A backed-up drain or a split supply line in Seaside does not wait for business hours. Our emergency plumber service for Seaside, CA 93955 runs on a 24/7 line from our Marina base, so you can call at 2 a.m. or on a holiday. Dial (855) 575-2890, then shut off the water at the main valve or the fixture and stop using any drain that is gurgling.
This page explains how Seaside's housing, water supply and sewer setup shape the calls we take, and which agency owns which pipe. We offer same-day appointments when available, and you get a clear price before work starts.
Seaside plumbing problems that cannot wait
People in Seaside call at odd hours for a short list of reasons. A toilet overflows, a water heater leaks into a closet, or a kitchen line backs up with guests in the house. Each gets worse every hour, so the first ten minutes matter.
| Situation | Common cause | First move while you wait |
|---|---|---|
| Water running from a ceiling or wall | Failed supply line or fitting | Close the main valve, then switch off power to wet rooms |
| Several drains slow or gurgling together | Blockage in the main drain or lateral | Stop using water, do not run the dishwasher or washer |
| Water heater leaking at the base | Corroded tank or failed valve | Shut the cold supply to the heater and turn off its power or gas control |
| Toilet overflowing | Blocked trap or drain behind it | Lift the tank lid, close the flapper and shut the stop valve |
Smell gas? Leave first
If you smell gas or hear hissing, get everyone outside, call 911 from a safe distance, and then call your gas utility. Do not flip switches or use a phone inside. Plumbing calls come after the gas utility clears the house.
For a clogged line, our drain cleaning service starts with finding where the blockage sits, since a sink trap and a main line need very different tools. For a failing tank, see our water heater repair page for what can be saved and what cannot.
Older Seaside homes and what age does to pipes
Seaside's own housing plan, a 2020 draft filed with the state, says about 77 percent of the city's housing stock was built before 1980. The draft prints no data year, so treat it as a rough picture rather than an exact count. For a homeowner it means many houses here have plumbing that is decades old, and older pipe is where slow leaks and slow drains tend to start.
The same document notes that Seaside produced a significant amount of low-cost housing for military personnel, and that the base grew from 1968 to 1978. Fort Ord was officially closed in September 1994, according to the US EPA. Homes built in different waves can use different pipe materials, so two neighbors on one block may have very different plumbing. We look at your pipes rather than guess from the street.
If any of this sounds familiar, a leak detection visit finds the wet spot without opening every wall. When a pipe has simply worn out, we explain whether a patch or a repiping job makes more sense, and the price comes first.
Three water providers, one city
Seaside does not have a single water company. According to the City of Seaside, three providers serve it, and which one bills you depends on where your address falls. That matters because water quality, meter ownership and the number to call in a main break all differ by provider.
| Provider | Where, per the City | Hardness facts we can verify |
|---|---|---|
| Marina Coast Water District | Northern areas, north of Military Avenue | System-wide 2025 average 10.54 grains per gallon (180.3 mg/L), range about 4.9 to 19.3 gpg |
| Seaside Municipal Water System | A section of the easterly area | No current figure available to us, so ask the city |
| California American Water | The remaining areas | Monterey system report on 2023 testing: average about 10 gpg, range 5 to 15 |
The Marina Coast Water District figure covers its whole system, including Marina and the former Fort Ord, not Seaside alone. Hard water leaves scale inside water heaters and on faucet screens, and the district recommends flushing a heater regularly.
Check your water bill for the provider name and tell us when you call. Under the district's code, the service connection and meter belong to the district and the customer handles pipes beyond the meter. That rule is the district's, so ask the city or Cal Am about theirs. A water service line repair call needs that answer first.
Sewer backups and who owns which pipe
Seaside's sewer collection is managed locally, and treatment happens at Monterey One Water. Marina Coast Water District also provides sewer service to part of the city. When a backup reaches your floor drain, the first job is working out whether the blockage is in your lateral or in the street main.
Marina Coast Water District lists several drains backing up at once as a warning sign of a larger problem. Under its code, the owner maintains the side sewer from the house to the main. In other sewer areas, call the city to confirm where your responsibility ends.
Depending on what the camera shows, the answer may be routine sewer line cleaning or a section that needs sewer line repair. We explain both options and the trade-offs before work begins.
Renters, owners and who to call first
Census figures for 2020 to 2024 show 35.4 percent of Seaside homes are owner-occupied, across about 10,371 households. That leaves roughly two in three households renting. So many of our calls here start with a tenant standing in a wet kitchen who does not own the building.
If you rent, stop the water first, then tell your landlord or property manager. Give us their contact details and we explain the problem and the price to the person who approves the repair. Our commercial plumbing work covers small shops and offices too.
Streets and landmarks that help us find you
Seaside City Hall sits at 440 Harcourt Avenue. Laguna Grande Regional Park lies partly in Seaside and partly in Monterey, with Canyon Del Rey Boulevard between it and the nearby neighborhoods. The city's plans also name the Fremont Boulevard and Broadway corridors. A nearby cross street or landmark speeds up dispatch.
Callers sometimes mix up Cal State Monterey Bay. Its mailing address uses Seaside, but the physical campus address is in Marina, and the grounds span Marina, Seaside and county land. Give us the building and street address, not just the university name.
ZIP 93955 and the neighbors around it
Seaside's main ZIP code is 93955, and Sand City shares it. Del Rey Oaks and Monterey sit just beyond Seaside's southern and western edges. We list these places so you know what we recognize, not as a promise of coverage at every address. Call and we will confirm whether we can dispatch to yours.
If you live north of Marina, see the page for Castroville. The full list of towns is on the service areas page.
Frequently asked questions
Yes. Our line is open 24 hours a day, 7 days a week, including nights and holidays. We offer same-day appointments when available, and we give a clear price before work starts. Call (855) 575-2890 and describe what is happening so we can tell you what to shut off first.
Seaside's main ZIP is 93955, and that is the one we list on this page. If your address uses a different ZIP, such as a mailing address near the university, call us with the street address. We confirm coverage by location, not by ZIP alone.
The City of Seaside lists three providers. Marina Coast Water District serves areas north of Military Avenue, Seaside Municipal Water System serves a section of the easterly area, and California American Water serves the rest. Your water bill names yours.
Stop running water in the house and keep the lid down on affected toilets. Call us right away. If you can reach a cleanout outside, tell us where it is, since that often speeds up the work.
Shut off the water first, because that is always yours to do. For the repair itself, the property owner or manager normally has to approve it. Give us their contact and we explain the problem and price to them.
These places sit next to Seaside. Call with your address and we will tell you whether we can dispatch there. We do not list drive times, because traffic on Highway 1 changes them.
