How Many Keywords Should a Plumbing Company Target in Google Ads?
Quick Answer: A plumbing company running Google Ads should target 15-50 well-chosen keywords across all campaigns — not hundreds. Quality beats quantity every time. Each keyword should represent a search a real customer would make when they need plumbing help right now. A tight list of 20-30 high-intent keywords with proper match types and a solid negative keyword list will outperform 200 loosely related keywords in almost every case.
More keywords feels like more opportunity. It's a natural instinct — cast a wider net, catch more fish.
In Google Ads, that instinct leads to wasted budget. Here's the reality: for a local plumbing company, there are only so many search queries that represent real customers with real needs. Adding hundreds of keywords beyond that set doesn't create more potential customers — it just means your ads show for more irrelevant searches that don't convert.
Let's talk about how to build the right keyword list, not the biggest one.
The Quality-Over-Quantity Rule in Plumbing Keywords
A plumbing company's Google Ads keywords need to represent one thing: searches made by homeowners who need plumbing help and are ready to call someone.
Everything else is noise. Keywords that attract informational searches, DIY researchers, job seekers, or people in the wrong geography cost you money without producing leads.
The question isn't 'how many keywords can we target?' It's 'how many distinct, legitimate searches do our ideal customers make when they need us?' For most plumbing companies in one metro area, that list is 20-60 keywords. Well-chosen and well-structured.
I've audited plumbing accounts with 800+ keywords and accounts with 30 keywords. The 30-keyword account, properly targeted with good match types and a solid negative list, consistently outperformed the 800-keyword account in cost per lead. Volume of keywords is not a quality signal. It's often the opposite.
The Four Types of Plumbing Keywords That Actually Convert
1. Service + Location Keywords
The backbone of any plumbing Google Ads campaign. These combine what you do with where you do it:
'plumber Indianapolis'
'drain cleaning Carmel IN'
'water heater replacement Fishers'
'sewer repair Indianapolis'
These are your highest-volume, most-competitive keywords. Use phrase match or exact match to keep control of what searches you match. A plumbing company should have 10-20 service + location keyword variations as the core of their keyword list.
2. Emergency and Urgency Keywords
These signal immediate need and convert at extremely high rates:
'emergency plumber near me'
'plumber near me open now'
'24 hour plumber [city]'
'burst pipe help'
'flooding basement plumber'
These searches come from people who need someone right now. They're worth higher bids than scheduled-service keywords because the conversion likelihood is so high. Add 5-10 of these.
3. Problem-Symptom Keywords
Many customers don't search 'plumbing service' — they describe their problem:
'no hot water'
'slow drains throughout house'
'toilet keeps running'
'water heater making noise'
'low water pressure'
'sewage smell in basement'
These are often lower competition than pure service keywords and can have excellent conversion rates because the searcher is describing an active problem. Add 8-15 problem-symptom keywords relevant to your services.
4. Near Me Variants
'Near me' searches have exploded with mobile usage and remain extremely high-converting because they indicate someone wants local help now:
'plumber near me'
'drain cleaning near me'
'emergency plumber near me'
Don't overthink these. Your geographic targeting in Google Ads already ensures these show to people in your service area. They're worth including explicitly because Google tracks them as distinct search terms.
Keywords to Avoid (or Use Very Carefully)
These keyword types often look relevant but perform poorly for local plumbing companies:
Single-Word Keywords
'Plumbing' or 'plumber' with no location or service context are extremely broad. They attract everything from homeowners in your area to people in other states, job seekers, and researchers. If you use them at all, use exact match only: [plumber near me] — not broad match 'plumber.'
Informational Keywords
'How does a water heater work,' 'plumbing pipe types,' 'what causes low water pressure' — these are educational queries, not buying queries. The person searching them is not ready to call you. Save these for SEO content on your website, not Google Ads.
Pricing and Cost Keywords
'How much does a plumber cost,' 'plumbing prices,' 'cheap plumber' — these attract price shoppers who may not convert at the rates other keywords do, and often generate price-shopping calls rather than bookings. They can work, but monitor conversion rate carefully.
Broad Match Without Guardrails
Broad match keywords on their own, without an aggressive negative keyword list, will match virtually anything Google considers 'related.' This is how you end up paying for clicks from people searching 'plumber video games,' 'plumbing code school,' or 'super mario brothers plumber.' Use broad match sparingly and never without extensive negatives in place.
How to Build Your Keyword List
Here's a practical process for building a focused, effective plumbing keyword list from scratch:
List your main services — emergency, drain cleaning, water heaters, sewer, general repairs, etc.
Add your service area — your primary city, major surrounding suburbs, county name, 'near me'
List problem symptoms for each service — what does a customer say when they call with that problem?
Check Google's suggestions — when you type a keyword into Google Ads' keyword tool, Google suggests related terms. Scan those for legitimate additions and also for irrelevant terms to add to your negative list.
Review your search terms report (if you have campaign history) — what are real customers searching to find you? These are real keyword opportunities you may not have thought of.
Start tight. You can always add keywords. It's harder (and more expensive) to clean up a bloated keyword list that's been wasting budget for months.
The Role of Negative Keywords in a Focused Keyword Strategy
A tight keyword list only stays tight with active negative keyword management. Your negative keyword list is the bouncer at the door — it keeps irrelevant searches from getting in regardless of what match types you use.
For every keyword category you add to your positive list, think about what searches you need to exclude. If you add 'plumber [city]' as a phrase match keyword, you'll potentially match 'plumber jobs [city],' 'plumber training [city],' and 'plumber apprenticeship [city].' Those negatives (jobs, training, apprenticeship) need to be in your negative list before you spend a dollar on broad or phrase match.
A reasonable negative keyword list for a plumbing Google Ads account includes 50-150 negatives across job-seeking, DIY, informational, out-of-area, and competitor terms. Build it proactively and review the search terms report monthly to add more.
FAQ: Keywords for Plumbing Google Ads
Should I bid on my competitor's company names?
Bidding on competitor brand names is legal in most cases and some companies do it. The results are mixed. Conversion rates on competitor searches tend to be lower than on generic service keywords, because the person was specifically looking for your competitor. The cost can be high if the competitor bids back on their own name. Generally, your budget is better spent on high-intent service keywords where you're meeting a customer's immediate need — not on brand hijacking.
What's the difference between keywords and search terms?
Keywords are what you tell Google to target. Search terms are the actual words real people typed before your ad showed. These are not the same thing — especially with broad and phrase match. A keyword of 'drain cleaning' might match search terms including 'drain cleaning service,' 'drain cleaning cost,' and 'drain cleaning tool.' The search terms report shows you the real searches. That's where your optimization insights live.
Should I use long-tail keywords or short keywords?
Both, for different reasons. Short keywords ('plumber Indianapolis') have high volume and high competition. Long-tail keywords ('emergency plumber north Indianapolis no hot water') have lower volume but often lower cost per click and higher purchase intent. A healthy keyword list includes both. Long-tail keywords are especially useful for capturing very specific, high-intent searches at lower cost.
How do I know if a keyword is worth bidding on?
Ask two questions: Would a homeowner who is ready to call a plumber type this search? And is the person who would type this search in my service area and able to hire me? If yes to both, it's worth considering. If the keyword is informational, out-of-area, or job-seeker oriented, it's not worth bidding on regardless of its volume.
My campaign has been running for 6 months. Should I add more keywords?
Look at your search terms report first. If you're already appearing for relevant searches and converting well, adding more keywords may not add meaningful new volume — you may already be capturing the available search traffic. If you see relevant searches in your search terms report that you're not bidding on directly, those are worth adding. If your report is clean and your impression share is high, you've likely reached a good keyword coverage level for your market.
Ready to stop guessing where your leads come from? KaeRae Marketing handles Google Ads and local SEO exclusively for home service businesses — no contracts, no confusion, no runaround. Book a free consultation and find out exactly what's possible for your business.
Want to learn this stuff yourself? KaeRae Education has courses, resources, and a membership community built specifically for home service business owners. Visit KaeRaeEducation.com.
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