Hydrants Visual Reference Guide

Overview

This guide explains the visual indicators and color coding used throughout the EPR FireWorks Hydrants module. EPR FireWorks uses colors and icons to show hydrant flow capacity and maintenance status for rapid assessment during emergency response planning and hydrant testing operations.

NFPA 291 Hydrant Color Coding

EPR FireWorks uses NFPA 291 color coding to indicate hydrant flow capacity. These colors appear consistently across all hydrant interfaces and map displays.

Class AA Hydrants

• Flow capacity: 1,500 GPM or greater

• Application: Large incidents, industrial and commercial fires

Class A Hydrants

• Flow capacity: 1,000 to 1,499 GPM

• Application: Most fire operations, standard municipal systems

Class B Hydrants

• Flow capacity: 500 to 999 GPM

• Application: Residential areas, moderate water supply

Class C Hydrants

• Flow capacity: Less than 500 GPM

• Application: Limited water supply, may require multiple sources

Dry Hydrants

• Purpose: Alternative water source for drafting operations

• Application: Requires tanker/tender or portable pump operations

Maintenance Status Indicators

• Completed Activities: Checkboxes in EPR FireWorks indicate completed maintenance activities.

• Connection Types: Standard tracking includes 2.5-inch and 5-inch connections. Departments may configure tracking for 4.5-inch connections.

Map Display Features

• Color-Coded Markers: Hydrant markers on EPR FireWorks maps use NFPA 291 colors to indicate flow capacity for rapid visual assessment.

• Geographic Context: Map display provides a territorial overview for route planning and resource allocation during emergency response operations.