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Below you will see some photos showing installations from several different sites on Long Island. We want you to realize that your yard will be dug up and that some restoration work will have to be done either by you or a professional landscaper. Grass will grow back but hardscaping, trees, gardens, sprinkler systems might get damaged.

Recent Installations

Dear Homeowner:

You have taken the first step by coming to this page. I encourage you to do your research, check out other systems and ask questions. Please call us at 631-336-2420 x149 to learn more or email us at

Do not be afraid to pick up the phone and call us or send us an email. We are glad to help you through the process whether it is for choosing a system, seeking grant funding or getting help servicing your equipment Roman Stone is here to help you through the process.

The following is a summary of things that every homeowner should know about where their wastewater goes and how you can take care of your septic system to keep it functioning better.

A system that typically removes your untreated wastewater from your home. It should consist of a septic tank and a drainfield or a circular leaching pit. The septic tank traps most of the solids and the drainfield or leaching pit disperse the liquids (effluent) back into the ground.
is a concrete lined hole that is outlawed in almost all other parts of the country. It is supposed to function as a drain field that slowly dissipates your homeق€™s wastewater into the soil beneath your home. The reality is that they actually bring the wastewater closer to our groundwater and this nitrogen loaded wastewater is a primary cause of the algal blooms, fish kills and degraded water quality of our bays, estuaries and rivers. Many older homes on LI have block cesspools. These are very dangerous and can cause death if they collapse in your yard.
is a watertight concrete tank that traps most of the solids in wastewater (> 50%). The remaining ق€œbrownق€ water (effluent) flows by gravity out to your drainage field or circular leaching pit for further soil-based treatment. Every few years you should have your septic tank pumped (every 3-5 years is typical). The pumper brings your wastewater to a central wastewater treatment plant where it gets processed. Septic tanks have been mandated in Suffolk County since 1972. Many older homes in Suffolk County do not have septic tanks so their untreated wastewater is going directly into a cesspool and ultimately into our groundwater.
A sewer is a pipe with raw sewage (untreated wastewater) that leads from your house to a centrally located wastewater treatment plant or small community wastewater treatment system. Homeowners who are hooked up to a sewer pay sewer taxes which pays for the construction and operation of the sewer treatment plant.
An I/A OWTS (also known as an innovative/advanced septic system) makes your home its own mini wastewater treatment plant by reducing solid waste, pathogens, and nitrogen. ق€“ These systems have been approved for use in Suffolk County in a new law (Article 19) that was passed in September 2016. In the future, all Suffolk County new home construction will have to either install an I/A OWTS or be hooked up to a central sewer line to stop polluting our ground and surface waters. Grant and low interest loan funding is becoming available in July 2017 for existing home upgrades to I/A OWTS as well. An I/A septic system can be installed for a fraction of the cost of running a sewer line and keeps you the homeowner in control of your wastewater treatment expenses.

Septic System Do's

Generally, septic tanks should be pumped every three to five years. An inspection by a professional may show that you need to pump more or less often. Regular pumping ensures that solids will not flow from the septic tank into the drainfield or leaching pits. Wastewater solids can destroy the drainfield or leaching pits.
(see Home Water Savings Makes Sense). Reducing the amount of wastewater entering your septic system may increase its life span, as excessive water is a major cause of system failure. Too much water from laundry, dishwasher, toilets, baths, and showers may not allow enough time for untreated wastewater (sludge and scum) to separate, causing solids to pass out of the tank and into the drainfield or leaching pit, ultimately clogging them up. To reduce household water use:
  • Limit the use of large water consuming appliances, such as dishwashers and washing machines.
  • Use water-saving bathroom and kitchen fixtures (such as faucets, showerheads, and toilets).
  • Spread laundry over the entire week and avoid partial loads.
  • Fix all faucet and toilet leaks promptly.
  • Additional water from these sources may prevent your drainfield or leaching pit from working properly.
    This prevents tanks & pipes from breaking and soil from becoming compacted. Compacted soils can't absorb water from the drainfield or leaching pits.
    Phosphorus is harmful to the environment especially around freshwater and surface waters, as it leads to depleted oxygen levels causing serious harm to fish and other aquatic organisms. The use of phosphate-free detergents, also helps prevent algae problems in nearby freshwater lakes and streams.
    Risers from the tank lids to the soil surface make maintenance easier and can help keep your system safer.

    Bad Practices

    A garbage disposal adds solids and grease to your system, which could lead to drainfield or leaching pits failure.
    or "miracle" system cleaners. Some of these chemicals can actually harm your on-site sewage system by allowing solids to flow into and clog the drainfield and leaching pits. These chemicals can also contaminate ground and surface water.
    Large volumes of water are harmful to the system, and the chlorine can destroy important bacteria in the system. Drain hot tubs onto the ground, away from the drainfield or leaching pits and not into a storm drain.
    These include diapers, cigarette butts, coffee grounds, tampons, condoms and grease etc.
    Household chemicals, such as drain cleaners, paint thinners and floor cleaners, can destroy important bacteria in your septic tank and contaminate ground and surface water. Also, never pour unused paint into your septic system.
    Grass is the best cover for your septic tank, drainfield, and leaching pits. Soil compaction and paving prevents necessary oxygen from getting into the soil and reduces beneficial evapo-transpiration. This oxygen is needed by bacteria to break down and treat wastewater (sewage).


    Norweco and Roman Stone have each been operating businesses for over 100 years. When choosing a system make sure that the Company behind the system is going to be around when you need them.
    - We manufacture our concrete tanks in Bay Shore, Long Island. We have been at this location since 1962. We employ over 50 people and provide good paying manufacturing jobs that pay full benefits. We live and work on Long Island just like you do. We know you home is your biggest investment and you wastewater system is one of the most expensive systems in your home. Protect your investment in your home with a concrete tank that will last longer than you home and will require the least maintenance. Choose the Norweco Singulair TNT.
    - Our tanks are manufactured and certified water tight. Our concrete plant is NYSDOT approved plant and we are also members of PCANY and the NPCA. We invite you down to take a tour of our plant to see the quality that goes into our products.
    - The Norweco aerator has a lifetime exchange warranty.
    - Norweco Singulair TNT was one of the first systems to be piloted in Suffolk County and one of the first to be approved as meeting SCDHS standards.


    More information on wastewater systems can be found at:

    Suffolk County Department Of Health Services:
    Long Island Liquid Waste Association:
    The National Precast Concrete Association:

    Take a look at our FAQ's on Do's and Don'ts for your Septic System.

    Please call us at 631-336-2420 x149 to learn more or email us at