A
AISO Studio

Is your plumbing website keeping up? Here's what the data shows.

Plumbing Website Audit Report

We scanned 329 plumbing websites across the United States to benchmark their performance for search engines, AI answer engines, and accessibility.

Industry: Home Services · Sample size: 329 sites · Scan date: March 14, 2026

Overview

The plumbing industry faces a clear challenge online. Most websites in this space score well below what search engines and AI systems need to surface content. The average AISO score across all 329 sites is just 51 out of 100. That is a low bar. It also means there is a big opportunity for businesses that invest in their web presence now.

The strongest area for plumbing sites is SEO, with an average of 76. The weakest area is AEO, at just 19. According to Google's SEO documentation, sites that fail to meet basic technical standards risk losing visibility in both traditional and AI-powered search results.

What does this mean for your business? If your site scores above 51, you are already ahead of most competitors. If it scores below, you risk losing traffic to rivals who fix these issues first. According to the W3C Web Accessibility Initiative, accessible websites also reach a wider audience and reduce legal risk.

Key insight: 41% of plumbing websites score below 50. The majority of sites in this vertical are underperforming across multiple dimensions.

Summary Scores

51

AISO Score

76

SEO

42

Readability

67

Engagement

19

AEO

54

WCAG

Key Findings

41%

Score Below 50

A significant portion of sites need improvement.

25%

Missing Schema Markup

These sites have no structured data, making them harder for search engines and AI to understand.

17%

No Open Graph Tags

Without OG tags, shared links on social media appear without rich previews.

What This Means

These findings tell a simple story. Most plumbing websites were built without modern optimization in mind. They load, they look fine, but they fail to communicate with the systems that drive traffic today.

Search engines need structured data to understand your pages. AI answer engines need clear, direct answers to cite your content. Screen readers need proper HTML to serve users with disabilities. Missing any of these means missing out on visitors, customers, and revenue.

Key Takeaways

After analyzing 329 plumbing websites, here's what stands out most. These are the three most important points from the data.

  1. Most sites score poorly overall. An average AISO score of 51 means the typical plumbing website misses more than half of what modern search and AI systems look for.
  2. AEO is the weakest link. At just 19 on average, this dimension drags down overall scores. Fixing it first gives the biggest return.
  3. Basic technical issues are widespread. 25% of sites lack schema markup. 17% have no Open Graph tags. These are quick wins that most sites have not addressed.
Bottom line: The plumbing industry is behind on web optimization. Early movers who fix these issues will gain a real edge in both search rankings and AI visibility.

How to Improve Your Score

Want to beat the average? Follow these steps in order. Each one builds on the last. Start with the basics and work your way up.

  1. Step 1: Fix your technical SEO. Add a meta title, meta description, and canonical URL to every page. Add schema markup using JSON-LD. Add Open Graph tags so your links look good when shared. These changes take less than an hour and have an immediate impact.
  2. Step 2: Improve readability. Rewrite your main pages at an 8th grade reading level. Use short sentences. Use simple words. Break up long paragraphs. According to Google, clear and simple content performs better in search results.
  3. Step 3: Add engagement elements. Use headings, bullet lists, bold text, and blockquotes. Add images with descriptive alt text. Make your content easy to scan. Visitors decide within seconds whether to stay or leave.
  4. Step 4: Optimize for AI engines. Add a FAQ section to your key pages. Use direct answer formats. Define what your business does in one clear sentence at the top of your homepage. AI systems like ChatGPT and Perplexity prefer content that gives a straight answer.
  5. Step 5: Check accessibility. Run a WCAG audit. Ensure all images have alt text. Check that color contrast meets minimum ratios. Use semantic HTML elements like headings, lists, and landmarks. According to the W3C, over one billion people worldwide live with some form of disability.

Score Distribution

The charts below show how scores are spread across all 329 sites. The histogram groups sites by score range. The grade chart shows how many sites earned each letter grade. A score of 80 or above earns an A. Below 30 is an F.

AISO Score Ranges

0-9
0
10-19
1
20-29
7
30-39
37
40-49
89
50-59
119
60-69
73
70-79
3
80-89
0
90-99
0

Grade Distribution

A
0 (0%)
B
3 (1%)
C
73 (22%)
D
119 (36%)
F
134 (41%)

Dimension Breakdown

Average scores across all 329 plumbing websites for each scoring dimension.

SEO
76
Readability
42
Engagement
67
AEO
19
WCAG
54

Full Results

The table below lists all 329 websites ranked by their overall AISO score. Each row shows the total score, letter grade, and individual dimension scores. Use it to see how sites in the plumbing space compare against each other.

Domains are partially blurred to protect privacy. Scores range from 0 to 100. Higher is better.

#DomainScoreGradeSEORead.Eng.AEOWCAG
1excellen**************71B8958854585
2manw*******71B92571003082
3rozga********70B9162954061
4fhfu******69C9747853397
5ajpe*******69C9764853070
6tlcplu*********69C9270853857
7mrplum***********68C8964852582
8swmissou**************68C87521002878
9russobro*************68C9754852689
10parker***********67C8951902592
11tjkplum***********67C9466854340
12glenspl************67C8958704579
13somersp***********66C8937806370
14aboston***********66C9147904064
15fiveguyspl******************66C7265802693
16jpplu********66C9750753087
17snells***********66C94401004061
18plumbing**************66C89511003359
19hometown**************66C9448902683
20tennessee***************66C9452953357
21sowellp***********65C9270601893
22profpl**********65C9740755069
23joelayp***********65C9439805367
24moretp***********65C8966702580
25bestpic************65C10042903071
26leblan*********65C8943904368
27trustjoe**************65C10048753868
28plumbi**********65C8449903872
29mipurep***********64C7760801893
30atlaspl************64C94471003348
31heartlandhe*******************64C92387825100
32kenspl**********64C8966852653
33benjami*************64C7960852572
34emera*********64C8956952650
35mrplumb*************63C8464755036
36akclearwat****************63C9253702580
37moder*******63C7065852571
38shoreline***************63C9252903348
39oahupip************63C86321004559
40mymode*********63C7979601089
41american**************63C8955781089
42ncmaste************63C8756781882
43mannpl**********63C8946703879
44wolf*******63C9155753065
45llewelly*************63C7971652578
46allensp*************62C9434853375
47timsplum*************62C8757652682
48paulthe*************62C8761681880
49tlhplu***********62C9752603077
50beehive************62C9454831865
51redrockm*************62C72567025100
52apexplum**************61C8961631878
53ackerman*************61C8654783652
54johntheplu******************61C9733782583
55128plu*********61C8952751876
56mnplumbinga******************61C8462853233
57mattspl************61C82556810100
58marks********61C8763503869
59derryplumb*****************61C8155802564
60misterpl*************61C6771651890
61anderson**************61C8657752564
62allpropl*************61C7956852663
63siouxfall**************61C8266783341
64blue-p***********61C8460681090
65wvplumb*************61C8964701864
66washingt**************61C8637735165
67robinsp***********60C9240701895
68benjaminfr******************60C8456803049
69jfrederi*************60C9459751062
70holeshot**************60C9465751050
71epicplu************60C9438735538
72mountain**************60C8138901882
73dayandn*************60C8650902550
74plumbinga****************60C8749852556
75midtownp**************60C7861802650
76timberr************60C8644683871
77theplu**********59D8757702652
78ctins********59D8950854124
79mrplumb*************59D7453751092
80allaloh*************59D8942902553
81brianb*********59D8443851872
82putmanp***********59D7956731876
83cregger************59D9447902833
84plumbing**************59D87425526100
85capitalp**************59D7362701875
86gunther************59D9452601087
87statewide***************59D8254703847
88texassout****************59D8147753064
89firstc**********58D8160552672
90callthep*************58D79476810100
91rileyplum***************58D8467681847
92superio*************58D7455701877
93powerpl*************58D8238731891
94advantag*************58D8950781855
95michiga*************58D8544701090
96msplumbin**************58D7970801833
97spart*********58D8661851834
98therock************57D8966682526
99joesimpso***************57D8744633064
100833go*********57D84436010100
101inceptio*************57D8445601891
102carlisle**************57D845763090
103jeffthe***********57D8461802526
104evergree**************57D8150901845
105pinnacle**************57D8452683840
106merrittplum******************57D7959731067
107fryplu*********57D7660631080
108sosplumbi***************56D8741701083
109mymrpl*********56D7161731854
110mainely************56D8152701075
111justcal*************56D9240902626
112platinum**************56D9244551093
113valley***********56D8051601878
114expertse**************56D9522653083
115barneysp**************56D9721754057
116cooperp***********56D8446703052
117optimalp*************56D8440853829
118superiorp**************55D8444651082
119raylusk************55D7424733683
120cool*******55D7042751093
121master**********55D9212732593
122rowells***********55D7664651057
123thepoli*************55D8366601843
124agoodp**********55D8457751837
125beno*******55D8263901017
126laplante*************55D7250801070
127prodigyp**************55D7766631055
128all-abou**************55D6453751078
129a-1totalse*****************54D8943782630
130harpcan***********54D9247701053
131brookfiel****************54D6964652539
132rjcplu*********54D8936601089
133callbro************54D8751701843
134abetterp*************54D8650781835
135lucaspl*************54D8229751876
136carypl**********54D7944731860
137riplu********54D7155601079
138kwikplu***********54D7735701880
139legacyp***********54D7664751040
140lenthe***********54D890903377
141plumbi*********53D7944601868
142gbj****53D7951731055
143louisiana***************53D7659702624
144barados************53D8154801827
145american**************53D7643701073
146therigh*************53D7957651050
147tiptons************53D7659631057
148halle********53D8140701864
149brubak*********53D8949851817
150bakerbrot****************53D8429701875
151starvall**************53D5253601889
152allsta***********52D796055070
153calljoet*************52D6742752552
154properplum****************52D8660751019
155fayette***********52D8424702075
156affordable****************52D8460652514
157cornersto****************52D8435801054
158caballer*************52D6751753035
159korcop***********52D7947551867
160dirkplumbi****************52D7962433042
161getma*********52D8442631855
162yourpl***********52D7448501090
163mattoxp***********52D6743751071
164arrowp***********51D7257901013
165homeservi****************51D6752651850
166deplu********51D6736651878
167wrenchp***********51D7453581853
168kevinszab***************51D8145802516
169mrplum*********51D7244501090
170prolinep*************51D8157551053
171maximump*************51D8946732515
172207plumbi****************51D7961731023
173citywide**************51D6958601550
174hartplumbi****************51D8459501047
175propl*********51D7243501090
176cassel*********51D8443752520
177midwestp**************51D8457551047
178azfamil*************50D7655751026
179arkansasplu******************50D7240501090
180ramarp***********50D7234651080
181gaplu*********50D5254512571
182535plu*********50D893083339
183villageof****************50D5742502091
184jakemill**************50D7959701814
185batonrou**************50D7451651047
186chaseplu**************50D6933651875
187alexande**************50D6961701030
188ocbplu*********50D7954501850
189advanced-**************50D62395310100
190lovelandp****************50D8647752013
191lebanonpl***************50D8951751015
192mrrooterof****************50D8258701810
193tnsta*********50D8915802550
194theovera*************50D7626752554
195kingpl*********50D7165551044
196arcticplum******************49F5952782526
197goldcoa*************49F9240681725
198mrroo*******49F9226603038
199centralc*************49F6661551840
200plumbin************49F7259632614
201fairpl*********49F915752564
202plumbe***********49F7031601090
203onecallp*************49F8733731832
204veteran***********49F8739651044
205cpiplu*********49F972833338
206airta********48F9440652511
207allprop***********48F6955751022
208northida**************48F7451731815
209roden*********48F7936701835
210vegasvall**************48F8210731083
211mccreedyspl********************48F7649651038
212virginiapl*****************48F6252731829
213midstate**************48F8138651835
214southern**************48F6451581059
215plumbin***********48F6240651071
216plumbingm****************48F7263501827
217ellisonp*************47F5968501044
218pureplu***********47F7951681018
219superpl************47F7141552047
220annethe*************47F5050651063
221georgepru***************47F6245681050
222tsbpe.*********47F4236751870
223rowellplu****************47F7142501067
224plumb*********47F7155701812
225circleplum******************46F764255854
226dpo.co**********46F6215731091
227quality************46F7939651036
228certified****************46F6959651019
229affordablepl********************46F6240651058
230trinityp*************46F8430551055
231performa**************46F4454581064
232masterp***********46F7749431050
233a1discou*************46F946801843
234hubplum***********46F6251631042
235lincoln************46F5451451078
236finle*********46F6473451026
237justplu***********46F6647631044
238bestpl*********46F7946681018
239mtnvall***********46F7446652510
240aspenmt*************46F9138551528
241myapl*********45F8424701829
242pinkplumb***************45F5761681017
243mathews************45F6947681025
244royalpl************45F7741601038
245asiplu*********45F6933651053
246plumbing**************45F7418651070
247warrenc*************45F7923511076
248greenwoodpl********************45F6946651032
249plumbl*********45F3737753841
250premierp*************45F6456501038
251en.info***********45F7438601045
252dixonplumb*****************44F7447601813
253agamentic**************44F6926681055
254plumbing-s****************44F7422731839
255americanbr****************44F840753038
256oregon***********44F4638501089
257theiris************44F7138501054
258plumbi**********43F4541681054
259ky-p*****43F890653338
260voyageu*************43F7216801835
261precision***************43F7239551827
262unclo********43F870902516
263plumbe***********43F6231481075
264drplum*********43F7925631040
265brother*************42F790682550
266tncplu*********42F7640501032
267ivittsp***********42F4549681032
268trombly************42F5747601032
269plumbing**************42F7618731829
270easternpl****************42F7936551815
271accuratep**************42F7431601039
272vikingplumb******************42F6148551033
273pgfb.a**********41F5235681040
274guardia*************41F7430601033
275michae***********41F870901815
276kirklan************41F650651875
277northjerseyp*********************41F6221501078
278flowrigh*************40F890652529
279aaronsp*************40F4046751026
280superior**************40F4241202875
281fredsmit*************40F6155501013
282seminole*************40F5723501075
283texasqual***************40F94075284
284en.excelle****************40F6920501058
285littlebigp*****************39F6627501046
286czplum**********39F6735551025
287richar***********39F5410601078
288anytimep**************39F5744601017
289duniganp*************39F5434581038
290phce******39F6426501838
291forrestt*************39F6416651048
292capston*************38F680751052
293theauss*************38F793948019
294dli.******38F5505010100
295neoplum***********38F840751025
296accurate*************38F7116501055
297southe***********38F6134681014
298fastb*******38F710801830
299akbes*******37F613940050
300tritown************37F743550811
301myprem*********37F7930501012
302johnspl*************37F5710651844
303bergsma************37F692463188
304willp********37F6614751025
305pennsylva***************37F567681054
306olsonpl*************37F3950351050
307rotor*********36F740431073
308nwipl*********36F4139501038
309missoulaplu*******************36F82273186
310donwood************36F5421731019
311evergreenpl******************36F544131060
312honestplum******************35F455581073
313nevadaplum*****************35F710501060
314gaplumb***********34F4728501039
315dlr.******34F5910531050
316westlak*************33F376223828
317neplu*********33F4422431055
318proc*******32F790551516
319georgiama****************32F6715282333
320inph******32F640501050
321florida***********30F5315501027
322dittmer************29F600501031
323missour*************28F393530033
324independe***************27F4520251038
325professional*********************27F440681020
326jcplo********24F54040032
327jasonth************23F371315064
328plumbings***************20F10330067
329southtex**************18F323351013

Frequently Asked Questions

What is the average AISO score for plumbing websites?

The average AISO score for plumbing websites is 51 out of 100. This is based on a scan of 329 sites in the home services industry. The score combines five dimensions: SEO (76), readability (42), engagement (67), AEO (19), and WCAG accessibility (54).

How do plumbing websites perform on accessibility?

The average WCAG score is 54 out of 100. Many plumbing websites still lack basic accessibility features like alt text on images, proper heading structure, and sufficient color contrast. Improving accessibility helps you reach more users and reduces legal risk.

Are plumbing websites ready for AI search engines?

Not yet. The average AEO score is 19 out of 100. AI engines like ChatGPT, Perplexity, and Google AI Overview need structured data, FAQ sections, and direct answer formats to cite a website. Currently, 25% of plumbing sites have no schema markup at all.

What is the biggest weakness for plumbing websites?

The weakest dimension is AEO, with an average score of just 19. This represents the area where plumbing websites have the most room to grow. Focusing improvement efforts here will have the largest impact on overall scores.

How can I check my own website's score?

You can run a free audit on any website using AISO Studio. Enter your URL and get a full breakdown of your SEO, readability, engagement, AEO, and WCAG scores in under a minute. No signup required.

Methodology

We score each website across five areas. The AISO Score is a weighted mix of all five. It shows how well a site works for both people and AI systems. Here is what each area measures.

SEO (Technical Search Optimization)

Checks meta titles, descriptions, canonical URLs, schema markup, Open Graph tags, heading structure, and other signals that help search engines crawl and index a page.

Readability

Measures the Flesch Reading Ease score, average sentence length, and word complexity. Higher scores mean the content is easier for the public to read and understand.

Engagement

Looks at content formatting: headings, lists, bold text, blockquotes, images, and other elements that make content easy to scan and read.

AEO (AI Engine Optimization)

Checks how well content is set up for AI answer engines like ChatGPT, Perplexity, and Google AI Overview. Looks for direct answer formats, FAQ sections, and clear definitions.

WCAG (Accessibility)

Tests for Web Content Accessibility Guidelines compliance: color contrast, alt text, ARIA labels, semantic HTML, and keyboard navigation support.

How Does YOUR Plumbing Website Score?

The average plumbing website scores 51/100. Run a free audit to see where you stand and get actionable recommendations to improve your search visibility, AI readiness, and accessibility today.

Get Your Free Audit
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Plumbing Website Audit Report - AISO Studio | AISO Studio