Hach Company - Flow Products & Services
Hach Company - Flow Products and Services, including our legacy brands Sigma and Marsh-McBirney, has a proven track record of creating industry-leading innovations with unwavering product accuracy in the open-channel flow measurement world. Empowering you with true and timely flow data for your analysis, we dramatically reduce your risk and enable you to make critical wastewater flow decisions with absolute confidence. And smart decisions mean you're proactively managing your flow, rather than reactively dealing with problems. From state-of-the-art wireless flow loggers and industry-pioneering non-contact flow sensors, as well as our revolutionary Hach Data Delivery Services (DDS), Hach Flow is committed to providing flexible solutions for all of your flow monitoring challenges.


5600 Lindbergh Drive
Loveland, CO 80539
United States
Toll-free: 800.368.2723
Phone: 970.622.7120
Fax: 970.619.5150

Products + Services

Hach Data Delivery Services (DDS) is a flow-monitoring service in which, for a fixed monthly fee, Hach provides all the equipment, resources and support you need to acquire your flow data. DDS utilizes wireless Hach FL900 Series flow loggers and noncontact FLO-DAR AV Sensors to transmit flow data directly to your desktop. more
  • Hach Data Delivery Services (DDS) is a flow-monitoring service in which, for a fixed monthly fee, Hach provides all the equipment, resources and support you need to acquire your flow data. DDS utilizes wireless Hach FL900 Series flow loggers and noncontact FLO-DAR AV Sensors to transmit flow data directly to your desktop. more
  • Combine the convenience of wireless data delivery with the intelligence of noncontact flow monitoring. Using wireless Hach FL900 Series flow loggers and noncontact FLO-DAR AV sensors, this system captures flow data with a high level of accuracy, dramatically reduces required maintenance and significantly limits the risk of lost data due to sensor downtime. And with wireless, real-time data is... more
  • The diagnostic tools and advanced architecture in the Hach FL900AV flowmeter with AV9000 analyzer module make it possible to acquire useful flow data at very difficult sites. This meter—which includes advanced signal processing and filtering options—provides clean and precise velocity and level flow data to wastewater professionals using a traditional submerged sensor. more
  • Hach’s level-alarming solution—which pairs a Hach US9001B ultrasonic sensor with Ballast and a wireless Hach FL900 Series flow logger—provides wastewater professionals with an economical approach to monitoring and capturing data from multiple sites in their network. No confined space entry is ever required for either installation or maintenance, and alarm alerts can be automatically delivered to... more
  • The Hach FL900 Series flow logger is a rugged, reliable and innovative data logger that is equipped to handle difficult environments. The FL900 has up to four plug-and-play sensor ports that auto-detect sensor types, facilitating rapid setup. An LED display informs users on site if the logger is functioning properly. A wireless-enabled option, providing real-time data transmission and alarming,... more
  • Using digital Doppler radar velocity-sensing technology and ultrasonic level sensing, the FLO-DAR AV sensor advances open-channel flow monitoring by measuring from above the wastewater flow. This dramatically reduces the possibility of sensor fouling and the resulting loss of data. It also means that it can be used under a wide range of challenging flow and site conditions. more
  • The Hach FH950 handheld flowmeter with electromagnetic sensor is designed for use in both environmental and sewer/wastewater flow measurement scenarios. It can be utilized for profiling water current in streams and rivers, providing redundant verification of wastewater flow data and selecting an optimal site for metering. The intelligent sensor measures both velocity and level, and the FH950... more

Going with the Flow

In an effort to identify cases of unbilled, underbilled or unaccounted-for water and sewer processing fees, the City of Gulfport, Miss. contracted the Water Company of... more

City of Loma Linda Trades Up to DDS for Sewer Billing Application

When the city of Loma Linda, Calif., was looking for an alternative to traditional flow monitoring they traded up to Hach's Data Delivery Services (DDS) for their... more

Ultrasonic Flowmeter Delivers

When the Templeton Community Service District, located in Templeton, Calif., needed to replace an existing wastewater flowmeter, they turned to their local Hach Flow... more

Short-Term DDS, Long-Term Solutions

When flowmeters were needed for a short-term flow monitoring project in Cibolo Creek, Texas, HMT Engineering & Surveying selected Hach's Data Delivery Services (DDS... more

It's A One Man Show

New flowmeters provide savings for their entire flow monitoring program more

Wireless Technologies and Non-Contact Flow Measurement Open a New Door for Flow Data Delivery and Hands-Off Flow Monitoring

For many municipalities, the traditional method of sewer flow monitoring is an expensive proposition and can be a hassle. The flow meter network purchase along with flow... more

Hach Announces New Sensor Technologies

Hach Company Flow Meter Products & Services has announced that the Hach FL900 Series flow meter family now includes an extensive selection of sensor technologies... more

Hach Announces New Water Analysis Kit for Hydraulic Fracturing

Hach Co. has announced the new Hydraulic Fracturing Water Analysis Kit. Offering onsite results in an easy-to-use, rugged, portable case, the kit covers key parameters... more

Data Delivery Services Determines Flow Rates in Lubbock, Texas

When a feasibility study was required for a new water reclamation plant in Lubbock, Texas, Alan Plummer Associates selected Hach's Data Delivery Services (DDS) to... more

U.S. Steel Chooses Data Delivery Services for Water Discharge Waste Flow Monitoring

When a requirement for three flowmeters for Great Lake’s discharge water in the "hot roll" process were required Hach’s Data Delivery Services was selected. more

Cleveland Metroparks Zoo Upgrades Flowmeter

Home to more than 3,000 animals representing 600 species, the Cleveland Metroparks Zoo is a popular attraction enjoyed by people of all ages. The Facilities Operations... more

Three Decades Strong

For nearly two decades, Elco Corporation has chosen innovative Marsh-McBirney open channel flow monitoring products to provide accurate flow data for its billing... more

Flow Service on the Cutting Edge

The prioritization of municipal sewer system rehabilitation work to reduce inflow and infiltration (I&I) is based largely on the selection of projects that will most... more

Product Categories

Storm Water Monitoring Equipment; Flowmeters; Rental Services; Flowmeters, Ultrasonic; Meters, Ultrasonic

Contact Form

You can send a message to this company using the contact form below.

Type the characters you see in this picture. (verify using audio)
Type the characters you see in the picture above; if you can't read them, submit the form and a new image will be generated. Not case sensitive.


Raleigh, N.C., has added a small increase to water bills as a permanent watershed protection fee. Do you agree with this idea?:
There is less than one week left to submit your nominations for Water & Wastes Digest's Top... more
Americans are willing to spend a lot of money on water. Now that I have your attention (and many of... more
When it comes to planning for the future, companies have a whole host of issues likely keeping... more
Proposed Clean Water Act clarifications raise questions
Wetlands, streams and the politics surrounding them are once again front page and center stage, as federal agencies and... more
Innovation & the business of water go hand in hand
Recent events remind me how water connects us, technology informs us, and innovation delivers us from stagnation.... more
Third-party certification for fracking to ensure compliance with performance standards
In the past two years, my Ferguson on the Frontline column has covered a number of topics, from rainwater collection to... more