EHC‑33™
Enhanced Sewer Grease Control

Effectively Reduces Grease Buildup in Sewer Lines and Lift Stations

EHC-33™ Video

Why use EHC-33™?

When grease from homes, restaurants, and commercial facilities accumulates in wastewater systems, it reduces flow capacity, creates foul odors, and may lead to costly sanitary sewer overflows.

EHC‑33™ offers a cost‑effective, sustainable, and eco‑friendly solution to minimize grease buildup in sewer lines and lift stations. Each 8‑ounce water‑soluble bag contains a concentrated blend of safe bacteria designed to digest fats, oils, grease (FOG), and organic materials – reducing odors and preventing blockages.

Explore further details about this microbial supplement

Features

  • Industrial‑Strength Formula:

    Highly effective dry bacteria blend designed for tough grease control
  • Biodegradable:

    Fully breaks down naturally without harming the environment
  • Eco‑Friendly:

    Safe for use in various wastewater systems
  • Powerful Grease Breakdown:

    Effectively digests fats, oils, grease (FOG), and other organic materials
  • Enhanced Formulation:

    Contains surface tension depressants, micronutrients, growth stimulants, enzyme systems, and penetrants
  • High‑Performance Microorganisms:

    Specially engineered for superior biological treatment
  • Anaerobic Capabilities:

    Thrives and reproduces in environments without dissolved oxygen
  • Convenient Packaging:

    Ready‑to‑use, 8‑ounce water‑soluble bags
  • Available in 25‑lb pails (Product# 103625)

Benefits

  • Easy Application:

    Ready‑to‑use — just drop the EHC‑33™ bag directly into the wastewater flow
  • Grease Reduction:

    Effectively minimizes grease buildup in sewer lines and lift stations
  • Prevents Blockages:

    Helps reduce line blockages and enhances flow capacity
  • Less Maintenance:

    Lowers the need for frequent cleaning and maintenance
  • Enhanced Pollutant Removal:

    Improves removal of BOD, COD, and TSS
  • Odor Control:

    Reduces buildup of organic materials that cause unpleasant odors
  • Hydrogen Sulfide Reduction:

    Decreases the presence of hydrogen sulfide
  • Optimizes System Performance:

    Enhances overall system efficiency

Usage Instructions

Grease-related issues commonly arise within 300 feet of high grease generators, such as restaurants. Since grease emulsifies at 140ºF and dishwashers typically rinse with water at 180ºF, grease often bypasses grease traps and flows directly into the city’s sewer lines. As the water cools, the grease solidifies and blocks the line. Many restaurant owners are aware that running hot water can temporarily emulsify the grease, pushing it further down the line.

If there are no restaurants on the line, potential sources of grease buildup may include apartment complexes, schools, catering kitchens, food processing plants, or any location where large-scale cooking occurs.

Additional concerns arise in areas where sewer lines have sagged due to ground erosion or in siphons running beneath streams or bridges. These lines are especially challenging to clean as heavy debris (e.g., stones) can accumulate, trapping grease and worsening blockages.

A consistent EHC‑33™ treatment program can significantly reduce or eliminate these grease blockages, ensuring more efficient sewer line performance.

Key questions to determine the necessary dosing include:

  • What is the diameter of the line?
  • How long is the section where grease is accumulating?
  • How many manholes are involved?
  • How many high grease generators (e.g., restaurants) are connected?
  • Which sections of the line are historically problematic?
  • Do any of these lines have sags?

Applying EHC‑33™ is simple—it comes in 8‑oz water‑soluble packets that require no pre-mixing. Just open the manhole and drop the packet into the flow.

The Cleanup/Inoculation Phase

Treat the line in 500‑foot sections to clear the line and establish a population of grease‑eating bacteria. Start downstream and work upstream, and for lines over 1,000 feet, begin the maintenance dose while continuing inoculation.

Maintenance Phase

After the initial doses, treat up to one mile of line by multiplying the dose by 5.2. Weekly inspections are recommended, and after six months, reduce the dose by 50% if no buildup is detected. Consistent application (e.g., Monday and Friday dosing) is key.

Treating the grease‑generating sewer lines leading to a lift station with EHC‑33™ can significantly reduce grease buildup within the station itself. Cleaning the lines often results in a cleaner lift station, although initial treatment may temporarily increase grease levels before resolving the issue within three to four months.

If cleaning the lift station beforehand isn’t feasible, document the initial grease cap with measurements and photos for comparison. For thick grease caps, punch holes to allow proper bacterial activity.

Even if only one line enters the lift station, isolating and treating the grease‑generating section may be possible. Safety and consistency in application remain paramount.

Flow Rate Initial Dosage Maintenance
Up to 1,000 GPD ½ lb. per day for 3 days ½ lb. per week
Up to 5,000 GPD ½ lb. per day for 3 days 1 lb. per week
Up to 20,000 GPD 5 lbs.* 1 ½ lb. per week
Up to 50,000 GPD 8 lbs.* 2 lb. per week
Up to 250,000 GPD 15 lbs.* ¼ lb. per day
Up to 500,000 GPD 25 lbs.* ½ lb. per day
Up to 1 MGD 50 lbs.* 1 lb. per day
Up to 5 MGD 50 lbs. per MGD* 1 lb. per MGD per day
Up to 12 MGD 50 lbs. per MGD* ¾ lb. per MGD per day
Up to 100 MGD 30 lbs. per MGD* ½ lb. per MGD per day

* Spread this initial dosage out over the course of 10 days.

* * Add as regularly as possible. If a day is missed, add that day’s product with the next dosage.

Dosage rate will vary with flow rates, retention times, and system variations. Do not dose where adverse pH, dissolved oxygen, or temperature conditions exist.

For optimal results the wastewater and treatment system should meet the following conditions:
Optimum Minimum
Influent pH 7.0 5.0
Dissolved oxygen, ppm 2.0+ 1.0+
C/N/P ratio 100/10/1 100/5/1
Temperature 30°C (86°F) 10°C (50°F)
Toxic metals, ppm
(E.g., hex., chromium)
0 0
Storage and Handling

Storage: Store in a cool, dry place

Handling: Wash hands thoroughly with warm, soapy water after handling

See label and SDS for safety information.