Summer in Los Angeles is hard on plumbing in ways most homeowners don’t think about until something goes wrong. Water usage goes up. Outdoor fixtures that sat idle all spring start getting daily use. Houseguests put more demand on showers, toilets, and drains. And the dry heat does something less visible but just as damaging: it dries out the soil around your underground pipes, causing it to shift and compact in ways that create real stress on sewer lines.
None of these are emergencies waiting to happen — unless they’re ignored. Here’s what Los Angeles homeowners in the A-1 service area should check and address during the summer months to avoid a larger problem later in the season.
1. Check Your Outdoor Faucets and Hose Bibs
Outdoor faucets see their heaviest use between July and September — filling pools and planters, watering landscaping, washing cars and driveways. This is also when small problems that went unnoticed during lighter use in spring become more apparent.
What to check:
- Turn each outdoor faucet fully on and off. A faucet that drips after shutoff or leaks at the base when running has a worn washer or packing nut that needs attention.
- Check hose connections for drips at the fitting. A slow drip at the hose bib can waste hundreds of gallons over a summer.
- Look for moisture, corrosion, or discoloration on the wall or siding behind the faucet, which can indicate a slow leak behind the wall from a damaged supply line.
In La Habra and Anaheim, where many properties have aging galvanized supply lines to outdoor faucets, a dripping hose bib is sometimes the first symptom of a line that’s corroding from the inside out.
2. Watch Your Water Pressure
Water demand in LA increases across the region during summer months. City water pressure can fluctuate as the distribution system handles higher seasonal loads. If you notice pressure that’s lower than usual at your indoor fixtures, there are a few possible explanations:
- Regional demand: Temporary and usually self-correcting. If it’s consistent across neighbors in your area, check LADWP’s service alert page.
- Pressure regulator issue: Most homes in LA have a pressure regulating valve (PRV) on the main line. PRVs typically last 7 to 12 years. A failing PRV can cause pressure that’s too low or, more damaging, too high. High pressure puts unnecessary stress on pipe joints and appliance connections.
- Partial blockage or leak: A supply line that’s partially blocked by mineral scale or developing a slow leak can cause pressure drops at specific fixtures.
If pressure seems consistently off — too high or too low — at multiple fixtures, it’s worth having a plumber check the PRV. It’s an inexpensive part to replace and can prevent more costly pipe and appliance damage.
A-1 Total Service Plumbing serves Los Angeles, La Habra, and Anaheim. If your water pressure seems off this summer, call us for a same-day assessment.
3. Dry Season Soil Shift and Your Sewer Line
This is the summer plumbing risk most LA homeowners don’t see coming. During the long dry season, the soil around your underground pipes loses moisture and compacts. As it shifts, it can cause older sewer lines to develop cracks, lose joint alignment, or create low spots where debris accumulates and blockages form.
Los Angeles has a significant stock of older clay sewer pipes, particularly in neighborhoods built before 1970. Clay is durable but becomes increasingly brittle with age and is vulnerable to the kind of soil movement that LA’s dry summers accelerate. Orangeburg pipe — a paper-and-tar construction common in homes built between the 1940s and 1960s — is even more susceptible.
Signs that your sewer line may be developing a problem:
- Multiple slow drains throughout the house simultaneously
- Gurgling sounds from toilets or floor drains after fixtures are used
- A sewage smell in the yard or near clean-out access points
- Unusually lush or green patches of grass in the yard above the sewer line — a sign that effluent is feeding the soil
- Sewage backup in the lowest fixture in the home, typically a ground-floor toilet or tub
A camera inspection of your sewer line is the only way to know its condition with certainty. If your home is more than 40 years old and has never had a sewer inspection, summer — before the rainy season returns — is a good time to schedule one.
4. Prepare Your Plumbing Before Summer Travel
July is peak vacation season, and an empty house is where small plumbing problems become expensive ones. A slow leak under a sink, a running toilet, or a water heater that’s beginning to fail doesn’t get better when no one is home — it just runs undetected.
Before leaving for an extended trip:
- Shut off the main water supply if you’ll be gone more than a week. This eliminates the risk of a leak causing water damage while you’re away. Know where your main shutoff is before you need it.
- Check under sinks and behind toilets for any moisture, corrosion, or slow drips before you leave. A supply line that’s been showing minor seepage under a cabinet can become a flooded bathroom in a week.
- Inspect your water heater. If it’s showing any of the warning signs covered in our water heater replacement guide — rust, moisture at the base, inconsistent heat — don’t leave it running unattended for two weeks.
- Set your water heater to vacation mode if it has one. This maintains a lower temperature that prevents bacterial growth while reducing energy use while you’re away.
- If you have a smart water shutoff device or leak detector, confirm it’s functioning and connected before you leave.
A trusted neighbor or house-sitter who knows where your main shutoff is provides an additional layer of protection that no smart device fully replaces.
5. Kitchen and Bathroom Drain Maintenance
Summer means more people in the house — houseguests, family visits, kids home from school. More daily showers, more meals cooked at home, more demand on drains that may already be running slower than they should.
A few things worth doing before the summer demand peaks:
- Clean your shower and tub drain screens. Hair and soap buildup in drain screens is the most common cause of slow bathroom drains and takes minutes to address.
- Run hot water through kitchen drains and avoid putting grease down the drain. Grease solidifies in pipes and accumulates over time. Summer heat doesn’t prevent this — the grease cools as it moves deeper into the drain line.
- If any drain in the house has been running noticeably slow for weeks, address it before the household load increases. A slow drain is a partial blockage, and a partial blockage under higher use becomes a full blockage.
For older homes in Los Angeles with cast iron drain lines, professional hydro jetting once a year — or at minimum every two to three years — clears accumulated scale and buildup that chemical drain cleaners can’t touch.
6. Check Your Irrigation System
Irrigation systems in LA run hard during the summer months, and the start of the season is when problems that built up over spring reveal themselves under daily use load. A head that’s cracked or misaligned, a zone valve that’s stuck partially open, or a supply line that developed a slow leak over winter can all drive up your water bill significantly before the problem is noticed.
Take a few minutes at the start of each irrigation cycle to walk your zones and check for:
- Heads that aren’t retracting fully after the cycle — they’ll continue to drip
- Wet patches or pooling in the yard outside of the irrigated area — often a sign of a leaking lateral line underground
- Pressure that seems low in one zone but not others — can indicate a broken line or stuck valve
Irrigation supply line leaks are plumbing jobs when they involve the main supply, not just surface-level head replacement. A licensed plumber can diagnose and repair underground line leaks that a landscaper or irrigation tech can’t legally address.
A-1 Total Service Plumbing handles summer plumbing maintenance, inspections, and repairs throughout Los Angeles, La Habra, and Anaheim. Call us before a small problem becomes a summer emergency.
Frequently Asked Questions
Why is my water pressure low in the summer in Los Angeles?
Seasonal demand on LA’s water distribution system can cause temporary pressure fluctuations during peak summer months. If low pressure is limited to your home and not a neighborhood-wide issue, a failing pressure regulating valve (PRV) or a developing supply line problem is the more likely cause. A plumber can test system pressure at your meter and diagnose the source.
Should I shut off my water before going on vacation in Los Angeles?
For trips longer than a week, yes — particularly if your home has any known drips, aging supply lines, or an older water heater. Shutting off the main water supply eliminates the risk of a slow leak becoming a major water damage event while the house is unoccupied. Know where your main shutoff is located before you leave.
How do I know if my sewer line has a problem?
Multiple slow drains throughout the house, gurgling sounds after fixture use, sewage odor in the yard, unusually green patches of grass above the sewer line, or sewage backup in a ground-floor fixture are all signs worth taking seriously. A camera inspection is the definitive diagnostic — it’s non-invasive, takes under an hour, and gives you a clear picture of pipe condition.
How often should I have my drains professionally cleaned in Los Angeles?
For most homes, professional drain cleaning every one to two years is sufficient maintenance. For older homes with cast iron lines, or households that put heavy use on kitchen drains, annual cleaning is a better interval. If drains have been slow repeatedly, a professional cleaning — not a chemical treatment — is the right fix.
The Bottom Line
Summer is when LA’s plumbing gets its hardest workout of the year: more people, more outdoor use, and a dry season that stresses underground pipes in ways you don’t see until a problem surfaces. A few hours of attention now — outdoor faucets, water pressure, drain condition, pre-vacation prep — is far less disruptive than dealing with a plumbing failure in the middle of August.
A-1 Total Service Plumbing serves homeowners throughout Los Angeles, La Habra, and Anaheim. If something’s been nagging at you about your plumbing, summer is a good time to get it looked at before your household load peaks.
Call A-1 Total Service Plumbing for summer plumbing inspections, maintenance, and repairs in Los Angeles, La Habra, and Anaheim. Same-day availability.
