Written by: Paul Foster, Founder, CEO, OnePlan
Key Takeaways for County Fair Utility Planning
- Accurate utility documentation prevents last-minute chaos, failed inspections, and safety incidents by marking and verifying every hook-up before vendors arrive.
- Work from verified base drawings, walk the site to confirm pedestals and meters, and always call 811 before excavation or heavy placement.
- Use the APWA Uniform Color Code and standard symbols so contractors, inspectors, and vendors can read the plan without ambiguity.
- Check all utility runs against pedestrian routes, livestock areas, and emergency access lanes, then resolve conflicts with proper protection measures before finalizing the plan.
- OnePlan turns this workflow into a visual, to-scale map that exports a permit-ready plan and Bill of Quantities in minutes, so you can see how it works for your next county fair in a quick walkthrough.
Step 1: Build a Verified Base Map of Existing Utilities
Objective: Build a verified base layer of all permanent utility infrastructure before placing a single temporary asset.
Start by collecting every utility record available for your fairgrounds. Pull as-built drawings from your county’s public works department, utility company maps for electrical pedestals and transformers, water authority records for main lines and meter locations, and any previous event site plans that documented hook-up points. Convert these documents to .png files and import them into your planning platform so they become a buildable base layer rather than static files sitting in a folder.
Walk the site once you have the records. Confirm that pedestals, transformers, water meters, and sewer cleanouts match the drawings. A reliable utility map should document utility type and apparent status, source of information, known access points, and any conflicts between records and field findings, so note every discrepancy before the plan goes any further.
Call 811 before any ground-penetrating work or heavy temporary structure placement. Regulations require contacting 811 before excavation to allow time for marking according to local response times. Remember that 811 covers public utilities only, and private lines such as sewer laterals and irrigation systems require separate locating.
Step 2: Choose Which Service Points Stay Permanent and Which Go Temporary
Objective: Decide which utility connections will draw from permanent fairground infrastructure and which require temporary service such as generators, water tanks, or portable sewer solutions.
Most county fairgrounds use a mix of permanent pedestals and temporary distribution. Focus on capacity and redundancy at this stage. Divide the site into power zones, each served by a designated generator and distribution box, so that a single overload affects only one zone rather than the entire fairgrounds. Require vendors to submit equipment lists with wattage and voltage, then add a 20–30% safety margin based on peak operating periods.
Plan water supply with the same level of detail. A typical food truck uses 30 to 50 gallons of fresh water per service day. Multiply that across your vendor count and confirm whether permanent supply lines can meet demand or whether temporary tanks are needed. Gray water from cooking and washing must go into sealed tanks and then to approved municipal sewer connections or contracted wastewater removal points. Mark those disposal locations on the plan now.
Check generator regulations for your jurisdiction before you lock in locations. As an illustrative example, in Ontario, mobile generators rated above 12 kW or 240 V require an ESA inspection when hardwired or connected via Cam-Lok connectors. Confirm your local authority’s rules, then translate those requirements into clear generator zones on your plan.
Step 3: Place and Label Each Utility with Standard Colors and Symbols
Objective: Mark every utility connection on the site plan using a consistent, recognized symbol legend so that contractors, inspectors, and vendors can read the plan without ambiguity.
The APWA Uniform Color Code, referenced to ANSI Z535.1, is the standard reference for utility marking colors in the United States. Use it as the basis for your site plan legend.
| Utility Type | APWA Color | Common Symbol / Line Style | Label Convention |
|---|---|---|---|
| Electrical (power, conduit, lighting) | Red | Solid red line, electrical meter or handhole icon | ELEC or E |
| Gas / propane | Yellow | Dashed yellow line, gas meter or shutoff icon | GAS or G |
| Potable water | Blue | Solid blue line, water meter or hydrant icon | WTR or W |
| Sanitary sewer / drain | Green | Dashed green line, manhole or cleanout icon | SWR or S |
| Generators (temporary) | Red (electrical feed) + asset icon | Generator symbol with red distribution lines | GEN + zone ID |
Civil engineering symbol libraries based on the US National CAD Standard v6 include discrete icons for sanitary sewer manholes, water meters, fire hydrants, natural gas shutoffs, electrical handholes, and electrical meters, so use these as your icon reference when building the legend. Add a note on each symbol showing owner initials, material type, and depth where known, following APWA field-marking conventions that include owner initials, material type, pressure indicators, and depth measurements.
Use OnePlan to drag and drop generator, water, and power objects directly onto your to-scale map, then label each one. The platform automatically saves every item to the Bill of Quantities, so your legend and your inventory stay in sync and ready for export.
Step 4: Resolve Conflicts with Routes, Livestock Areas, and Emergency Access
Objective: Identify and resolve any overlap between utility runs and the routes that people, animals, and emergency vehicles need to use safely.
Power cables crossing pedestrian walkways create one of the most common fairground hazards. When cables must cross walkways, they must use cable ramps, protective channels, or covers and be clearly marked, with all joints using waterproof plugs and junction boxes to prevent water ingress. Mark each crossing and its protection method on the plan.
Keep livestock areas separate from contamination risks. Maintain clear separation between water supply lines and waste collection points, and confirm that gray water drainage routes do not pass through animal holding zones. Site plans for temporary kitchens and mobile units must reserve 10–20 feet of clearance on each side of the unit footprint for utility access, ramp entry, and emergency egress. Apply the same clearance logic to any large temporary structure near livestock pens.
Overlay your utility runs against your emergency vehicle access routes and confirm that no cable, hose, or distribution box blocks a fire lane or ambulance path. A to-scale plan makes these conflicts obvious, because problems that stay hidden on a rough sketch stand out clearly on an accurate map.
Use OnePlan’s arrival calculator and exit calculator to model pedestrian flow around utility zones before you finalize placement.
Step 5: Export a Permit-Ready Plan and Bill of Quantities
Objective: Produce a permit-ready site plan and an exportable inventory that contractors, inspectors, and vendors can use without a follow-up call.
Regulatory compliance requires submitting accurate site plans to the local building department or municipal engineering office and keeping approved permits on-site for inspection. Your exported plan should show every utility type with its APWA color, symbol, and label. It should also show all temporary assets including generators and water tanks, cable crossing points and protection measures, and clearance zones around high-load equipment.
In OnePlan, every object placed on the map saves automatically to the Bill of Quantities, which exports to Excel or CSV. That means your permit submission, your contractor briefing pack, and your vendor hook-up list all come from the same source, with no re-keying and no version drift. Export a high-resolution PNG map, up to A0 and print-ready, for the permit application and share a live view link with your electrical contractor and water supplier so they always see the current plan.
Accurate utility documentation supports regulatory compliance and enhances site safety protocols by providing clarity to protect workers, critical infrastructure, and prevent service disruptions, and it gives your local authority the confidence to approve faster.
Numbered Placement Checklist for Utility Locations
Use this checklist to confirm every utility type is located, marked, and documented before your plan goes to permit review.
- Electrical pedestals and transformers marked in red with ELEC label and amperage noted
- Temporary generator locations marked with GEN symbol, zone ID, and minimum clearance from structures and ignition sources
- Power cable routes shown from source to distribution box, with cable crossing points identified and protection method noted
- Potable water main connection and meter locations marked in blue with WTR label
- Temporary water tank locations marked with capacity and supply pressure noted, with minimum 20 PSI for food vendors
- Water refill stations placed near high-traffic areas such as food stalls, livestock areas, and main pedestrian routes, and labeled on the plan
- Sanitary sewer tie-in or cleanout locations marked in green with SWR label
- Gray water collection tank locations marked with disposal route to approved sewer connection or removal point
- Grease trap locations marked adjacent to food vendor zones
- Natural gas or propane lines marked in yellow with GAS label and shutoff locations identified
- Handwashing station locations marked within or immediately adjacent to each food vendor zone
- All utility runs checked against pedestrian routes, livestock areas, and emergency vehicle access lanes for conflicts
- Cable crossing points confirmed as protected with ramps or covers and marked on the plan
- Utility legend included on the exported plan with APWA color codes, symbols, and label conventions
- Bill of Quantities exported and cross-checked against vendor equipment submissions
How to Measure Success from Your Utility Plan
A well-documented utility plan produces measurable results before, during, and after the fair. Fewer site visits provide the first indicator, because contractors and vendors can read the plan remotely and arrive on site knowing exactly where their hook-up point sits. This clarity removes the back-and-forth that typically adds days to setup. Eagle Mountain City, a local government customer, cut event planning time by 70% from 8–10 hours down to a few hours per event by moving to a single, to-scale plan shared across departments.
Faster permit approvals follow from cleaner documentation. When the plan shows every utility type with its APWA color, symbol, label, and clearance zone, the reviewing authority has fewer questions and fewer reasons to request revisions. Accurate vendor counts provide the third marker, because the Bill of Quantities reflects exactly what appears on the map. Procurement orders for cable ramps, distribution boxes, water tanks, and grease traps then match actual need rather than rough estimates.
Frequently Asked Questions
How far in advance should utility locations be documented on a county fair site plan?
Document utility locations as early as the initial site layout phase, typically 60 to 90 days before the event, or earlier if your county requires permit submission well in advance. Early documentation gives contractors time to confirm connection feasibility, gives vendors time to submit accurate equipment lists, and gives your local authority time to review and approve the plan without rushing. For multi-day fairs with complex electrical or water infrastructure, starting the utility plan 90 to 120 days out is a reasonable target. Requirements vary by jurisdiction, so confirm your local permit submission deadlines with your county’s building department and fire marshal.
What symbols should be used for electrical, water, sewer, and gas on temporary event plans?
Follow the APWA Uniform Color Code introduced in Step 3. Pair each color with a line style and icon drawn from the US National CAD Standard v6, such as a solid line with a meter icon for water, a dashed line with a manhole icon for sewer, and a generator symbol with red distribution lines for temporary power. Always include a legend on the exported plan that defines every color, line style, and icon used, so contractors and inspectors can read the plan without prior knowledge of your internal conventions.
How do accurate utility maps affect permitting timelines and safety compliance?
Accurate utility maps reduce the number of revision cycles in the permit review process. When a plan clearly shows utility types, connection points, clearance zones, and cable protection measures, the reviewing authority can assess compliance in a single review rather than requesting additional information. From a safety standpoint, documented utility locations allow contractors to take appropriate precautions during setup, reduce the risk of cable strikes or water line damage, and give emergency responders a clear picture of where shutoffs are located. Inaccurate or incomplete utility documentation often causes setup delays, failed inspections, and on-site incidents, all of which you can avoid with a repeatable planning process.
How can small county fairs scale utility planning for multi-day events?
Small teams can scale by building a reusable base plan that captures all permanent fairground utility infrastructure such as pedestals, water meters, sewer cleanouts, and transformer locations, then layering temporary assets on top for each event. Once the base is accurate and to scale, adding generators, water tanks, and distribution boxes for a specific fair takes a fraction of the original setup time. OnePlan supports this workflow directly. Drag and drop objects onto a live satellite map, export the Bill of Quantities for each event’s specific vendor mix, and reuse the base plan year after year. Small teams have reported planning four times faster using OnePlan compared to their previous tools, with vendor communication significantly easier when everyone works from the same visual plan.
Conclusion: Turn Your Utility Map into a Repeatable Fair Template
Accurate county fair utility locations on a site plan form the foundation of a safe, compliant, and smoothly run event. The five-step process above gives any county events coordinator a repeatable method. Gather existing drawings and verify them on site, decide on temporary versus permanent service, place and label every utility type using APWA color codes and standard symbols, check for conflicts with pedestrian routes, livestock areas, and emergency access, and export a permit-ready plan with a Bill of Quantities that contractors and vendors can use immediately.
OnePlan has powered more than 200,000 events in 150 countries, from small community fairs to the Paris 2024 Olympic Games, by making this five-step process visual and repeatable. Your first event is free, and every subsequent fair builds on the same base plan, so you avoid starting from scratch each year and keep improving your layout over time.