Emergency calls
- Burst supply lines and flooding restrooms
- Sewer backups through floor drains
- No hot water in a kitchen during service
- Gas smell near equipment: SoCalGas first at 1-800-427-2200
- See 24/7 emergency plumber
ZIP 92708
Commercial plumber for the Southpark business district
Southpark is Fountain Valley's 126-acre office, research and light industrial district along Euclid St between Slater Ave and Talbert Ave. We handle the plumbing that keeps its buildings open: restrooms, water heaters, backflow assemblies, grease lines and after-hours emergencies.
Call (657) 669-4766Request service
Written and fact-checked by John, editor, MBA in marketing
Updated against City, utility and state sources
Quick answer
Southpark plumbing is commercial plumbing: high-use office restrooms, commercial water heaters, backflow assemblies that the City requires to be tested by a county certified tester, grease interceptors for food service under the City's grease ordinance, and sewer and drain work in light industrial buildings. We schedule around business hours and answer after-hours calls. Call (657) 669-4766.
- Size
- 126 acres in six planning areas
- Location
- Euclid St at Slater, Grace, Southpark and Talbert
- Uses
- Offices, R&D, light industrial, warehousing
- Grease service
- Typically 4 times a year, per City
Southpark at a glance
Southpark is a business district governed by its own City specific plan, the Southpark Specific Plan, in the eastern part of Fountain Valley.
- Location
- The City's 2019 General Plan site tour placed Southpark at Euclid St and its intersections with Talbert Ave, Southpark Ave, Grace Ave and Slater Ave. The specific plan also names Newhope St and notes parking areas next to the Santa Ana River. The exact boundary is on the plan's exhibit map; for any address question, ask the City.
- Size
- 126 acres in six planning areas, A through F, with room for about 2.38 million square feet of non-residential space under the plan
- Plan history
- Amended April 4, 1995 (Resolution 8638), again in 2005 and 2007, and most recently by Ordinance 1619 on February 4, 2025
- Permitted uses
- Professional and business offices, research and development, government facilities, retail within centers and office buildings, service industries, light manufacturing, warehousing, storage and distribution. Restaurants need a conditional use permit.
- Housing
- The plan as amended allows up to 1,100 residential units, stand-alone or mixed use, across Areas A, B and C
- Water and sewer
- Water from the City of Fountain Valley; sewer through City lines and the Orange County Sanitation District (OC San)
- Nearby
- Hyundai Motor America's headquarters at 10550 Talbert Ave, Kingston Technology's global headquarters at 17600 Newhope St, and the Shoppes at Costco Plaza at Talbert Ave and Newhope St
Who works in and around Southpark
Southpark and the streets around it hold some of Fountain Valley's biggest employers, which makes this the city's main commercial plumbing territory.
Wikipedia describes Southpark as a commercial center near the Santa Ana River with offices for companies including D-Link, Starbucks, Satura and the Orange County Register, plus a limited number of light industrial companies. Listings like that change as leases turn over, so treat it as a picture of the district's mix rather than a current tenant roster.
Two corporate headquarters sit on the district's main streets. Hyundai Motor America lists its headquarters at 10550 Talbert Ave. Architecture firm Gensler describes the campus as about 18 acres, with open offices, a showroom, an automotive tech center and a parking structure. The City's economic profile lists Hyundai at about 1,400 employees as it expands its headquarters. Kingston Technology's global headquarters is at 17600 Newhope St, and the City lists Kingston at 807 employees. We do not claim either company as a customer; we name them because they show the scale of buildings in this part of town.
The Orange County Sanitation District's administrative offices and primary treatment plant are also in Fountain Valley, next to the Santa Ana River. OC San's offices are at 18480 Bandilier Circle.
Southpark building types and their plumbing
Each kind of Southpark building has its own plumbing load, and the problems follow the use.
| Building type | Typical plumbing | Common calls |
|---|---|---|
| Multi-tenant office | Restroom cores, break rooms, drinking fountains, small water heaters | Flush valve failures, clogged urinals, leaking supply stops, no hot water at break rooms |
| Corporate campus | Large restroom groups, commercial water heaters, cafeterias, site irrigation | Water heater replacement, grease line jetting, backflow testing and repair |
| Research and development | Lab sinks, eyewash and safety showers, process water lines | Tempered water at safety fixtures, trap issues, backflow on process connections |
| Light industrial and warehouse | Restrooms, mop sinks, floor drains, hose bibs, yard hydrants | Floor drain backups, broken hose bibs, long building sewer runs |
| Retail and food service | Kitchen sinks, floor sinks, grease interceptors, high-demand hot water | Grease blockages, interceptor problems, water heater recovery |
Our commercial plumbing page covers the full list of services. This page focuses on what we see in Southpark specifically.
Office restrooms: flush valves, urinals and supply stops
The most common Southpark call is a restroom problem in a busy office building, because commercial restrooms get hundreds of uses a day and one stuck valve can close a whole room.
- Flush valves that run or will not flush. Commercial toilets and urinals usually use flush valves rather than tanks. Worn diaphragms and sensors cause constant running or weak flushes. Constant running wastes water fast; EPA WaterSense notes that a faucet dripping once per second wastes more than 3,000 gallons a year, and a running valve is far worse.
- Urinal line build-up. Urinal drains collect scale and uric deposits that narrow the pipe. Fountain Valley's water averaged about 13 grains per gallon of hardness in 2025, which adds mineral scale to the mix.
- Supply stops and faucets. Sensor faucets, mixing valves and angle stops wear out in heavy use.
- Shared drain lines. In a restroom core, several fixtures share one drain. A clog downstream backs up the lowest fixture first, often a floor drain.
We work with property managers to schedule repairs before or after business hours when a restroom has to close. For fixture work in general, see toilets, faucets and fixtures.
Commercial water heaters in Southpark buildings
Southpark buildings use everything from small point-of-use heaters under break room sinks to large commercial tank and tankless systems serving kitchens and locker rooms. The right fix depends on the demand pattern, not just the size of the old unit.
Hard water matters here as much as it does at home. In 2025, City of Fountain Valley water was 100% groundwater from the Orange County Groundwater Basin managed by the Orange County Water District, averaging about 13 grains per gallon. Scale collects in tank bottoms and in tankless heat exchangers, which is why descaling and flushing schedules matter for commercial heaters. Our water hardness guide has the City's numbers.
Replacement work needs a permit. The City's Building Division requires a permit before installing, altering, repairing or replacing a plumbing system, and its handouts include a water heater handout. California also requires water heaters to be braced or strapped against earthquake movement. We pull permits, coordinate inspections and plan the swap so the building is without hot water for as short a time as possible. See water heater repair and tankless water heaters.
Backflow testing and repair in Southpark
Backflow assemblies keep water from a building's system from flowing back into the City's drinking water, and the City tracks their testing.
The City of Fountain Valley and the Orange County Health Care Agency run a cross connection control program. Under Fountain Valley Municipal Code Section 14.17 and California Administrative Code Title 17, businesses and some residential properties may be subject to a backflow device. In a district like Southpark, assemblies are common on domestic water services, fire lines, irrigation and process connections in labs and light industrial spaces.
Watch for the City notice
The City tracks backflow devices in its cross connection program. Keep the notice and the device location handy.
Use a certified tester
Testing must be done by an Orange County Health Care Agency certified tester who is licensed to do business in Fountain Valley. The City publishes a list of approved testers.
Repair if it fails
A failed test usually means worn checks, springs or relief valves. Rebuilding or replacing the assembly is plumbing work, and a permit may apply to a replacement.
Return the form
The completed test form goes to the Public Works and Field Services Division at 17300 Mt. Herrmann St, Fountain Valley, CA 92708, or by email to xconnect@fountainvalley.org.
Questions
The City's Water Quality Technician answers backflow questions at 714-593-4624.
Grease interceptors and the City grease ordinance
Any Southpark kitchen that makes fats, oils and grease (FOG) is covered by Fountain Valley's grease ordinance, and the City inspects food service establishments.
The Southpark plan allows restaurants with a conditional use permit, and corporate campuses often have cafeterias. That puts grease control squarely on the list for building owners and tenants here. The City's grease ordinance page lays out the rules:
| Rule | What the City says |
|---|---|
| When an interceptor is required | New construction, remodels or operational changes, and facilities with a sewage spill since May 20, 2001 |
| Occupancy | No Certificate of Use and Occupancy until a required grease control device is installed, inspected and approved |
| Minimum size | 750 gallons |
| Service frequency | Typically 4 times a year, depending on the type and volume of food preparation |
| Who services it | A licensed liquid waste hauling company |
| Records | Keep manifests, receipts and invoices for at least 2 years |
| Kitchen fixtures | Food screens on all kitchen sinks and floor drains; food grinders prohibited at new food facilities |
| Staff training | Train back-of-house staff every 6 months, keep a signed training log, post "NO GREASE" signs |
A licensed hauler pumps the interceptor. Our part is the plumbing around it: jetting the grease line from the kitchen to the interceptor, clearing floor sinks, fixing broken baffles or outlet tees, and camera inspection of the line to the sewer. Grease that gets past a neglected interceptor can block the building sewer and, in the worst case, cause a spill into the street. See drain cleaning and hydro jetting.
Building sewers, floor drains and spills
A Southpark building's private sewer runs from the building to the public main, and the owner is responsible for it, including the part under the sidewalk and street. The City's sewer guidance spells that out for all property owners.
Large single-story warehouse and industrial buildings often have long building sewers and many floor drains. Floor drains dry out if nothing runs into them, which lets sewer gas into the building. Trap primers or a scheduled bucket of water fix that. Blockages in long runs need a camera to find, and older lines can have the same cracks, offsets and root problems as homes. See sewer line camera and repair.
If sewage overflows from a cleanout or manhole, the City's guidance is to stop water use, have a plumber clear the blockage, keep people away and keep sewage out of storm drains with sandbags or other barriers when it is safe. Report spills to the Orange County 24-hour hotline at 1-877-89-SPILL (1-877-897-7455). For spills from OC San's regional sewers, OC San's Plant No. 1 Control Center in Fountain Valley takes calls 24/7 at (714) 593-7025.
After-hours and scheduled commercial work
Southpark buildings are busiest during the work week, so a lot of our work there happens early, late or on weekends. We answer the phone 24/7, give a written price before work starts, and give an honest arrival window rather than a promise.
Planned work
- Backflow testing and assembly rebuilds
- Grease line jetting on a set schedule
- Water heater replacement with permit
- Restroom fixture upgrades during tenant improvements
- Camera inspections before a lease or purchase
Checklist for Southpark property managers
- Keep a map of main water shutoffs, backflow assemblies, cleanouts and the grease interceptor for each building.
- Track backflow test dates and keep copies of every test form returned to the City.
- Keep grease interceptor manifests for at least 2 years, as the City requires.
- Put floor drains that rarely see water on a monthly fill schedule or add trap primers.
- Set a descaling schedule for tankless heaters and a flushing schedule for tank heaters, given 13-grain water.
- Ask every plumbing contractor for a California C-36 license number and check it with the CSLB. Our license check guide shows how.
- Confirm permits for water heater replacements, repipes and sewer work with the Building Division at 714-593-4429.
Southpark utility contacts
Southpark is on City of Fountain Valley water, and its sewage goes through City lines to OC San.
| Issue | Who handles it | Number |
|---|---|---|
| Water service, meters, leaks in the street | City Water Services | (714) 593-4420 |
| Water or public works emergency after hours | City after-hours line | (714) 593-4485 |
| Backflow questions | City Water Quality Technician | 714-593-4624 |
| Sewer or grease spill | Orange County 24-hour hotline | 1-877-89-SPILL |
| Regional sewer spill | OC San Control Center, Plant No. 1 | (714) 593-7025 |
| Permits | Building Division, City Hall, 10200 Slater Ave | 714-593-4429 |
| Plumbing inside your building or private sewer | A licensed plumber | (657) 669-4766 |
The full list is in our who to call guide. For homes just south of Talbert Ave, see South Fountain Valley; for the residential side east of Brookhurst St, see East Fountain Valley.
Water where it shouldn't be? Call now.
A real person answers 24 hours a day. You get an honest arrival window and a written price before any work starts.
Questions Fountain Valley homeowners ask
Where is the Southpark district in Fountain Valley?
Southpark is a 126-acre business district along Euclid St, around its intersections with Slater Ave, Grace Ave, Southpark Ave and Talbert Ave, near the Santa Ana River side of the city. The exact boundary is on the City's Southpark Specific Plan map.
Do businesses in Fountain Valley need backflow testing?
Many do. The City says businesses and some residential properties may be subject to a backflow device. Tests must be done by an Orange County Health Care Agency certified tester licensed in Fountain Valley, and forms go back to Field Services.
How often does a grease interceptor need service in Fountain Valley?
The City says typically 4 times a year, depending on the type and volume of food preparation. A licensed liquid waste hauler does the pumping, and records must be kept for at least 2 years.
Can you fix office restrooms after hours?
Yes. We schedule restroom repairs, flush valve rebuilds and fixture work before or after business hours when a room has to close, and we answer emergency calls 24/7.
Who is responsible for a business's sewer line to the street?
The property owner. The City says owners maintain the private lateral from the building to the public main, including the part under the sidewalk and street.
What should I do if sewage overflows at my building?
Stop water use, keep people away and block any flow toward storm drains if it is safe. Then call a plumber to clear the line and report the spill to the county hotline at 1-877-89-SPILL.
Do commercial water heaters need a permit in Fountain Valley?
Yes. The Building Division requires a permit before replacing or altering plumbing, including water heaters. We pull the permit and schedule the inspection.
Do you work on Southpark light industrial buildings?
Yes. We handle floor drains, long building sewers, hose bibs, restrooms and water heaters in warehouse and light industrial spaces. See commercial plumbing.
Sources
Facts on this page come from these public sources, checked October 31, 2026.
- City of Fountain Valley: Southpark Specific Plan
- City of Fountain Valley: 2019 General Plan opportunity sites tour map
- City of Fountain Valley: economic profile
- Fountain Valley, California (Wikipedia)
- Winmo: Hyundai Motor America company address
- Gensler: Hyundai Motor America U.S. headquarters
- Kingston Technology: about Kingston
- OC San: contact us
- OC San: report a problem
- City of Fountain Valley: backflow testing
- City of Fountain Valley: grease ordinance
- City of Fountain Valley: sewer lateral and spill guidance
- City of Fountain Valley 2026 Consumer Confidence Report (2025 data)
- City of Fountain Valley: Building Division
- City of Fountain Valley: permit handouts
- City of Fountain Valley: household utilities
- EPA WaterSense: Fix a Leak Week
- SoCalGas: gas leak safety
- CSLB: Check a License