Haws®

Tempered Water Solutions

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Tempered Water Solutions for ANSI Compliance

Haws designs, builds, implements, and manages custom-engineered industrial safety systems that provide tempered water for large-scale decontamination and emergency wash installations in extreme operating environments. Our goal is to address your unique requirements efficiently and effectively, while ensuring continuous ANSI compliance.

With more than 40 years of in-field product design knowledge and experience, we have pre-engineered and designed model configurations to meet most site requirements. Facilities and safety teams can rely on our expertise to solve their tempered water compliance needs.

All engineering designs are created and manufactured in our USA facility allowing for design compatibility and quality assurance, with order timeline control and oversight for each project.

Engineered Safety Solutions

Large-scale water tempering systems

Transportable water tempering skids

Water pumping systems

System integration

Waste heat re-capture

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How to Buy

Fill out Project Questionnaire.

If you already know the specifications of your facility, fill out our Project Questionnaire, and submit it to [email protected].

Download Haws Tempering System Questionnaire

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What is Tempered Water?

Understanding the ANSI Z358.1 Tepid Water Requirements

The original ANSI Z358.1 Standard for Emergency Showers and Eyewashes was first written in 1981 by the ISEA (International Safety Equipment Association) with additional modifications in 1990, 1998, 2009, 2009, and the current 2014 version. The 2009 revision addressed crucial points relating to temperature range for water delivery.

Temperature Range for Water Delivery

In the 2004 Standard, it was not clearly outlined what tepid water meant and instead just simply stated that tepid was defined as moderately warm; lukewarm. The 2009 revision specified an exact temperature range to guarantee proper flushing.

Tepid Water is defined as 60° F -100° F  (16° C - 38° C)

  • Encourages use of safety equipment
  • Encourages removal of contaminated clothing
  • Encourages full 15-minute drench
  • Cools chemical burns
  • Prevents chemical absorption

TOO COLD

Temperatures in the lower end of the tepid water range may cause:
  • cold shock, possibly leading to cardiac arrest
  • user to end flushing before the recommended time has passed

TOO HOT

Legionella bacteria growth thrives between 95 and 115° F, a range that overlaps the current ANSI tepid water range.

While the ANSI standard does require a weekly flush to clear all piping sections that lead to emergency shower and eyewash station, avoiding temperatures that harbor bacteria is a valuable step in limiting potential exposure.


Haws provides many solutions to emergency equipment needs with our dedicated team of engineers and technicians designing safety solutions. The Haws Integrated team provides a complete line of custom engineered mixing valves, tempered water solutions, recirculation systems, air-charged systems and alarms designed around specific requirements and meeting all ANSI Z358.1-2014 prerequisites.

Haws® services

Haws Services provides comprehensive compliance options executed by factory service technicians who will work closely with your teams to provide the best support in reaching ANSI/ISEA Z358.1 complance.

  • Startup & Commissioning: Provides a comprehensive five-point service designed to ensure reliability of your emergency equipment.
  • All-Inclusive Warranty Support: The warranty services provider for Haws Integrated's emergency response shower, eyewash, and tempered water booth systems. Qualified service technicians work closely to provide the best support both on-site and remotely.

Haws Services has a full program offering to help your facility achieve ANSI/ISEA Z358.1 compliance

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Toll-free: (888) 640-4297 (customer service hours 7am to 4pm Pacific time, M-F)
Direct phone: +1 (775) 359-4712
Fax: +1 (775) 359-7424

Email: [email protected]

1455 Kleppe Lane 
Sparks, Nevada 89431

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