portable
- Accurate pressure readings
- Durable carrying case
Cons
- Higher price point
- Requires manual verification
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This testing device features a maximum working pressure of 175 psi, ensuring it can handle various system requirements without compromising accuracy. The kit includes a gauge, test valves, three hoses with female-threaded swivel couplings, and adapters for different connection types. The shock-resistant carrying case protects all components during transport, making it ideal for field use where durability is essential.
While the kit offers exceptional completeness and accuracy, it comes at a higher price point compared to basic testing accessories. Users must also ensure they follow the instruction guide carefully to avoid misinterpretation of test results. These trade-offs are acceptable given the professional-grade reliability and the comprehensive nature of the included components.
This kit is ideal for plumbing professionals and inspectors who require a dependable tool for routine backflow testing. Its design ensures that every drop counts by maintaining water safety standards effectively. For those seeking a complete solution that minimizes the need for additional accessories, this is a highly recommended choice.
Complete Testing Solution
Includes all necessary components for thorough backflow prevention testing without needing extra purchases.
Portable and Durable
Lightweight design with a shock-resistant case ensures safe transport to various field locations.
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2. 4 PCS Test Cock Kit – Best Budget Option
4 PCS 1/8" Male x 1/4" Female Test Cock with PTFE Sealant Tape
Durable brass construction
Ergonomic handle design
Includes PTFE tape
Rust and corrosion resistant
This four-piece test cock kit offers an affordable and reliable solution for maintaining backflow preventers equipped with specific threaded connections. Made from high-quality brass, these test cocks are designed to resist rust and corrosion in outdoor environments. The ergonomic handle allows for quick tightening and removal without the need for special tools, saving time during maintenance.
Pros
- Affordable price
- Easy hand tightening
- Includes sealing tape
- Rust resistant material
Cons
- Only for non-potable water
- Requires dimension verification
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Each cock features a 1/8-inch NPT male connection and a 1/4-inch female connection, meeting standard specifications for many irrigation systems. The kit includes a roll of PTFE tape to prevent leaks caused by aging threads or sealing defects. This ready-to-use setup ensures that users can install them immediately without additional accessories or complex procedures.
While these test cocks are excellent for non-potable water applications, they are not suitable for drinking water systems. Users must carefully verify the dimensions of their existing components to ensure perfect compatibility before purchasing. These limitations are reasonable given the cost-effective design and the specific use case targeted by the manufacturer.
This kit is perfect for homeowners or maintenance crews working on irrigation systems who need reliable test cocks. Its design emphasizes ease of use and durability in harsh outdoor conditions. For those looking for a budget-friendly way to replace aging test connections, this product provides significant value.
Easy Manual Installation
Ergonomic handles allow for quick tightening and removal by hand without wrenches.
Included Sealing Tape
Comes with PTFE tape to ensure leak-free threaded connections right out of the box.
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3. 1" 720A Brass PVB – Best Durability
1" 720A Brass Pressure Vacuum Breaker, Max 400PSI Sprinkler Backflow Preventer
400 PSI rated pressure
Heavy brass body
10-year warranty support
Free repair kit included
This 1-inch brass pressure vacuum breaker provides robust protection for non-potable irrigation and industrial water systems. It is built with auto-sensing technology to block polluted water backflow instantly, ensuring clean drinking water supply remains safe. The thickened heavy brass body resists rust, corrosion, and cracking even in freezing or rainy conditions.
Pros
- High pressure rating
- 10-year warranty
- Repair kit included
- Easy installation guide
Cons
- Disassembly breaks seal
- Limited to non-potable
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The unit supports up to 400 PSI high-flow pipes and comes with a complete repair kit to fix minor leaks or wear parts. Detailed installation guides help finish setup within minutes without special tools, thanks to engraved flow arrows that speed up assembly. The universal 1-inch size fits residential, commercial, and fire suppression pipelines effectively.
While the valve offers strong durability and warranty support, disassembly will break the PVB seal, which means repairs must be handled carefully. It is also strictly limited to non-potable water applications, so it cannot be used in drinking water supply lines. These constraints are acceptable for irrigation systems where high pressure resistance is critical.
This preventer is an excellent choice for commercial or industrial setups requiring high-pressure protection and long-term reliability. Its included repair kit simplifies maintenance, reducing the need for immediate replacement. For users prioritizing durability and warranty coverage in non-potable systems, this model stands out.
High Pressure Capability
Rated for up to 400 PSI, making it suitable for demanding industrial and fire lines.
Comprehensive Warranty Support
Offers a 10-year full warranty with free replacement for non-human damage issues.
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4. 3/4 Inch Preventer – Best for Lawns
3/4 Inch Backflow Preventer, Brass Pressure Vacuum Breaker Assembly
400 PSI maximum pressure
Thickened brass material
Anti-siphon protection
Installer-friendly design
This 3/4-inch backflow preventer is designed to stop back-siphonage by breaking vacuum conditions before irrigation water flows back toward the clean supply. Made from thickened brass, it offers corrosion resistance and outdoor durability for compatible lawn sprinkler systems. The compact body and clearly marked flow-direction arrow simplify setup and inspection.
Pros
- Stops back-siphonage
- Corrosion resistant
- Clear flow markings
- Compact body
Cons
- Not a repair kit
- Requires size confirmation
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The assembly is rated for a maximum pressure of 400 PSI, ensuring it can handle garden, lawn, and outdoor water line applications effectively. It functions as a sprinkler backflow valve and irrigation preventer for outdoor watering setups. A centerline test plug helps simplify routine maintenance without needing specialized tools.
While the unit is complete and reliable, it is not a repair kit or pressure regulator, meaning users should order the correct size upfront. Confirming the 3/4-inch connection size before ordering is crucial to avoid installation issues. These limitations are acceptable given the product's focus on providing reliable anti-siphon protection.
This preventer is ideal for homeowners managing lawn irrigation systems who need reliable back-siphon protection. Its design prioritizes ease of installation and long-term durability in outdoor environments. For those with 3/4-inch systems looking for a straightforward solution, this assembly is a strong fit.
Anti-Siphon Protection
Helps stop back-siphonage by breaking vacuum conditions effectively for clean water supply.
Installer-Friendly Design
Includes centerline test plug and flow arrows to simplify setup and inspection.
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5. Febco 765 Bronze 1.5" – Best Premium Assembly
Febco 765 Bronze Pressure Vacuum Breaker Backflow Preventer 1-1/2" Inlet
Lead-free bronze construction
Maximum 150 PSI
Freeze sensor included
Meets USC FCCCHR manual
The Febco 765 Bronze Pressure Vacuum Breaker provides ultimate mechanical protection of potable water against cross-connection contamination hazards. It is designed to protect against health and non-hazard back-siphonage of toxic or non-toxic liquids. The lead-free bronze construction ensures durability while meeting the specifications of the USC FCCCHR Manual.
Pros
- Potable water protection
- Freeze sensor included
- Minimum head loss design
- Health hazard protection
Cons
- Higher price
- Not for high-pressure
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This assembly includes a freeze sensor compatible with SentryPlus Alert technology, signaling facility personnel when temperatures near freezing. It is equipped with a plastic bonnet to protect from freeze damage and a spring-loaded check valve for reliable performance. The maximum working pressure is 150 psi, suitable for residential and commercial settings.
While this unit offers superior protection and freeze monitoring, it comes at a higher price point and is not designed for high-pressure systems. Users must verify their system pressure does not exceed 150 psi to avoid damage. These trade-offs are acceptable for those requiring certified potable water protection in sensitive environments.
This preventer is ideal for commercial facilities, industrial plants, and swimming pools needing certified water safety. Its freeze sensor adds a layer of security against environmental damage. For projects requiring strict compliance and freeze protection, this assembly is a top-tier choice.
Potable Water Safety
Provides ultimate mechanical protection of potable water against cross-connection contamination hazards.
Integrated Freeze Monitoring
Includes a freeze sensor compatible with SentryPlus Alert technology to prevent freezing damage.
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6. Febco 765 Bronze 2" – Best Industrial
Febco 765 Bronze Pressure Vacuum Breaker Backflow Preventer 2" Inlet
Lead-free bronze material
Maximum 150 PSI
Freeze sensor included
Continuous pressure capable
This Febco 765 Bronze assembly is ideal for health hazard continuous pressure applications in industrial plants, hospitals, and morgues. It offers the ultimate mechanical protection of potable water against cross-connection contamination hazards. The lead-free bronze construction ensures durability while meeting the specifications of the USC FCCCHR Manual for toxic liquid protection.
Pros
- Ideal for hospitals
- Chemical plant safe
- Minimum head loss
- Health hazard protection
Cons
- High cost
- Limited to 150 PSI
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Similar to the 1.5-inch version, this unit includes a freeze sensor compatible with SentryPlus Alert technology, signaling personnel when temperatures near freezing. It supports maximum working pressure of 150 psi and is used in irrigation systems, boiler feeds, and water lines where maximum protection is essential. The design minimizes head loss for efficient flow.
While the unit offers high-level protection, it is not suitable for systems exceeding 150 psi and comes at a significant cost. Users must confirm their application aligns with continuous pressure requirements to avoid performance issues. These constraints are acceptable for the critical nature of health and safety in industrial settings.
This preventer is best suited for commercial and industrial facilities that require strict adherence to health hazard standards. Its freeze sensor capability protects against environmental risks. For large-scale water services requiring maximum protection, this assembly is a reliable choice.
Industrial Safety Standards
Designed for health hazard continuous pressure applications in hospitals and chemical plants.
Continuous Protection
Ideal for water services to industrial plants, boiler feeds, and water lines needing maximum protection.
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7. 2 Pack 3/4 Inch – Best Multi-Use
2 Pack 3/4 Inch Backflow Preventer, Brass Pressure Vacuum Breaker Assembly
Two pack included
400 PSI rated
Brass construction
Anti-siphon protection
This two-pack of 3/4-inch backflow preventers helps stop back-siphonage by breaking vacuum conditions before irrigation water flows back toward the clean water supply. Made from thickened brass, they are corrosion resistant and durable for outdoor use. The compact body and clearly marked flow-direction arrow simplify setup and inspection.
Pros
- Two units for price
- Easy installation
- High pressure rating
- Compact body
Cons
- Not a repair kit
- Must verify connection
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Each assembly is rated for a maximum pressure of 400 PSI, ensuring it can handle garden, lawn, and outdoor water line applications effectively. A centerline test plug simplifies routine maintenance without specialized tools. The multi-pack provides flexibility for larger projects or backup replacements.
While the product offers great value with two units, it is not a repair kit or pressure regulator. Confirming the 3/4-inch connection size before ordering is crucial to avoid installation issues. These limitations are acceptable given the product's focus on providing reliable anti-siphon protection.
This preventer is ideal for contractors or homeowners managing multiple lawn irrigation systems. Its design prioritizes ease of installation and long-term durability in outdoor environments. For those needing multiple units, this provides significant value and consistency.
Multi-Pack Value
Provides two complete assemblies for covering multiple zones or having a spare ready.
Anti-Siphon Protection
Helps stop back-siphonage by breaking vacuum conditions effectively for clean water supply.
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8. GASHER 3Pcs Test Cock – Best for Testing
GASHER 3Pcs 1/8" MNPT x 1/4" FNPT Brass Backflow Test Cock Valve
High-strength solid brass
Slotted control screw
Includes PTFE tape
Precise thread sizing
This GASHER three-piece test cock kit is specifically engineered for lawn sprinkler backflow preventers and water pressure testing equipment. Constructed from high-strength solid brass, it offers superior corrosion resistance and high-temperature tolerance for outdoor environments. The standard 1/8-inch NPT male and 1/4-inch NPT female ensure seamless integration with compatible test gauge setups.
Pros
- Superior corrosion resistance
- Easy screw adjustment
- Leak-free installation
- Ready-to-install kit
Cons
- Not a full test kit
- Must verify compatibility
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Each cock features a top slotted brass control screw that can be easily turned using a flathead screwdriver. This allows for opening or shutting off flow during routine backflow testing and maintenance without specialized tools. The kit includes a roll of PTFE thread sealant tape to provide everything needed for a leak-free installation.
While these test cocks are essential for system diagnosis, they are not a complete test kit with gauges. Users must verify that existing test gauge setups match the thread sizing to avoid connection issues. These constraints are acceptable for focused maintenance tasks where specific valve replacement is needed.
This kit is perfect for plumbers or maintenance crews working on irrigation systems who need reliable test cocks. Its design emphasizes ease of use and durability in harsh outdoor conditions. For those looking for a budget-friendly way to replace aging test connections, this product provides significant value.
Easy Screw Adjustment
Features a slotted control screw for simple operation with a standard flathead screwdriver.
Leak-Free Installation
Comes with PTFE tape to ensure tight seals and prevent leaks during testing.
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9. 2 Pack 1 Inch – Best Large Pack
2 Pack 1 Inch Backflow Preventer, Brass Pressure Vacuum Breaker Assembly
Two units provided
400 PSI rated
Brass construction
Anti-siphon protection
This two-pack of 1-inch backflow preventers helps stop back-siphonage by breaking vacuum conditions before irrigation water flows back toward the clean water supply. Made from thickened brass, they offer corrosion resistance and outdoor durability for compatible lawn sprinkler systems. The compact body and clearly marked flow-direction arrow simplify setup and inspection.
Pros
- Multiple zones covered
- High pressure rating
- Installer-friendly
- Compact body
Cons
- Not a repair kit
- Must verify connection
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Each assembly is rated for a maximum pressure of 400 PSI, ensuring it can handle garden, lawn, and outdoor water line applications effectively. A centerline test plug helps simplify routine maintenance without specialized tools. The multi-pack provides flexibility for larger projects or backup replacements.
While the product offers great value with two units, it is not a repair kit or pressure regulator. Confirming the 1-inch connection size before ordering is crucial to avoid installation issues. These limitations are acceptable given the product's focus on providing reliable anti-siphon protection.
This preventer is ideal for contractors or homeowners managing multiple lawn irrigation systems. Its design prioritizes ease of installation and long-term durability in outdoor environments. For those needing multiple units, this pack provides significant value and consistency.
Multi-Pack Value
Provides two complete assemblies for covering multiple zones or having a spare ready.
Anti-Siphon Protection
Helps stop back-siphonage by breaking vacuum conditions effectively for clean water supply.
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10. 1 Inch Preventer with Repair Kit – Best Maintenance
1 Inch Backflow Preventer with Repair Kit, Brass Pressure Vacuum Breaker Assembly
Repair kit included
Metal top cap
400 PSI rated
Brass construction
This 1-inch backflow preventer helps prevent back-siphonage by breaking vacuum conditions before irrigation water flows back toward the clean water supply. Made from thickened brass, it offers durability and corrosion resistance with an upgraded metal top cap. The repair kit includes springs, O-rings, and washers to simplify future replacement of common wear parts.
Pros
- Simplifies maintenance
- Metal top cap
- Flow-direction marking
- High pressure rating
Cons
- Limited to 1 inch
- Not for drinking water
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The assembly is rated for a maximum working pressure of 400 PSI, ensuring it can handle compatible sprinkler and irrigation systems effectively. Flow-direction markings and accessible test ports support setup, inspection, and maintenance without specialized tools. It provides anti-siphon protection for outdoor water lines and garden setups.
While the unit offers excellent maintenance support, it is strictly limited to non-potable water applications. Users must verify the connection size before ordering to ensure compatibility with their system. These limitations are acceptable for irrigation systems where reliability and ease of repair are prioritized.
This preventer is ideal for homeowners or contractors managing lawn irrigation systems who need reliable back-siphon protection. Its design prioritizes ease of installation and long-term durability in outdoor environments. For those needing maintenance tools, this assembly is a strong fit.
Easy Maintenance Access
Includes springs, O-rings, and washers to simplify future replacement of common wear parts.
Anti-Siphon Protection
Helps prevent back-siphonage by breaking vacuum conditions effectively for clean water supply.
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Buying Guide – How to Choose the Best Backflow Preventer Test Kit
Choosing the right backflow preventer test kit requires careful evaluation of compatibility, durability, and features. This guide helps you identify the most important factors for your specific water system needs.
System Compatibility
Ensure the kit or preventer matches the connection size and type of your existing system. Always check if the threads and dimensions align with your current setup to avoid installation failures.
Verify dimensions carefully to ensure the product fits your specific irrigation or plumbing system requirements.
Material Quality
Look for durable materials like brass or bronze that resist rust, corrosion, and freezing. High-quality construction ensures longevity, especially for outdoor components exposed to harsh weather.
Choose brass or bronze materials for superior corrosion resistance and outdoor durability.
Pressure Rating
Check the maximum working pressure of the product to ensure it suits your system's requirements. Units rated for higher pressure provide more flexibility and safety for industrial or high-flow applications.
Confirm the product pressure rating meets or exceeds your system's operating pressure.
Testing Accuracy
For test kits, accuracy is critical. Select devices that include high-quality gauges and reliable valves to detect leaks and pressure issues effectively.
Prioritize kits with professional-grade gauges for accurate and reliable pressure readings.
Warranty and Support
Look for products that offer warranties or included repair kits to simplify long-term maintenance. Strong support ensures you can address wear and tear without additional costs.
Check for warranty terms or included repair kits to reduce future maintenance costs.
Installation Ease
Products with clear flow markings and ergonomic designs simplify setup. Tools that can be installed without specialized equipment save time and reduce the risk of errors.
Choose units with flow arrows and simple designs for tool-free installation.
Intended Use
Confirm whether the product is for potable or non-potable water. Using the wrong type can lead to safety issues and non-compliance with health standards.
Verify that the product is certified for your intended water type and use case.
How to Use and Care for Your Backflow Preventer Test Kit
Before testing, ensure all components are clean and compatible with your system. Connect the kit securely to the test ports, making sure all seals are tight to prevent leaks during pressure checks.
During operation, observe the gauge readings carefully to identify any pressure differentials. Use the provided valves to control flow and detect fouled check valves or other issues effectively.
After testing, clean all parts and store them in the provided case to maintain durability. Regular inspection and maintenance of your test kit ensure long-term accuracy and reliability.
Frequently Asked Questions
What is a backflow preventer test kit used for?
A backflow preventer test kit is used to verify that backflow prevention devices are functioning correctly and protecting clean water supplies. It helps detect leaks and pressure issues that visual inspections may miss.
Can I use these kits for drinking water?
Many test kits and preventers are designed for non-potable water only. Always check the product specifications to confirm if it is certified for potable water use.
How often should I test my backflow preventer?
Most health codes require annual testing of backflow prevention devices. Regular testing ensures compliance and helps maintain clean water supply safety.
What materials are best for test kits?
Brass and high-quality plastics are preferred for their durability and resistance to corrosion. These materials ensure the kit withstands frequent use and environmental exposure.
Do I need special tools to install a test cock?
Most modern test cocks feature ergonomic handles that allow for hand tightening without wrenches. However, you should always verify the connection type before installation.
What is the difference between PVB and RPZAs?
Pressure Vacuum Breakers (PVB) are typically for residential use, while Reduced Pressure Zone Assemblies (RPZAs) offer higher protection for commercial systems. Choose based on your application requirements.
Final Thoughts on Choosing the Best Backflow Preventer Test Kit
This guide compares ten top options, from professional test kits to durable backflow preventers. Each product offers unique features tailored to specific irrigation and plumbing needs.
Prioritize compatibility, durability, and pressure ratings when making your decision. A well-chosen kit ensures your system meets safety standards and operates efficiently.
Remember to check current availability and specifications before purchasing. Proper maintenance and testing will keep your water systems safe and compliant.