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Water supply & fire-flow intelligence

Know your water supply. Prove your fire flow.

WaterDash turns every NFPA 291 flow test into an answer: is the available fire flow at an address enough for the needed fire flow the building requires? Get a defensible number in seconds — and a verifiable certificate insurers and AHJs accept. Built by the team behind FireDash.

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NFPA 291 · AWWA M17 · ISO Pay per report No subscription to start
Fire-flow availability 1428 Maple Ave
PASS
Adequate · Class A
1,750 gpm available · 1,500 gpm needed
Available @ 20 psi 1,750 gpm
Needed fire flow 1,500 gpm
Margin +250 gpm
Governing hydrant 220 ft · Class A
How it works

From an address to a defensible answer — in minutes.

WaterDash standardizes fire-flow analysis so a utility, an engineer, or an AHJ can produce a defensible water-supply adequacy result without chasing data across spreadsheets and reference tables.

1. Enter a property

Give an address (or drop a pin) plus construction class and area, and the governing hydrant’s NFPA 291 test. With Premium, WaterDash finds the nearest gauged hydrants automatically from recorded flow tests.

2. Compute the flow

Available fire flow (projected to 20 psi) versus needed fire flow (ISO NFF) — with the governing hydrants and the math shown.

3. Issue the certificate

Turn a passing result into a verifiable WD- certificate — pay-per-report, checkable at verify.firedash.us.

Why WaterDash

Everything you need to assess, document, and prove a water supply.

Stop juggling pitot readings, pressure logs, and ISO tables. WaterDash brings the whole fire-flow workflow into one place.

Available fire flow

Project any NFPA 291 / AWWA M17 flow test to a 20 psi residual to get the gallons-per-minute actually available at an address.

Needed fire flow

Compute ISO needed fire flow (NFF = 18·C·√A) — or the IFC Appendix B table — from construction class and effective area.

Verifiable certificates

Issue a Water Supply Adequacy Certificate (WD-) any insurer or AHJ can confirm at verify.firedash.us.

Distribution network map

See hydrants as flow & pressure nodes, color-coded by AWWA class, with low-pressure zones and weak spots surfaced.

Flow-test scheduler

Log NFPA 291 tests, auto-rate each hydrant, and track the AWWA test cycle so nothing falls overdue.

One data layer

Built on the same authoritative hydrant + property data that powers FireDash and RiskDash.

The engine

Standards-grade, every number traceable.

No black box. Available flow, needed flow, and the flow class all trace to a published method and the NFPA 291 flow test you enter — or, with Premium, a recorded field measurement WaterDash found nearby.

Available @ 20 psi
Q₂₀ = Qᶠ · ((Hₛ − 20) / (Hₛ − Hᵣ))0.54 — NFPA 291 / AWWA M17.
Needed fire flow
ISO NFF = 18 · C · √A by construction class & effective area (or IFC Appendix B).
AWWA flow class
AA ≥1500 · A 1000–1499 · B 500–999 · C <500 gpm, color-coded on the map.
NFPA 291 flow tests
Log static, residual, and test flow; WaterDash rates the hydrant and schedules the next test.
Weak-spot alerts
Surface Class C hydrants, low-pressure zones, and overdue tests across the district.
Hydrant proximity
Governing hydrant distance feeds both the result and the FireDash insurance-distance story.
The toolbox

24 calculators + 5 checklists, built to the standards.

Every formula runs server-side and is verified against its published standard — NFPA 291, ISO/IFC, AWWA M32/C651/M36, Hazen-Williams, IPC, and more. Free to use.

Fire protection & supply

Needed fire flow, hydrant flow test, sprinkler demand, storage sizing

Hydraulics & pipe sizing

Hazen-Williams, pipe sizing, pressure ↔ elevation, water hammer, plumbing demand

Utility operations

Main flushing, disinfection, water-loss audit (ILI), pump energy

Conservation & site water

Stormwater runoff, irrigation demand, rainwater harvesting, cooling towers

Residential

Pressure check, bill estimator, leak test, water heater & softener sizing

Checklists

Hydrant inspection, cross-connection, Legionella, NFPA 25, lead inventory
Open all water tools
The sellable artifact

A Water Supply Adequacy Certificate anyone can verify.

A passing fire-flow result becomes a WD- certificate — carrying a certificate number, a tamper-evidence hash, and a QR code. An insurer or AHJ confirms it is genuine and unaltered at verify.firedash.us. Pay-per-report; no subscription required.

Generate a certificate

WD-2026-04417

Authentic
Property
1428 Maple Ave
Result
PASS · +250 gpm
Available
1,750 gpm · Class A
Needed
1,500 gpm
Verify at verify.firedash.us · hash a9f3c1…4d61
By the numbers

Backed by the broader FireDash platform.

The same authoritative hydrant + agency data that powers FireDash and RiskDash feeds WaterDash’s network map and nearest-gauged-hydrant lookup.

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NFPA standard
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psi residual basis
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AWWA flow classes
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Fire departments connected
The FireDash platform

One data layer. Three lenses on it.

WaterDash is part of the FireDash family — sharing infrastructure, identity, and the same authoritative hydrant + agency data.

For agencies

FireDash firedash.us

The dashboard fire departments use to map, inspect, and maintain their hydrants and water assets.

Visit FireDash
For homeowners

For Residents resident.firedash.us

Find the closest hydrant to any home and generate insurance-ready proof certificates.

Visit Residents
For risk teams

RiskDash risk.firedash.us

Advanced property risk assessment with verifiable reports — for insurers, EHS, and consultants.

Visit RiskDash
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Water-supply & fire-flow intelligence for utilities, engineers, and AHJs.

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FAQ

Questions, answered.

Water utilities managing a distribution network, fire-protection engineers and sprinkler designers sizing supply, AHJs and plan reviewers, and insurers underwriting on available fire flow. The same accounts work across the FireDash platform.

WaterDash projects a measured NFPA 291 / AWWA M17 flow test to a 20 psi residual using the standard rated-capacity formula (the 0.54 exponent). Needed fire flow uses the ISO formula NFF = 18 · C · √A (or the IFC Appendix B table). Every number on a result traces back to a published method and the flow test behind it — the NFPA 291 test you enter, or, with Premium, a recorded field measurement WaterDash found near the property. The result and your certificate page say which of the two it was.

A verifiable PDF (a WD- certificate) that records the available vs. needed fire flow, the governing hydrants, and the result. It carries a certificate number, a tamper-evidence hash, and a QR code that anyone can check at verify.firedash.us to confirm it is genuine and unaltered. Issuing one is a one-time pay-per-report fee — no subscription required.

They share one data layer. FireDash is the fire department’s view of the hydrant network; RiskDash is the insurer/property-risk view; WaterDash is the water-utility / water-supply view. Same hydrants, same identity, different focus.

No. Checking fire-flow availability is free, and issuing a certificate is pay-per-report. A subscription adds the utility tools — the distribution map, flow-test scheduler, and multi-property management.

Check your first property today.

Create a free account and run a fire-flow availability check in under five minutes. Pay only when you issue a certificate.

Get started — free
Help Center

Questions about WaterDash?

Fire-flow checks, the water tools, and Water Supply Adequacy Certificates. Everything is in the FireDash Help Center — searchable, free, and open without an account.

Browse the knowledge base Submit a ticket
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