Maintaining Water Quality in Under Occupied or Unoccupied Buildings

The COVID-19 pandemic has changed everything about our lives in the last sixty days.  With the “Stay Home, Work Safe” orders and school closures, many commercial buildings are now under-occupied or completely unoccupied and may continue to be for months.  Without regular use from tenants, guests or students, it can be a challenge to maintain a building’s water systems.  Reduced consumption at the municipal supply and within the building can lead to reduced levels of chlorine and allow for bacteria growth, most notably Legionella, in the piping. 

To maintain water quality, a building’s water systems need to be flushed and tested.  Opening faucets, showers (hot & cold), flushing toilets, draining dead legs, running drinking fountains & bottle fillers, ice machines, coffee makers, and other appliances on a regular schedule will prevent the water from becoming stagnant and potentially allowing bacteria growth.  If any of these fixtures drain to a sanitary sump station, it needs to be pumped down on a similar schedule to prevent water from sitting in the basin for long periods.  The schedule for flushing building’s water systems will vary depending on occupancy, size, age, and design.

Regular water testing will provide feedback on the building’s water quality.  Cougar USA can provide on-site Legionella testing Spartan Bio Cube and deliver results in 45 minutes.  If Legionella is detected in the water, we can provide recommendations for short-term remediation and long-term mitigation. 

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Guide to Reopening Buildings After COVID-19

Guide to Reopening Buildings After COVID-19

Reopening buildings that have been unoccupied or under-occupied for the last 30-60 days may create some water quality issues you may need to address. Here are some resources to help this transition as smooth as possible:

Webinar

We recently hosted a webinar with Patrick Verwys from Triple Clear where he explains the potential water quality issues and how the Force Field filter technology can help in multiple applications when reopening buildings.  Watch the webinar here.

Guides

Mike Fehr (owner of Fehr Solutions, an independent water consultant), created two checklists that outline a detailed plan to identify systems, how to flush and/or change filters, and how to test the results to ensure the system is clean. Click below for the guides on Potable and Non-Potable water systems.

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5 Ways to Protect Your Building From City Water Disruptions

5 Ways to Protect Your Building From City Water Disruptions

Water is the Life Blood of commercial buildings, used for consumption, comfort heating & cooling, and patient care & sterilization in Hospitals. Disruptions in the city water supply can cause major issues from building closures to damaged equipment. Here are some ways to protect your building before, during and after losing the city water supply.

Monitor City Pressure

The City of Houston has a unique amendment to the UPC that requires an atmospheric storage tank of water before adding pressure boosting pumps. During an outage, the tank water level will be drawn down by consumption in the building, mainly the cooling tower make-up, and eventually, the tank and your piping will go dry because the tank level is not restored by city water. Getting a low city water pressure alarm from your tank level control panel allows you to take action and reduce water consumption before the tank and piping run dry.

Monitor Storage Tank Levels

Many storage tanks in Houston use Float Style valves to make up the water in the tank. These are mechanical valves that do not require a control panel to operate them, however, a simple Tank Level Alarm Panel can monitor the tank level and provide feedback to the Building Automation system in the event of a High or Low-Level Alarm. The Level Alarm Panel also can be used to protect your Booster Pump System from running dry through a Pump Low-Level Cutoff output. Without monitoring city pressure and/or tank water levels, there is no way to know there is an issue until it’s too late.

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