Plumbing repair · Fontana, California
Plumbing repair in Fontana, CA
Leak, backed-up drain, no hot water, or a frozen line? The largest share of Fontana's homes (24%) was built 1980 to 1989[1]. Request a licensed plumber who works here. Fontana, in San Bernardino County — ZIPs 92336, 92337, 92335, counts 221,223 residents (2025 estimate)[2].
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Fontana plumbing snapshot: the key figures
- Population (2025 est.)
- 221,223[2]+6.1% since 2020
- County
- San Bernardino[2]
- Land area
- 43.3 sq mi[3]
- Decade the most homes date from
- 1980 to 1989[1]24% of housing units
- Homes built before 1980
- 28%[1]the 7th-highest share of the 15 Inland Empire suburbs we cover
- Homes built 1980–1999
- 40%[1]2020–2024
- Homes built 2010 or later
- 11%[1]the 6th-highest share of the 15 Inland Empire suburbs we cover
- Flood & flash-flood reports within 10 mi
- 53[4]16 flash floods, 2016–2025; flood-prone homes need working drainage and backflow prevention
- FEMA flood-insurance claims, local ZIPs
- 23[5]1 in the last 10 years; 9 paid
- Homes on utility gas heat
- 74%[1]gas piping work usually needs a permit and a licensed installer
What the local data means for plumbing in Fontana
Fontana is one of the fastest-growing Inland Empire suburbs tracked here: 221,223 people (2025 estimate), up 6.1% since 2020[2]. The city spans 43.3 square miles at 5,111 residents per square mile (the 2nd densest) and sits entirely in San Bernardino County, served by ZIP codes 92336, 92337, 92335[3].
With 11% of homes built since 2010 and 28% before 1980[1], Fontana's plumbing runs from brand-new supply lines and fixtures to aging pipe, original valves and water heaters past their rated life.
Mail to Fontana goes through 3 ZIP codes — 92336 (44% of the city's land), 92337 (32% of the city's land), 92335 (22% of the city's land)[6].
The closest tracked neighbours are Rialto (4.2 mi E), Rancho Cucamonga (6.1 mi W) and Ontario (9.6 mi SW)[3].
28% of Fontana's 59,522 housing units predate 1980 and 11% went up in 2010 or later[1] — the 7th-highest pre-1980 share of the 15 Inland Empire suburbs we cover; nearby, Rialto (44%), Rancho Cucamonga (29%), and Ontario (50%) predate 1980. The 40% built in 1980–1999 are at the age where original water heaters and valves get replaced.
The biggest single slice — 24% — was built 1980 to 1989, and the median home dates to 1989[1]. Neighbours from the same era tend to hit the same plumbing problems at the same time.
Water from the sky is plumbing work too: 53 flood or flash-flood reports within 10 miles over 2016–2025[4], and FEMA logged 23 flood-insurance claims across Fontana's ZIPs[5]. Homes that take water need working drainage, sump pumps and backflow prevention.
74% of homes heat with utility gas, and 33% of households rent[1].
Measured against the 15 suburbs on this site, Fontana records the most flood reports nearby (53)[4].
Fontana storm calendar
Within 10 miles of Fontana, 2016–2025: 16 flash-flood reports and 37 flood or heavy-rain reports[4]. Peak: 62% in February, March, and November. Busiest year 2025 (12). Busiest month February 2025 (9). Latest: flash-flood report, Dec 24, 2025, 7.6 mi out.
| Month | Flash flood | Flood & heavy rain | All |
|---|---|---|---|
| Jan | 4 | 2 | 6 |
| Feb | 2 | 15 | 17 |
| Mar | 2 | 6 | 8 |
| May | – | 2 | 2 |
| Jul | – | 1 | 1 |
| Aug | 1 | 1 | 2 |
| Sep | 1 | 2 | 3 |
| Nov | 4 | 4 | 8 |
| Dec | 2 | 4 | 6 |
Finding plumbing help around Fontana
Plumbing repair contractors taking requests around Fontana cover ZIP codes 92336, 92337, 92335.
Before you call: before the plumber arrives
The data underneath this Fontana page
| Measure | Fontana | Median of 15 | Difference |
|---|---|---|---|
| Built before 1960 | 12.9% | 6.5% | 6 pts higher |
| Flood reports (10 mi) | 53 | 34 | 19 more |
| Built before 1980 | 28% | 25% | 4 pts higher |
| Built 2010 or later | 11% | 10% | 1 pts higher |
| Renter-occupied | 33% | 36% | 3 pts lower |
| Utility-gas heat | 74% | 76% | 1 pts lower |
| Median year built | 1989 | 1989 | same as median |
Sorted by largest difference. Each median is the middle value across the covered Inland Empire suburbs, from the same sources.
| City | Flood reports | NFIP claims |
|---|---|---|
| Fontana | 53 | 23 |
| Rialto 4.2 mi | 51 | 6 |
| Rancho Cucamonga 6.1 mi | 51 | 47 |
| Ontario 9.6 mi | 45 | 21 |
| Eastvale 12.2 mi | 46 | 29 |
| Chino 14.9 mi | 44 | 5 |
| ZIP | Claims | Paid | Busiest year |
|---|---|---|---|
| 92336 | 0 | $0 | — |
| 92337 | 4 | $95,975 | 2010 (2) |
| 92335 | 19 | $36,837 | 1980 (5) |
ZIPs extend past city limits.
| Date | Type | Distance |
|---|---|---|
| Dec 24, 2025 | Flash Flood | 7.6 mi |
| Nov 16, 2025 | Flood | 4.0 mi |
| Nov 15, 2025 | Heavy Rain | 7.4 mi |
| Feb 14, 2025 | Heavy Rain | 7.3 mi |
| Feb 14, 2025 | Heavy Rain | 6.8 mi |
| Feb 14, 2025 | Heavy Rain | 7.6 mi |
| Feb 13, 2025 | Heavy Rain | 8.4 mi |
| Feb 13, 2025 | Flood | 5.9 mi |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 2,301 | 3.9% | ±304 |
| 2010 to 2019 | 4,502 | 7.6% | ±504 |
| 2000 to 2009 | 12,249 | 20.6% | ±729 |
| 1990 to 1999 | 9,266 | 15.6% | ±695 |
| 1980 to 1989 | 14,452 | 24.3% | ±661 |
| 1970 to 1979 | 5,461 | 9.2% | ±584 |
| 1960 to 1969 | 3,591 | 6.0% | ±536 |
| 1950 to 1959 | 5,209 | 8.8% | ±528 |
| 1940 to 1949 | 1,630 | 2.7% | ±309 |
| 1939 or earlier | 861 | 1.4% | ±188 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 59,522 |
| Detached single-family | 45,602 (77%) |
| Occupied homes | 58,362 |
| Owner-occupied | 38,997 (67%) |
| Renter-occupied | 19,365 (33%) |
| Median home value | $586,800 |
ACS 2020–2024 estimates.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 43,454 | 74.5% | ±1,077 |
| Electricity | 11,932 | 20.4% | ±848 |
| No fuel used | 1,194 | 2.0% | ±227 |
| Solar energy | 1,050 | 1.8% | ±263 |
| Bottled or tank gas (propane, butane, etc.) | 578 | 1.0% | ±161 |
| Fuel oil, kerosene, etc. | 70 | 0.1% | ±54 |
| Wood | 56 | 0.1% | ±52 |
| Other fuel | 28 | 0.0% | ±27 |
| ZIP (ZCTA) | Share of Fontana's land | Share of the ZIP inside the city |
|---|---|---|
| 92336 | 44% | 96% |
| 92337 | 32% | 100% |
| 92335 | 22% | 53% |
plumbing questions from Fontana homeowners
Are Fontana homes likely to have old galvanized pipes?
Only an inspection can say, but age is the clue: 13% were built before 1960 and 28% before 1980[1].
Which ZIP codes are covered in Fontana?
92336, 92337, and 92335[6], in San Bernardino County. Nearby suburbs with their own pages: Rialto (4.2 mi), Rancho Cucamonga (6.1 mi), and Ontario (9.6 mi)[3].
Sources
- Census ACS 2020–2024 5-year (keyless bulk)
- Census population estimates, Vintage 2025
- Census Gazetteer 2025
- NOAA Storm Events Database
- OpenFEMA NFIP claims
- Census 2020 ZCTA–place file
Data pulled Sep 28, 2026. Full citations and method.