Flagstaff, Coconino County, Arizona
Before You Hire a Plumber Flagstaff AZ Homeowners Should Check Whether the City Will Pay
Most cities offer a rebate. You hire a plumber, you pay the plumber, you post a receipt, and some months later part of your money comes back. Flagstaff runs something different, and it is worth checking against before you book anything.
Through a Community Development Block Grant from the US Department of Housing and Urban Development, the city Water Conservation programme provides free leak repair and water-efficient upgrades to qualified applicants. Not a discount on your plumber. The city states that all repairs, upgrades and installations are performed by plumbers who were pre-selected in a procurement process.
The Programme, and Its Three Gates
Who Qualifies for Free Leak Repair, and What Gets Done
The city publishes three criteria and all three have to be satisfied. You must currently own a home in the City of Flagstaff. You must earn a fixed income at 80 per cent of the Area Median Income or lower. And your home cannot be located in a flood zone. That third gate catches people out, because it has nothing to do with income and everything to do with where the house sits.
- Indoor leak repairs
- Outdoor leak repairs
- Faucet upgrades
- Toilet upgrades
- Shower head upgrades
- Dishwasher upgrades
- Washing machine upgrades
- Pressure reducing valves, which is an unusually specific thing for a conservation programme to fund and a genuinely useful one
The income limits are published as a table and the city notes that income will need to be verified. These are the 80 per cent Area Median Income figures against household size.
| Household size | 80 per cent AMI limit | Household size | 80 per cent AMI limit |
|---|---|---|---|
| 1 | $62,750 | 5 | $96,800 |
| 2 | $71,700 | 6 | $103,950 |
| 3 | $80,650 | 7 | $111,150 |
| 4 | $89,600 | 8 | $118,300 |
Applications go through Water Conservation on 928-213-2116, or by form. The programme office is at 2323 N Walgreens Street, Suite 1, Flagstaff, Arizona 86004. Its published hours are a small local detail worth noticing on their own: Monday to Friday, 7 a.m. to 4 p.m. in summer and 8 a.m. to 5 p.m. in winter.
Before You Buy Any of It
A Giveaway List With Freeze Protection On It
Separately from the income-qualified programme, and open to any city water customer, Water Conservation hands out a list of items free on request. High efficiency WaterSense aerators and shower heads, in what the city describes as a variety of sizes and styles to suit preference. Shower timers. Shower shut-off valves. Home efficiency check-up kits. Moisture meters. Hose nozzles.
And outdoor insulation covers. That last item is the one that tells you where you are. A water conservation giveaway list in most of Arizona is about heat and evaporation. Here, the same list includes protection against the other end of the thermometer, which is a reasonable summary of what makes plumbing in this city different from plumbing in the rest of the state.
There is also a rainwater harvesting rebate with two tiers. A tank of 1,000 gallon capacity or more earns up to 50 per cent of the tank cost, to a maximum of $1,000. A small rain barrel earns up to $50 back, and that can cover the barrel, the downspout connector or the leaf catcher. You have to be a City of Flagstaff Water Services customer for either.
The Rule That Comes From the Altitude
A Backflow Assembly Here Has to Sit in a Heated Enclosure
This is not general advice about cold weather. It is a construction requirement with a code number attached. The city states that the preferred method for backflow prevention device installation is outside, as close to the meter as possible, and with a heated enclosure for freeze protection, citing City Code 7-03-001-0015. The same requirement is repeated in the assembly section: as close as possible to the water meter service connection, with a heated enclosure, remaining on private property.
Who needs one at all is narrower than people expect. Residents and businesses with a potential for contamination of the water distribution system are required to install backflow assemblies, and single family residences used solely for residential purposes are exempt from the assembly requirement. Where an assembly is required, it must be tested annually, only approved assemblies are permitted, and the owner is solely responsible for keeping it in satisfactory operating condition.
Two details are easy to get wrong. The city sends a courtesy notice when annual testing is due, but it is a courtesy, and the duty to schedule the test sits with the owner. And if any repair or maintenance work is performed on an assembly, a certified tester must retest it immediately and submit the results, which means a repair visit is not finished when the wrench goes down.
Variances, Removals and Where Results Go
The Paperwork Around a Flagstaff Backflow Assembly
An indoor installation is possible but it is a variance, not a choice. The city requires approval before construction, and where the Industrial Waste Program has determined an assembly may go somewhere other than just downstream of the water meter, a Hold Harmless Agreement has to be submitted. That conversation goes to the Cross Connection Control Program on 928-213-2475 before anything is fitted rather than after.
Removal is tighter still. Before removing or disconnecting a backflow device you must receive prior approval from the Cross-Connection Program supervisor, in compliance with City Code 7-03-001-0015, subsections F.11 and J.5. The published route is an email to pretreatment@flagstaffaz.gov with your name and address, or a call to 928-213-2475.
Test results do not go to the city directly. Certified testers file them through BSI Online on 888-966-6050, and an assembly owner looking for a certified tester uses the same number, or looks companies up online using a customer confirmation number. Residents can also apply for an exemption from the annual fire sprinkler backflow testing requirement using a Residential Fire Sprinkler Waiver. The Regulatory Compliance team publishes hours of Monday to Friday, 7 a.m. to 4 p.m., with Monique Belanger as Industrial Pretreatment Supervisor on 928-213-2479 and Glenn Kuyper as Industrial Pretreatment Inspector.
The Inventory, and a Clear Result So Far
Thirty Years of Lead Sampling, Published in One Table
Under the EPA Lead and Copper Rule Improvements, in force since 8 October 2024, every community water system in the country has to inventory its service lines and determine what they are made of. Flagstaff publishes where it has got to. As at November 2025, 70 per cent of all Flagstaff water service lines have been fully identified and none have been found to contain lead.
It also publishes the sampling history behind that statement, which most utilities do not. The city is on reduced monitoring and samples every three years at 30 residences. Its ninetieth percentile results run 3.7 parts per billion in 1992, 3 in 1993, under 5 in 1994, 1995 and 1998, then 2.2 in 2001, 2.5 in 2004, 3 in 2007, 3.2 in 2011, 2.7 in 2014, 2.1 in 2017, 2 in 2020 and 3.6 in 2023. The action level under the current rule is 10 parts per billion.
The notice process is worth knowing because a letter arriving in November is not necessarily bad news. Notices go out annually in the first week of November and only for two reasons: the line is recorded as unknown, usually because the city could not access it, for instance where it is buried on private property, or the line has been identified as galvanized. If your line has been identified and needs no action, you get nothing at all. Customers with an unknown line can self-report the material through a city form, and the public portal is hosted by 120Water in partnership with the Arizona Department of Environmental Quality.
Two Deadlines and One Rebate Ceiling
Galvanized by 2037, and a Toilet Standard Stricter Than Florida
Where a service line is identified as galvanized, the city explains why that matters even without lead being present: the material could have potentially absorbed lead if a lead pipe was present in the past. And it states a deadline. Flagstaff Water Services is required to replace all galvanized service lines by 2037, as directed by the EPA rule. If your November notice says galvanized, that is the clock you are on.
On the fixture side, the Flagstaff toilet rebate sets a ceiling that is worth comparing across the country. An eligible toilet must be EPA WaterSense certified with an effective flush volume of no more than 1.1 gallons, and it must replace an existing toilet with a higher flush volume. Dual flush models are eligible, and the city publishes the arithmetic: average three flushes, two low and one high. For comparison, West Palm Beach in Florida sets its equivalent ceiling at 1.28 gallons per flush. A fixture that qualifies for a credit there does not automatically qualify here, which is a good reason to check the number before the box is opened.
- Confirm eligibility before you buy
The city maintains a list of eligible toilets and invites customers uncertain about a model to email staff, who will confirm whether it is covered before the purchase is made. You must be a current City of Flagstaff water utility customer.
- Photograph the old toilet where it stands
Clearly labelled photos of the old and the new toilet are required, preferably in their installed locations.
- Photograph the proof of the old flush volume
Either the date stamp inside the tank of the old toilet, or the printed gallons per flush figure on the outside porcelain near the seat cover. This is the evidence that the new fixture is actually an improvement, which is the whole basis of the rebate.
- Keep a legible receipt
Submit legible receipts alongside the photos.
- Complete, sign and date the form
Forms must be filled out completely, signed and dated, and the city accepts electronic signatures.
- Send it in, and do not wait
Materials go by email or by post to the Water Conservation Program at 2323 N Walgreens Street, Suite 1. All rebates are on a first come, first served basis.
Grease, and a Disposal Route Nowhere Else Has
Car Wash and Laundry Lint Waste Needs a Letter Before It Moves
Approved grease interceptors are installed in all food producing facilities in Flagstaff to capture fats, oils and grease before they reach the public sewer, and Industrial Pretreatment monitors food service establishments to make sure they are being managed. The programme uses SwiftComply as its management database, with food service establishments registering online and grease pump-out service providers registering by email.
The unusual part is what else the city will take. The Wildcat Hill Water Reclamation Plant accepts car wash interceptor wastewater and solids, and laundry lint interceptor waste, at its drying beds. But there is a gate in front of it. The interceptor must be inspected by the Industrial Pretreatment Program before the material is pumped out, and if the material is acceptable the programme generates an acceptance letter that the owner shows to plant staff on delivery. The city states plainly that no waste can be accepted without the inspection and approval letter.
If you operate a car wash or a laundry here, that sequence is worth building into the maintenance schedule rather than discovering on the day a truck is turned away. Inspections are booked on 928-213-2475. The city publishes a grease interceptor sizing worksheet, a waiver, an alternate interceptor request and an alternate maintenance approval request, none of which was opened for this page, so no sizing figure appears anywhere on it.
What We Do Here
Plumbing Work in a City Where the Cold Is Written Into the Code
Leak detection comes first on this page because the city itself will fund the repair for qualifying households, and because it hands out moisture meters and efficiency check-up kits to anyone who asks. Finding the leak is the step nothing else can skip.
Burst pipe repair and repiping answer supply pipework that has failed, which in a city that requires a heated enclosure around an outdoor assembly is not a hypothetical risk. Fixture repair covers the visible end including the toilet swaps the rebate pays toward.
Sewer line repair and drain cleaning answer the blocked line, hydro jetting answers a pipe narrowed along its length by the fats the grease programme exists to intercept, water heater repair covers tank and tankless work, commercial plumbing covers the food service, car wash and laundry sites the pretreatment programme regulates, and emergency plumbing covers the first hour. We publish no response time for Flagstaff.
Elsewhere in Arizona we cover Phoenix and Scottsdale in the valley, and Kingman to the west, none of which shares this city climate or its code requirements.
Where We Work
Flagstaff Neighbourhoods and Nearby Communities
These are the areas people give us when they book. Note that some of them, including Kachina Village, Doney Park and Timberline, sit outside the City of Flagstaff itself in Coconino County, which means the city programmes described on this page, including the free leak repair assistance and the rebates, do not necessarily reach them.
Flagstaff Plumbing Questions, Answered Straight
A city that sends a plumber rather than a cheque, a code that puts your backflow assembly in a heated box, thirty years of lead data, and a 2037 deadline on galvanized pipe.
For income-qualified homeowners, yes, and it goes further than a rebate. Funded by a Community Development Block Grant from the US Department of Housing and Urban Development, the city Water Conservation programme provides free leak repair and water-efficient upgrades to qualified applicants, and states that all repairs, upgrades and installations are performed by plumbers who were pre-selected in a procurement process. You do not pay and then claim. The city arranges the work.
Three conditions, and all three have to be met. You must currently own a home in the City of Flagstaff. You must earn a fixed income at 80 per cent of the Area Median Income or lower, and the city says income will need to be verified. And your home cannot be located in a flood zone. The published 80 per cent limits run from $62,750 for a household of one up to $118,300 for a household of eight.
The city lists indoor and outdoor leak repairs, upgrades for faucets, toilets, shower heads, dishwashers and washing machines, and pressure reducing valves. That last item is the one worth flagging, because a pressure problem is one of the more expensive things a household can live with quietly and it is rarely on a conservation list at all.
Probably not. The city requires assemblies where there is a potential for contamination of the water distribution system, and states that single family residences used solely for residential purposes are exempt from the assembly requirement. Where an assembly is required, it must be tested annually, only approved assemblies are permitted, and the owner is solely responsible for keeping it in satisfactory operating condition at all times.
Because the city code says so. Flagstaff states that the preferred method for backflow prevention device installation is outside, as close to the meter as possible, and with a heated enclosure for freeze protection, citing City Code 7-03-001-0015. The requirement is repeated in the assembly guidance, which adds that it must remain on private property. An indoor installation is possible as a variance but requires city approval before construction and a Hold Harmless Agreement.
No. The city states that if any repair work or maintenance is performed on the assembly, a certified tester must retest the assembly immediately and submit the results. A repair visit is therefore not complete until the retest has been filed. Test results are submitted through BSI Online on 888-966-6050, and the same number will find you a certified tester if you do not have one.
Not without permission. Before removing or disconnecting a backflow device you must receive prior approval from the Cross-Connection Program supervisor, in compliance with City Code 7-03-001-0015 subsections F.11 and J.5. The published route is an email to the pretreatment mailbox with your name and address, or a call to 928-213-2475.
On the evidence the city publishes, so far no. As at November 2025 it reports that 70 per cent of all Flagstaff water service lines have been fully identified and none have been found to contain lead. That tracks with sampling data recorded every three years since the 1990s, with ninetieth percentile results ranging between about 2 and 3.7 parts per billion against an action level of 10. The city is on reduced monitoring and samples 30 residences every three years.
Notices go out annually in the first week of November and only for two reasons. Either the line is currently recorded as unknown, usually because the city could not access it, for instance where it is buried on private property, or the line has been identified as galvanized. If your line has been identified and no further action is needed, you will not receive a notice at all. Customers with an unknown line can self-report the material through the city form.
The city explains why galvanized matters even where no lead has been found, namely that the material could have potentially absorbed lead if a lead pipe was present in the past. And it publishes a deadline: Flagstaff Water Services is required to replace all galvanized service lines by 2037, as directed by the EPA Lead and Copper Rule Improvements.
An EPA WaterSense certified model with an effective flush volume of no more than 1.1 gallons, replacing an existing toilet with a higher flush volume. Dual flush toilets are eligible, and the city publishes how to work out the effective volume by averaging three flushes, two low and one high. That 1.1 gallon ceiling is stricter than several other cities, so do not assume a model that qualified somewhere else qualifies here. Staff will confirm a specific model by email before you buy.
Check the Free Route First
Plumber Flagstaff AZ Work Quoted After the Programmes, Not Before
The order of operations here is unusual and it saves people money. Before booking a leak repair, check whether the household qualifies for the city assistance programme, because if it does the work is arranged and paid for rather than discounted. Before buying a fixture, check the 1.1 gallon ceiling and ask staff to confirm the model. Before fitting a backflow assembly, confirm the enclosure requirement, because moving one afterwards is a variance conversation rather than a site decision.
Sources for the Community Development Block Grant funding, the three qualifying criteria, the eligible project list including pressure reducing valves, the statement that work is performed by plumbers pre-selected in a procurement process, the 80 per cent Area Median Income table and the programme address, phone number and seasonal hours: the City of Flagstaff Home Leak Repair and Upgrade Assistance page.
Sources for the heated enclosure requirement and City Code 7-03-001-0015, the single family residential exemption, the annual testing duty, the courtesy notice, the immediate retest after repair, the approved assemblies rule, the indoor variance and Hold Harmless Agreement, the removal approval requirement under subsections F.11 and J.5, the BSI Online filing and tester lookup route, the Residential Fire Sprinkler Waiver and the named pretreatment staff and their hours: the city Backflow Prevention and Cross Connection Control Program page.
Sources for the Lead and Copper Rule Improvements start date, the 10 parts per billion action level, the November 2025 progress statement, the full ninetieth percentile sampling history, the reduced monitoring and 30 residence sampling, the November notice timing and its two reasons, the self-reporting form, the 120Water and Arizona Department of Environmental Quality portal and the 2037 galvanized replacement deadline: the city Water Service Line Inventory page.
The toilet rebate criteria, the dual flush averaging method, the photographic evidence requirements, the free item list and the rainwater harvesting rebate tiers are from the Residential Rebate Programs page. The grease interceptor requirement, the SwiftComply database, and the Wildcat Hill Water Reclamation Plant acceptance letter procedure for car wash and laundry lint interceptor waste are from the Fats, Oils and Grease Program page.
No water, sewer or stormwater rate is quoted on this page. The city publishes a Water Services Rates page and a Water Rates Calculator, neither of which was opened. No toilet rebate amount is quoted because none appears on the page read. No grease interceptor sizing figure is quoted because the four published worksheets and requests were not opened.
No count of galvanized lines, no treatment plant capacity, no main mileage, no population, no elevation figure and no response time is given, because none was read on a city source. Arizona contractor licensing is administered by the Arizona State Legislature through Title 32 of the Arizona Revised Statutes. Codes, fees, rebates and programme funding change, so confirm current requirements with the City of Flagstaff Water Services before relying on anything above.