Most plumbing emergencies don’t come out of nowhere. A handful of simple checks, done once or twice a year, catch most of what eventually turns into a burst pipe or a flooded closet. Here’s what actually matters, how often it is to do it, and where to start.
In This GuideÂ
Why Seasonal Maintenance Actually Matters HereÂ
Ventura County doesn’t deal with frozen pipes, so it’s easy to assume plumbing here just takes care of itself. It doesn’t. Salt air off the coast speeds up corrosion on fittings and valves. A lot of the county also has harder water than people expect, which means more mineral buildup inside pipes and water heaters than an inland, softer-water area would see.
None of that shows up overnight. It shows up as a slow leak, a water heater that quits five years early, or a drain that backs up for no obvious reason. We’ve written more about this locally in common water issues in California if you want the fuller picture.Â
The Full ChecklistÂ
Here’s the short version. The sections below go into why each one matters and how it’s actually done.
| Task | How Often | Why It Matters |
| Test water pressure at an outdoor spigot | Once a year | Keeps pressure in the safe 50 to 70 PSI range so pipes, fittings, and appliances aren’t under constant strain |
| Flush the water heater tank | Once a year | Clears out the sediment that settles at the bottom and shortens the tank’s life |
| Test the main shutoff valve | Once a year | Makes sure it still turns freely, so it actually works the one time you need it in a hurry |
| Check slow drains before they clog fully | Every few months | Catches scale and grease buildup early, before it turns into a full backup |
| Inspect the earthquake gas shutoff valve | Once a year, or after any valve trips | Confirms it’s still seated correctly and ready to do its job if the ground shakes |
| Check outdoor hose bibs and irrigation lines | Before and after the dry season | Coastal air and shifting soil can loosen fittings over time without any obvious warning |
Water Pressure: Why 50 to 70 PSI Is the Sweet SpotÂ
High water pressure feels great in the shower and is quietly hard on everything else. Most plumbing pros aim for somewhere between 50 and 70 PSI in a home, since that’s enough for good flow without putting constant stress on pipes, fittings, and appliance hoses.
The Uniform Plumbing Code actually, requires a pressure regulator once static pressure passes 80 PSI, and coastal water agencies in this area regularly deliver pressure well above that at the meter before it even reaches your regulator.Â
Testing it takes a couple of minutes with a gauge screwed onto an outdoor spigot. If your regulator is doing its job, you’ll see a steady number in that 50 to 70 range. If it’s climbing higher than that, or bouncing around, the regulator itself is usually the part that needs attention.
Why Your Water Heater Needs an Annual FlushÂ
Sediment settles at the bottom of every tank water heater over time, and it settles faster in areas with harder water. That layer acts like insulation between the burner or heating element and the water, so the unit works harder to do the same job. Left alone for years, it also just takes up space that used to be hot water.
A flush once a year clears that out and is one of the cheapest ways to add real years to a water heater’s life. We go into the process step by step in our water heater maintenance guide, and if yours is already acting up, our water heater repair page has more on that.Â
Testing Your Main Shutoff ValveÂ
The main shutoff valve is the thing that stops a burst pipe from turning into standing water throughout your house. The problem is that valves that sit untouched for years can seize up, and the first time most people try to turn theirs is in the middle of an actual emergency, which is the worst possible moment to find out it’s stuck.
Once a year, find it, turn it closed and back open, and make sure it moves freely. If it’s stiff or won’t budge, that’s worth fixing on a calm Tuesday rather than during a leak. We cover this and a few other quick checks in our guide to preparing for a plumbing emergency.
Keeping Drain Lines Clear of ScaleÂ
A drain doesn’t need to be fully clogged to be in trouble. Scale, grease, and soap residue build up gradually along the inside of the pipe, narrowing it a little more each month. By the time water is actually backing up, that buildup has usually been forming for a while.
Checking drains for slow running every few months and having a jetting or descaling service done every year or two on lines that are prone to it, keeps that buildup from ever becoming a full blockage.
Earthquake Shutoff Valves: What to KnowÂ
An earthquake gas shutoff valve is a mechanical, no-power-needed device that shuts off gas to your home automatically if shaking hits a certain threshold. California has required them on new and substantially renovated homes since 2000, and the California Department of General Services outlines the standards these devices have to meet in more detail if you want the technical side of it.Â
If your home has one, it’s worth confirming once a year that it’s still seated properly and hasn’t been bumped or damaged. If a valve has ever tripped, even during a minor earthquake, it needs to be reset correctly before it can do its job again.
Is a Maintenance Plan Worth Paying For?Â
Plumbing maintenance plans usually bundle a yearly inspection, a water heater flush, and some kind of priority scheduling or discount on repairs into one ongoing fee. For an older home, a home with hard water, or a property you don’t want to think about often, a plan can genuinely save money by catching small issues before they become expensive ones.
For a newer home with fewer moving parts, doing the checklist above on your own timeline might get you most of the same benefit without the ongoing cost.
We’re still building out the specifics of what a formal plan would look like here, so the honest answer right now is to ask directly. Call and we’ll walk through what preventative service options actually make sense for your situation.
Common Mistakes to AvoidÂ
A few habits show up again in homes that end up with bigger plumbing bills than they needed to.
Waiting for a Problem Before Checking AnythingÂ
Most of this checklist takes a few minutes and costs nothing. Waiting until something actually breaks usually means a repair instead of a five-minute fix.
Assuming High Water Pressure Is a Good Thing
Strong pressure feels nice, but anything consistently above 70 or 80 PSI is quietly shortening the life of your fittings, hoses, and appliances.
Never Testing the Main Shutoff ValveÂ
A valve that hasn’t moved in years might not move at all when you need it to. Testing it once a year is the only way to know for sure.
Ignoring a Slow Drain Because It Still WorksÂ
A drain that’s slow but still draining is usually a pipe that’s narrowing, not a pipe that’s fine. It’s easier to address earlier than after it closes completely.
Frequently Asked QuestionsÂ
How often should I really flush my water heater?Â
Once a year is the standard recommendation for most homes, and it’s worth doing more often if your water is especially hard. Sediment buildup happens gradually, so skipping a year here and there usually won’t cause immediate problems. Over several years, though, that buildup adds up and shortens the life of the tank.
What water pressure is too high for my pipes?Â
Anything consistently above 80 PSI is considered too high under the plumbing code most California cities follow. Most plumbers actually aim for a lower range, somewhere around 50 to 70 PSI, since that’s plenty for good flow without the extra wear. High pressure doesn’t usually cause a dramatic failure right away.
Do I actually need an earthquake shutoff valve?Â
If your home was built or substantially renovated after 2000, it very likely already have one. If you’re not sure, it’s worth checking, since these valves have been required on new and renovated homes in California for decades. Even if it’s not strictly required, many homeowners choose to add one given how common earthquakes are in this state.
Is a plumbing maintenance plan worth paying for?Â
It depends entirely on what’s included and how that compares to the cost of booking the same checks yourself. A good plan bundles a yearly inspection, a water heater flush, and some priority scheduling into one predictable fee.
Can I test my main shutoff valve myself?Â
Yes, and it only takes a minute or two. Find the valve, usually near where the water line enters the house, turn it fully closed, then turn it back open. It should move smoothly without excessive force. If it’s stiff, won’t turn, or you’re not confident finding it in the first place, that’s worth having a plumber look at rather than forcing it.
Want a Second Set of Eyes on Your System?Â
If it’s been a while since anyone looked at your water heater, your shutoff valve, or your water pressure, we’re happy to run through the checklist with you. Call (805) 647-0113 or request an appointment online and we’ll take it from there.Â
By Cary Hansen, Owner · Hansen’s Plumbing · Last updated September 4, 2026Â