Wastewater Tank Level Gauge
Collecting, treating, and returning water to the environment is essential work — and it depends on knowing exactly what’s in every tank. For over 75 years, Krueger Sentry Gauge has supplied accurate, reliable instrumentation to municipal and industrial wastewater facilities alike, all built in Green Bay, Wisconsin from American-made components in compliance with the Buy American Act.
Because treatment chemicals are often corrosive, we build our wastewater gauges in stainless steel (316L) as well as plastics and other chemically resistant materials, and our in-house machine shop lets us size and fit each gauge to your tanks. Our line for the wastewater industry includes:
- Leak Detection Gauges
- Liquid-Level Gauges
- Overfill Alert Gauges
Wastewater Tank Gauge Applications
From headworks to final discharge, treatment facilities store and dose a range of chemicals that keep the process running and the water safe. Our gauges give operators dependable level readings on the tanks that hold them. Chemicals we commonly gauge include:
- Chlorine
- Chlorine dioxide
- Muriatic acid
- Sodium bicarbonate
- Algicide
- Coagulants & polymers
Treatment Processes We Support
Wastewater treatment combines physical, chemical, and biological steps — and each stage relies on accurate level measurement to stay in balance and in compliance. Municipal plants operate under the Clean Water Act, while industrial facilities meet IPPC requirements and Best Available Technique (BAT) standards. Our gauges support processes that include:
Chemical Dosing & Feed Tanks
pH adjustment, coagulation, disinfection, and fluoridation all depend on precise chemical dosing. Our gauges give operators a reliable reading on feed and day tanks so treatment stays consistent and chemicals are reordered before they run low.
Sedimentation & Filtration
Clarifiers, sedimentation basins, and membrane and ion-exchange filtration systems all benefit from accurate level indication. We help facilities monitor the tanks feeding these processes so flow and retention times stay where they should.
Odor & Corrosion Control
Chemicals used for taste, odor, scale, and corrosion control are often aggressive. We match the gauge material to the media so the instrument lasts as long as the process it serves.
Solids & Sludge Handling
From solids removal to sludge storage, knowing tank levels helps crews schedule hauling and avoid overflows. Our durable gauges hold up in the demanding conditions of solids handling.
Neutralization Gauges
Neutralization tanks balance acidic and alkaline streams before discharge, and dosing them accurately depends on knowing your chemical levels. Our gauges give operators reliable readings on acid and caustic feed tanks so neutralization stays on target.
Advanced Oxidation Gauges
Advanced oxidation processes rely on precisely dosed oxidizers to break down stubborn contaminants. We help facilities monitor the chemical tanks feeding these systems so treatment stays consistent and reagents are reordered on time.
API Separator Gauges
API and hydroplane separators pull oil and grease from wastewater, and level indication helps operators manage separation and skimming. Our durable gauges hold up in the demanding conditions these systems create.
Distillation & Evaporation Gauges
Distillation, evaporation, and vitrification concentrate and recover materials from wastewater streams. We build gauges rated for the heat and aggressive media these thermal processes involve, so readings stay accurate where standard instruments struggle.
Built for an Industry That Protects Public Health
Wastewater treatment quietly protects the health of every community it serves, and the people who run these facilities need instrumentation they can trust around the clock. At Krueger Sentry Gauge, we’re proud that our American-made gauges help municipal and industrial operators treat water safely, efficiently, and in compliance.
Frequently Asked Questions
Got questions? Get answers instantly by browsing our FAQs below, chatting with our AI assistant, or reaching our to our team directly.
What do we use as a part number?
At Krueger Sentry, we don’t use classic part numbers. Everything is description-based. Refer to your product’s Spec Page (materials options) and the Order Info (tank measurements) page for more information. Example Part Number: – H-2-48 + 12 w/glass (H signifies the type of gauge, 2 is the size opening, 48 is the tank depth, 12 is the extension, and everything after that is the options you want to be included.
Which liquid level monitor is the right choice for me?
When choosing a liquid level gauge, different factors can change which sight gauge is best for you. The basic factors that motivate people to buy each type of gauge are as follows.
- Economical sight gauge- At-A-Glance Direct Reading
- Versatile sight gauge- Therma Gauge
- Small tank monitor, under 12 inches – The L Gauge
- Standard Barrel Level Gauges – Barrel Gauge
- Up to 12 feet of mechanical remote capability – Remote Reading Gauge
- Durability – GFK Gauge – you can achieve this durability by ordering a therma gauge with a gauge guard as well.
How do I find or locate a Krueger Sentry Gauge distributor?
Search our Preferred Distributor Page. Don’t see a distributor you want to use? Call me. Lee Geurts: 920-434-8860 ext 204
Which sight gauge do you recommend most often to your customers?
I try to sell the Therma gauge to most people. It is nearly as inexpensive as the At A Glance Gauge, but you have more control over your swing arm. Plus, this level gauge can be fitted with the most options.
What is the difference between the Type D At a Glance Level Gauge and the Type H Therma Level Gauge?
The Swing arm on the Type D Gauge is fixed. When you thread in the gauge, the swing arm spins inside the tank and will end up facing in a random direction. The swing arm on the Type H Gauge can be aimed in the exact direction you want it to swing, and when you thread the gauge in it does not spin inside the tank.
How long is the swing arm on a level gauge?
The arm is always half the depth of your tank.
How do I order a custom-size level gauge?
In order to get an accurate gauge for your tank, we take two measurements into consideration. First, we measure, in inches from top to bottom, what the distance is from empty to full, known as tank depth. Second, the distance from the full mark to the gauge fitting on top is also known as an extension length. Sometimes this measurement comes out to zero.
How do I prevent my tank gauge from getting damaged by the sun and weather?
Ordering upgraded options such as Solid Glass Tops and Gauge Guards will make your Krueger Gauge nearly impervious to weather, sun, and damage.
Can I repair just the top of my Tank Gauge, or do I need to replace the whole thing?
If your gauge still seems functional, you can replace just the top components by ordering the corresponding repair kit. Repair Kits are available for all gauge types and come in a variety of material options for added durability, which can be found in the Tank Gauge Accessories.
What is the recommended maintenance/testing for Krueger Leak Gauges?
Krueger Sentry provides a Leak Gauge Functionality / Calibration Testing Report with inspection procedures for inspectors/technicians. Please contact us with any questions.
