Picture this: You’ve finally finished your basement bar—custom walnut countertop, backlit shelving for your whiskey collection, the perfect bar stools. But when you drop a few cloudy, fast-melting ice cubes into a premium old fashioned, something feels off. That’s where gravity-drain clear ice machines come into play, transforming your subterranean sipping sanctuary from amateur hour into a professional-grade experience. Unlike standard freezer ice, clear ice is denser, melts slower, and won’t adulterate the flavor of meticulously crafted cocktails. And when your bar lives below grade, gravity drainage becomes a critical consideration that impacts everything from installation complexity to long-term reliability.
This guide cuts through the noise to deliver exactly what you need to know about selecting, installing, and maintaining a gravity-drain clear ice machine specifically for basement environments. We’ll unpack the physics of clear ice production, dissect drainage logistics unique to below-grade spaces, and arm you with the knowledge to make a confident investment that elevates your home bar for years to come.
Top 10 Gravity-Drain Clear Ice Machines for Basement Bars
Detailed Product Reviews
1. Maxx Ice MIM50P 65Lb Premium Clear Ice Cube Maker Machine with Drain Pump Blue LED and Built-in Undercounter or Freestanding Household Residential or Commercial Use, 15 Inch Wide, Silver
Overview: The Maxx Ice MIM50P is a premium clear ice maker designed for discerning homeowners and light commercial applications. Producing 65 pounds of restaurant-quality slab ice daily with 25 pounds of storage, this 15-inch unit fits seamlessly under counters or stands alone. The clear ice cubes measure 3/4" x 3/4" x 1" and are free from impurities, elevating any beverage experience.
What Makes It Stand Out: This machine’s dual residential/commercial approvals set it apart, meeting stringent standards for both home kitchens and small businesses. The built-in drain pump offers installation flexibility, while the striking blue LED interior lighting adds a touch of sophistication. The reversible stainless steel door accommodates any layout, and the integrated scoop holder keeps accessories organized. Front-breathing design and 33.5-inch height ensure proper undercounter ventilation.
Value for Money: At $1,278, the MIM50P sits in the mid-premium range. While not inexpensive, its commercial-grade components and dual approvals justify the investment compared to residential-only units. The included drain pump ($150+ value) and durable construction suggest long-term reliability, making it more economical than replacing cheaper models every few years.
Strengths and Weaknesses: Strengths include high-quality clear ice production, flexible installation options, commercial certifications, and elegant design. The built-in pump eliminates costly additions. Weaknesses include the premium price point, the need for professional plumbing, and the fact that it’s not a freezer—ice will slowly melt. The slab-style cubes require manual separation.
Bottom Line: Ideal for homeowners wanting commercial-quality ice and small cafés or offices, the Maxx Ice MIM50P delivers exceptional performance and versatility. If budget allows and you value premium clear ice with flexible installation, this reliable unit deserves serious consideration.
2. EdgeStar IB450SSP 50 lb. 15 Inch Wide Undercounter Clear Ice Maker with Drain Pump
Overview: The EdgeStar IB450SSP is a robust undercounter clear ice maker built for serious ice demands. Producing up to 50 pounds of restaurant-quality cubed ice daily with 25 pounds of insulated storage, this 15-inch wide unit suits both built-in and freestanding applications. The commercial-grade stainless steel door and computerized controls signal professional-grade performance for residential or light commercial use.
What Makes It Stand Out: EdgeStar emphasizes user-friendly operation with computerized controls that simplify ice production management. The reversible door and adjustable leveling legs accommodate challenging installations, while the included internal drain pump provides flexibility for locations without floor drains. The unit produces clear ice in sheets that break apart into individual cubes, ensuring crystal-clear results free from impurities and perfect for premium beverages.
Value for Money: Priced at $1,489, this unit commands a premium but delivers commercial-grade construction. While production is lower than some competitors at 50 pounds daily, the build quality and included drain pump add value. The recommendation for professional installation should be factored into total cost. It competes directly with Maxx Ice models but offers slightly less output for a higher price.
Strengths and Weaknesses: Strengths include durable stainless steel construction, flexible installation, included drain pump, and clear ice quality. The computerized controls offer precise operation. Weaknesses include lower production capacity relative to price, requirement for professional installation, and sheet-style ice requiring manual separation. The 4.5-foot drain hose limits placement options without extensions.
Bottom Line: The EdgeStar IB450SSP suits buyers prioritizing build quality and brand reputation over maximum output. For residential wet bars or small office break rooms needing reliable clear ice, it’s a solid investment. However, value-conscious shoppers might find better capacity-per-dollar elsewhere.
3. EUHOMY Commercial Ice Maker Machine, 100lbs/24H Stainless Steel Under Counter ice Machine with 33lbs Ice Storage Capacity, Freestanding Ice Maker.
Overview: The EUHOMY Commercial Ice Maker offers impressive capacity at an accessible price point, producing 100 pounds of ice daily with 33 pounds of storage capacity. This stainless steel undercounter unit targets both home and commercial users seeking high output without premium pricing. At just $329.99, it dramatically undercuts competitors while delivering ETL certification for commercial use.
What Makes It Stand Out: The exceptional production-to-price ratio immediately distinguishes this model. The intelligent LCD control panel displays ambient temperature and allows cube size adjustment through timing modifications. Automatic overflow prevention eliminates mess concerns, while the energy-efficient compressor operates quietly. The commercial ETL certification enables legitimate business use, rare at this price point.
Value for Money: This category leader in value delivers triple the ice production of some premium models at one-quarter the cost. The $329.99 price includes features typically found in $800+ units. While it uses gravity drainage instead of a pump, the savings more than cover professional installation if needed. For budget-conscious buyers or startups, it’s nearly unbeatable.
Strengths and Weaknesses: Strengths include massive 100-pound daily output, huge 33-pound storage, commercial certification, intuitive controls, and whisper-quiet operation. The price is exceptional. Weaknesses include gravity drainage requiring floor drain proximity, less sophisticated ice clarity compared to premium clear ice makers, and potentially shorter lifespan than commercial-grade units. Requires 24-hour upright settling before use.
Bottom Line: Perfect for high-volume home entertaining, small restaurants, or food trucks, the EUHOMY delivers extraordinary value. If you need maximum ice production on a minimal budget and have proper drainage, this feature-packed workhorse outperforms its price class. Don’t let the low cost fool you—this is a serious ice machine.
4. Maxx Ice MIM50P-O Indoor Outdoor Energy Star Built-in Under Counter Clear Ice Maker Machine with Drain Pump Reversible Door 65 Pound Production and 25 Pound Storage Capacity, 14.6" Wide, Silver
Overview: The Maxx Ice MIM50P-O is the outdoor-rated sibling of the MIM50P, engineered for patios, outdoor kitchens, and demanding environments. Producing 65 pounds of clear slab ice daily with 25 pounds of storage, this 14.6-inch unit withstands ambient temperatures from 50-90°F. The Energy Star certification and commercial approvals make it uniquely versatile for indoor/outdoor residential and commercial applications.
What Makes It Stand Out: This is among the few ice makers certified for outdoor use, featuring extra-thick insulation and an oversized refrigeration system to maintain performance in extreme conditions. The Energy Star rating ensures efficiency, while the included drain pump, blue LED lighting, and reversible stainless steel door provide installation flexibility. Automatic overflow prevention and a removable storage bin enhance convenience.
Value for Money: At $1,767, this premium unit commands the highest price but offers unique outdoor capability. For outdoor kitchen enthusiasts, the specialized construction justifies the $500 premium over the indoor model. Energy Star efficiency reduces operating costs, while UL and NSF commercial approvals ensure durability. It’s an investment in outdoor entertaining infrastructure.
Strengths and Weaknesses: Strengths include outdoor-rated construction, Energy Star efficiency, commercial certifications, flexible installation, and premium clear ice quality. The drain pump adds value. Weaknesses include premium pricing, moderate 65-pound production relative to cost, and the need for protected installation despite outdoor rating. The slab ice format requires manual separation.
Bottom Line: For outdoor kitchen aficionados and commercial patios, the MIM50P-O is essentially the only game in town. If you require reliable clear ice in variable outdoor conditions, the premium is justified. For indoor-only use, consider the standard MIM50P. This is a specialized tool for discerning outdoor entertainers who refuse to compromise on ice quality.
5. Upgraded Commercial Ice Maker Machine 130LBS/24H with 35LBS Storage Bin,15Inch Wide Ready in 11-20 Mins Under Counter/Freestanding Stainless Steel Gravity Drainage Large Ice Machine
Overview: This Upgraded Commercial Ice Maker positions itself as a high-capacity solution for demanding environments, producing an impressive 130 pounds of ice daily with 35 pounds of storage. The 15-inch wide stainless steel unit promises ice readiness in just 11-20 minutes, targeting both undercounter and freestanding installations. At $499, it bridges the gap between budget and premium models.
What Makes It Stand Out: The exceptional 130-pound daily output leads this category, surpassing even some units costing three times more. The rapid 11-20 minute ice production cycle ensures constant replenishment during peak demand. The generous 35-pound storage bin is class-leading, while gravity drainage simplifies maintenance. This unit focuses on raw production power for high-volume scenarios.
Value for Money: At $499, this unit delivers professional-grade capacity at a mid-range price. The production-to-cost ratio is outstanding, offering 30% more output than the EUHOMY for only 50% more cost. While lacking a drain pump and premium features like LED lighting, the core performance metrics justify the price for volume-focused buyers. It’s ideal for growing businesses needing scalable ice production.
Strengths and Weaknesses: Strengths include massive 130-pound production, large 35-pound storage, rapid ice cycles, stainless steel construction, and excellent capacity value. Weaknesses include gravity drainage limitations, unknown brand reputation, potential noise from high-output compressor, and lack of premium features like clear ice specialization or pump drainage. May require more frequent cleaning at high output.
Bottom Line: For volume-driven users like busy restaurants, event venues, or large families, this upgraded model delivers unmatched production-per-dollar. If you prioritize quantity over boutique features and can manage gravity drainage, it’s a smart business investment. The rapid cycle time and huge capacity make it a workhorse that punches above its price class.
6. Newair 15" Undercounter Clear Ice Maker 80 lbs. Daily Ice | Self-Cleaning Function, Clear Ice Cube Machine | Built-in or Freestanding in Stainless Steel, LED Controls, Ice Thickness Controls
Overview: The Newair 15" Undercounter Clear Ice Maker delivers restaurant-quality ice production for serious home entertainers and small business owners. Producing 80 pounds of crystal-clear ice daily, this unit bridges the gap between residential convenience and commercial performance. Its versatile design allows both built-in and freestanding installation, making it adaptable to various kitchen or bar layouts while maintaining a professional aesthetic.
What Makes It Stand Out: FrozenFall technology sets this machine apart by creating ice in layers, eliminating trapped air bubbles and impurities that cloud standard ice. The customizable ice thickness control offers unprecedented versatility for different beverages—from delicate cocktails to robust iced coffee. The fingerprint-resistant stainless steel door maintains a pristine appearance in high-traffic areas, while the self-cleaning function eliminates the tedious maintenance that typically plagues ice makers.
Value for Money: At $1,399.99, this ice maker sits at the premium end of residential units but costs significantly less than commercial alternatives with similar output. For households spending $10-15 weekly on bagged ice, the machine pays for itself in under two years. The energy-efficient operation and durable construction justify the initial investment for frequent entertainers or home bar enthusiasts who value convenience and quality.
Strengths and Weaknesses: Strengths include exceptional ice clarity, massive daily output, flexible installation options, low-maintenance operation, and professional-grade build quality. Weaknesses involve the substantial upfront cost, requirement for professional plumbing installation, considerable space requirements, and potential noise levels comparable to a dishwasher during operation.
Bottom Line: This Newair ice maker is an excellent investment for serious entertainers, home bartenders, or small office settings where ice quality and quantity matter. While the price and installation requirements demand commitment, the performance and convenience deliver genuine value. If you regularly host gatherings or run a small hospitality business, this machine will elevate your service and eliminate last-minute ice runs.
Why Clear Ice Matters for Your Basement Bar Experience
Clear ice isn’t just a visual flex for your Instagram-worthy cocktails—it’s a fundamental upgrade to drink quality. The directional freezing process eliminates trapped air bubbles and impurities, creating crystal-clear blocks that melt up to five times slower than conventional ice. In a basement bar where you’re likely serving spirit-forward drinks, slow dilution isn’t a luxury; it’s essential for preserving the integrity of a $150 bottle of single malt. Cloudy ice fractures more easily, increasing surface area and accelerating melt. Clear ice delivers a consistent chill without turning your carefully balanced Manhattan into watered-down regret. For basement bars, which often double as entertainment hubs for extended gatherings, this consistency means your last guest enjoys the same perfect cocktail as your first.
Understanding Gravity Drain Systems vs. Drain Pump Models
Gravity-drain systems rely on simple physics: water flows downhill through a drain line connected to your home’s wastewater system. This passive approach means fewer moving parts, quieter operation, and virtually no risk of pump failure. The catch? Your ice machine must be positioned above the drain point, typically requiring a minimum vertical drop of 1-2 inches per foot of horizontal run.
Drain pump models, conversely, actively push wastewater upward to reach a drain, offering flexible placement but introducing mechanical complexity. For basement bars, gravity systems are generally superior—if you can make the elevation work—because basements are prone to humidity and pump failures can go unnoticed until you have a minor flood on your hands. The reliability factor alone makes gravity drainage worth the extra planning.
Basement-Specific Installation Challenges
Elevation and Drain Location
Basements present unique drainage hurdles. Your main waste stack might be 8-10 feet overhead, and floor drains aren’t always conveniently located. You’ll need to map a drain path that maintains consistent downward slope. Sometimes this means installing a dedicated sink drain line or tying into a nearby laundry room utility sink. The key is measuring twice and cutting once—literally. Even a slight upward belly in the drain line will cause chronic backups.
Concrete and Structural Limitations
Drilling through concrete to run drain lines requires a core drill and professional expertise. Many DIYers underestimate this step. You’ll need to consider rebar location, potential structural impacts, and proper sealing to prevent radon or moisture intrusion. Sometimes the smarter play is running lines along walls using decorative conduit or building a false wall to conceal plumbing.
Key Features to Evaluate Before Buying
Production Capacity vs. Storage Capacity
Manufacturers list two numbers: how much ice the machine produces in 24 hours, and how much the bin holds. For basement bars hosting weekly poker nights, a 50-pound daily production rate with 25-pound storage might suffice. But if you’re throwing monthly parties for 30+ people, you’ll want 80+ pounds daily production. Remember, storage capacity dictates your immediate availability, while production rate determines how quickly you recover.
Ice Shape and Size Options
Clear ice machines typically produce gourmet cubes, top-hat shapes, or full cubes. Gourmet cubes melt slowest and look stunning in lowball glasses. Top-hat shapes fit better in highball glasses but sacrifice some density. Some machines offer adjustable thickness settings—worth considering if you serve varied cocktails. Thicker cubes mean slower melt but less production per cycle.
Build Quality and Components
Inspect the evaporator plate material (nickel-plated copper is industry standard), the robustness of the water distribution system, and whether the unit uses a gravity-fed or pressurized water system. Stainless steel exteriors resist basement humidity better than plastic, and hinged front panels make maintenance far less painful in tight spaces.
Sizing and Capacity Considerations
Before falling in love with any model, measure your space meticulously. Clear ice machines need clearance for ventilation—typically 3-6 inches on sides and back. In basement bars where ceiling height might be limited, check the unit’s total height including legs. Don’t forget to account for the drain line’s exit path; a machine that fits perfectly but can’t drain is just an expensive paperweight.
Consider your peak usage scenario. A good rule of thumb: estimate 1.5 pounds of ice per person for a three-hour event. If you regularly host 15 people, that’s 22.5 pounds needed. Since machines produce ice continuously, you don’t need to store the full amount, but your storage bin should hold at least 50% of your peak demand to avoid running dry mid-party.
Water Supply and Filtration Essentials
Water Line Requirements
Most clear ice machines need a 1/4-inch copper or PEX water line with a dedicated shut-off valve. Basement runs often require longer lines, increasing the risk of pressure drop. Test your water pressure—most units need 20-80 PSI. If you’re marginal, consider a booster pump. Insulate water lines running through cold basement areas to prevent freezing in winter.
Filtration Systems
Your ice is only as good as your water. A multi-stage filtration system—sediment filter, carbon block, and potentially a scale inhibitor—is non-negotiable for clear ice. Basement plumbing often has more sediment due to older pipes. Scale buildup from hard water will cloud ice and damage the machine. Budget for filter changes every 6-12 months; set a calendar reminder.
Electrical Requirements and Safety
Clear ice machines are power-hungry, typically requiring a dedicated 15-amp circuit. In older basements, electrical panels might be maxed out. Have an electrician assess your load capacity before purchase. Ground fault protection is mandatory near water sources—your basement bar qualifies. Install a GFCI outlet or breaker, and consider an auxiliary drip tray with a moisture alarm for early leak detection.
Voltage matters too. Most residential units are 115V, but some high-capacity models need 208-230V. Changing your electrical service post-purchase is a costly surprise you want to avoid.
Noise Levels and Acoustic Planning
Ice machines cycle through freezing and harvest modes, creating noise from compressors, fans, and water valves. In an enclosed basement, sound reverberates. Check the decibel rating—anything under 50 dB is whisper-quiet. Over 55 dB becomes noticeable during conversation. Mount the unit on anti-vibration pads and consider acoustic panels on surrounding walls. Some installers build insulated cabinets around machines, but ensure adequate ventilation or you’ll void the warranty and cause overheating.
Ventilation and Humidity Control
Basements are naturally humid, and ice machines reject heat and moisture into the surrounding air. Poor ventilation leads to condensation, mold, and reduced efficiency. Your machine needs a steady supply of cool air and a path for hot air exhaust. If your basement bar lacks HVAC vents, install a small exhaust fan cycling air to an adjacent utility room. Maintain ambient temperature between 50-80°F—below 50°F, production drops; above 80°F, the unit works overtime.
Consider a dehumidifier dedicated to the bar area. Aim for 40-50% relative humidity. Not only does this protect your ice machine, but it also preserves your whiskey labels and prevents that damp basement smell from invading your cocktail experience.
Maintenance and Cleaning Protocols
Daily and Weekly Tasks
Empty and clean the ice bin weekly with a food-safe sanitizer. Wipe down door gaskets to prevent mold. Check the drain line for slow flow—basement debris can clog lines faster than kitchen installations.
Deep Cleaning and Descaling
Every 6 months, run a manufacturer-approved cleaner through the system to remove mineral scale. In hard water areas, do this quarterly. The cleaning cycle takes 2-4 hours, so plan around your entertainment schedule. Inspect the evaporator plate for scale buildup—if you see white deposits, you’re already overdue.
Professional Servicing
Annual professional inspection pays for itself. Technicians check refrigerant levels, clean internal components, and catch failing parts before they die during your Super Bowl party. In basements, they’ll also verify drain line integrity and look for early corrosion signs.
Cost Analysis and Budget Planning
The machine itself is just the beginning. A quality gravity-drain clear ice machine runs $1,500-$3,500. Installation costs in basements often exceed $1,000 due to plumbing and electrical work. Add $300-500 for filtration systems, $200 for professional installation of water and drain lines, and $150 for electrical upgrades. Annual operating costs include filters ($100), cleaning supplies ($50), and increased electricity ($100-200). Budget for a 10-year lifespan; cheaper units might save $500 upfront but fail in 3-4 years.
Installation: DIY vs. Professional
When DIY Makes Sense
If you have plumbing experience, your basement has easy access to existing water and drain lines, and you’re comfortable with basic electrical work, a DIY install can save 40-60% of costs. Gravity-drain systems are simpler than pump models, but the basement’s below-grade nature introduces complexity.
When to Call a Pro
Any concrete drilling, electrical panel work, or running lines through finished ceilings warrants professional help. Pros understand local code requirements for air gaps, backflow prevention, and venting. They’ll also warranty their work—important when a leak could ruin your finished basement. Get three quotes and ask specifically about basement ice machine experience.
Troubleshooting Common Gravity Drain Issues
Slow or Incomplete Draining
This usually indicates a slope problem or partial clog. Check the entire drain line with a level—no upward pitches allowed. Flush the line with hot water and vinegar. In basements, tree roots can infiltrate old clay sewer lines, causing intermittent backups. A camera inspection might be necessary.
Ice Quality Degradation
If ice becomes cloudy or production slows, check water pressure and filter status first. Basements with well water often have fluctuating pressure. Also inspect the evaporator plate for scale. Sometimes the issue is ambient temperature—if your basement drops below 50°F overnight, the machine struggles to cycle properly.
Condensation and Sweating
Excessive sweating on the machine’s exterior points to high humidity or poor door seals. Replace gaskets if they’re cracked. Improve ventilation and consider a dehumidifier. In extreme cases, add insulation around the bin interior (without blocking airflow).
Maximizing Ice Quality and Longevity
Pre-Chilling Your Glassware
Storing glasses in a basement bar fridge? Pre-chill them. Warm glasses shock ice, causing micro-fractures that accelerate melting. This simple step makes your clear ice last 20-30% longer.
Proper Ice Handling
Use a stainless steel ice scoop, never glass. Store the scoop outside the bin to avoid contamination. Transfer ice to an insulated bucket for service rather than leaving the bin open. Every time you open the door, warm basement air rushes in, partially melting the ice and creating a freeze-thaw cycle that degrades quality.
Water Quality Management
Test your water quarterly. If total dissolved solids (TDS) exceed 200 ppm, upgrade your filtration. Some enthusiasts use reverse osmosis systems, but these waste water and may require a remineralization cartridge for optimal ice clarity. The sweet spot is 50-150 ppm TDS.
Alternatives to Dedicated Clear Ice Machines
Clear Ice Molds
For casual users, insulated clear ice molds produce 2-4 cubes at a time using directional freezing. They’re affordable ($30-100) and require no installation. The downside? Manual labor and limited capacity. Not ideal for entertaining, but perfect for nightly nightcaps.
Modular Ice Makers
If your basement has walk-out access, consider a modular ice maker in an adjacent garage or utility room with a window for ventilation. This isolates noise and heat but requires running an insulated line to the bar.
Commercial Ice Delivery
Some cities have boutique ice companies delivering 50-pound bags of artisanal clear ice weekly. For the cost of a machine’s annual maintenance, you could buy 500+ pounds of premium ice. The convenience is unbeatable, but you sacrifice the “wow” factor of on-demand ice.
Frequently Asked Questions
Can I install a gravity-drain ice machine if my basement floor is below the sewer line? No, gravity systems require the machine to be above the drain point. If your basement floor sits below the main sewer line, you’ll need a drain pump model or must elevate the machine on a platform to create sufficient drop.
How much clearance do I need around the unit for proper ventilation? Most manufacturers require 3 inches on each side, 6 inches at the back, and 8-12 inches above the unit. Check your specific model’s manual. In tight basement spaces, consider units with front-breathing designs that reduce side clearance needs.
Will a clear ice machine increase my basement’s humidity significantly? Yes, but moderately. A typical unit adds 1-2 gallons of moisture daily to the air. In a 400-square-foot basement bar, a 30-pint dehumidifier easily manages this. Proper ventilation is more critical than the moisture output itself.
How often should I replace water filters in a basement installation? Every 6 months is standard, but basement plumbing with older pipes may carry more sediment, requiring replacement every 4-5 months. Install a pressure gauge before the filter; a 10-15 PSI drop indicates it’s time to change.
What’s the minimum drain slope required for reliable operation? Plumbing code requires 1/4 inch per foot (2% grade) for proper drainage. However, ice machine manufacturers often recommend 1/2 inch per foot for optimal performance, especially with the small volumes of wastewater involved.
Can I use my basement laundry sink as the drain point? Yes, if you maintain proper slope and install an air gap to prevent backflow. The sink must be within 6-8 feet horizontally, and you’ll need to drill through the sink rim or use a dishwasher drain connection. Check local code for air gap requirements.
Do clear ice machines work in unheated basements during winter? Most units shut down below 50°F ambient temperature. If your basement drops to 40°F in January, production will cease or become sporadic. Insulate the room or choose a unit with a low-ambient kit, though these are rare in residential models.
How loud are these machines during the harvest cycle? Harvest cycles produce a distinct “thump” as ice releases from the evaporator plate. This typically registers 55-65 dB—comparable to a dishwasher. The compressor runs at 45-55 dB. Soundproofing the surrounding cabinet can reduce perceived noise by 10 dB.
What’s the lifespan difference between gravity-drain and pump models? Gravity-drain machines typically last 10-15 years with proper maintenance. Pump models average 7-10 years because the pump is a failure point. Basement environments accelerate pump corrosion, making gravity systems even more advantageous.
Can I run the drain line into my sump pump basin? This is generally not recommended. Sump pumps are for groundwater, not greywater, and mixing the two can violate code. Additionally, sump basins often contain bacteria and odors that can backflow into your ice machine. Always connect to a sanitary sewer line.