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King & Sons Septic Service, LLC

Septic system service · Rockville, MD · reviewed since 2022

How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%99+54Reliability 24%99+24Value 14%100+14.1Replies to reviews 7%77+5.4Experts Score= 98Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.98SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#8 of 82 septic tank servicesPosition by Experts Score among all companies we track in this category. · better than 91%
5.0 ★★★★★ 887 Google reviews · 24 photos
99%five-star reviews
4.98★last 12 monthsAverage stars on reviews from the last 12 months only.
0.2%1–2★ in 2 yearsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
41%reviews answered by the owner
$292typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).

King & Sons Septic Service, LLC at a glance

Customers consistently describe King & Sons Septic Service as punctual, efficient, and professional, noting that staff members provide thorough explanations of septic tank conditions and work performed. Reviewers highlight fair pricing, clear communication throughout the scheduling and service process, and careful handling of property during tank pumping and system inspections. One low-star review criticizes the company for failing to resolve a persistent issue, refusing responsibility, and attempting to charge additional fees after an initial repair did not succeed.

  • Google rating: 5.0 out of 5 from 887 reviews (99% five-star).
  • Reviews on this page: 887 Google reviews (569 with written comments, 11 with photos).
  • Owner responses: the business replied to 41% of reviews.
  • Most recent review: October 31, 2026.
  • Service: Septic Tank Service serving Rockville, Maryland.

Data from Google, last updated November 3, 2026.

Score profile vs other septic tank services

Score per factor (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: craft & service and value; weakest: replies to reviews.

Satisfaction99Reliability99Craft & service100Value100Momentum100Replies to reviews77Satisfaction: 99 (median 91)Reliability: 99 (median 87)Craft & service: 100 (median 96)Value: 100 (median 100)Momentum: 100 (median 100)Replies to reviews: 77 (median 77)
This companySeptic Tank Services median0 = centre, 100 = best
SatisfactionSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.King & Sons Septic Service, LLC: 99/100 on this factor. Category median: 91.A
99
ReliabilityReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.King & Sons Septic Service, LLC: 99/100 on this factor. Category median: 87.A
99
Craft & serviceCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.King & Sons Septic Service, LLC: 100/100 on this factor. Category median: 96.A
100
ValueValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.King & Sons Septic Service, LLC: 100/100 on this factor. Category median: 100.A
100
MomentumMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.King & Sons Septic Service, LLC: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.King & Sons Septic Service, LLC: 77/100 on this factor. Category median: 77.B
77

Bar = this company · dark tick = category median.

Star ratings

887 Google reviews we collected

  • 5 stars87999%
  • 4 stars71%
  • 3 stars00%
  • 2 stars00%
  • 1 star10%

Praise vs complaints

Phrases our text analysis found in 569 written reviews

  • Praise1,003100%
  • Complaints50%

PriceGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Price verdicts customers left with their Google review

  • Great price7139%
  • Reasonable10659%
  • Overpriced00%
  • Not sure42%
$292-30% vs typical septic tank services

Middle half of what 149 customers paid ($239–$383) · gold mark = category median.

Topic share

How often each topic comes up in the written reviews

  • Staff & attitude28228%
  • Speed & response24224%
  • Quality & results18719%
  • Would recommend10811%
  • Price & value757%
  • Communication646%
  • Honesty & trust505%

What customers talk about

We read 569 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Gary is extremely knowledgeable, worked with the county inspector for the necessary approvals and was great to work with.”
  • “Their communication, professionalism and timely response are above par.”
  • “He provided a thorough explanation of the work he did and the condition of our tank, cleaned up well and did an overall great job.”
  • “Definitely recommend and will continue to use King & Sons!”
    “I cannot recommend this family owned business enough!”
  • “The cleaning was done and the price was reasonable!”
  • “Everyone, from scheduling to the final communication, was extremely pleasant to deal with.”
  • “It’s rare to find a company that combines skill, transparency, and genuine customer care, but they do.”
    “They're not trustworthy.”

People customers mention

  • Travis 10 reviews
  • Brian 6 reviews
  • Gary 6 reviews

praise complaint · found by our text analysis, Google review wording unchanged.

Reviews for your job

Customers hired King & Sons Septic Service, LLC for 5 kinds of job. Pick one to see what they paid and said.

Recent priced reviews

Andi11 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 5 days ago★★★★★

Second time using this company, and we will continue to use them. On time, quick and courteous service. Very nice people.

Paid $200–400Great priceService not listed
TonyLocal Guide · 13 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a week ago★★★★★

Travis was prompt, professional and efficient. He provided a thorough explanation of the work he did and the condition of our tank, cleaned up well and did an overall great job.

Paid $200–400Reasonable price
RobertLocal Guide · 2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 weeks ago★★★★★

I had a great experience with Brian from King and Sons septic service. It was a very pleasant experience except for the odor once the septic tank was opened up! Then I retreated and let the expert do his job! The cleaning was done and the price was reasonable! Overall a great job!

Paid $400–600Reasonable priceService not listed
LaraLocal Guide · 22 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited a month ago★★★★★

Everyone I interacted with with friendly and professional. A great company to do business with!

Paid $200–400Great priceService not listed
SUSAN13 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Everyone, from scheduling to the final communication, was extremely pleasant to deal with. They were able to come out to our house within days of scheduling, were prompt, knowledgeable, and efficient. I highly recommend working with them.

Paid $400–600Reasonable priceService not listed
Jo5 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★

Once the service arrives it is excellent. Trying to get through to them on the phone to set up a call is difficult.

Paid $200–400Great priceService not listed

Photos

Customer reviews

5.0 ★★★★★ 887 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Jobs customers hired them for — from Google's service tags and the review text
Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
S LS3 reviewsTotal number of Google reviews S has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

We’v used King and Sons for septic service for over 25 years. They are professional and reliable.

  • Price assessment: Reasonable price
  • Services: Service not listed
Andi Tozzoli11 reviewsTotal number of Google reviews Andi has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Second time using this company, and we will continue to use them. On time, quick and courteous service. Very nice people.

  • Price assessment: Great price
  • Price: $200–400
  • Services: Service not listed
Tony PetrolleLocal Guide · 13 reviewsTotal number of Google reviews Tony has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Travis was prompt, professional and efficient. He provided a thorough explanation of the work he did and the condition of our tank, cleaned up well and did an overall great job.

  • Price assessment: Reasonable price
  • Price: $200–400
Response from the owner · 5 days ago

Thank you for your great review, Tony! We’re thrilled to hearTravis provided professional service and took the time to explain everything thoroughly. We appreciate your trust in King and Sons Septic Service!

Drew Wasson5 reviewsTotal number of Google reviews Drew has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Terrific service. Prompt and quick. And were informative, answering all my questions. Thank you!

Response from the owner · 5 days ago

Thanks for great feedback, Drew! We’re happy to help and appreciate your business!

Fritzi Moyars4 reviewsTotal number of Google reviews Fritzi has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very efficient job. Very polite service

  • Price assessment: Great price
  • Price: $200–400
  • Services: Service not listed
Response from the owner · 5 days ago

Thank you so much, Fritzi! We appreciate your business!

Ken Kubu8 reviewsTotal number of Google reviews Ken has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Perc test required for MC permits in preparation for installation of new septic system. Enjoyed working with Gary King from King & Sons Septic Service. Gary is extremely knowledgeable, worked with the county inspector for the necessary approvals and was great to work with. I recommend the company for all your septic needs.

Response from the owner · 2 months ago

Thanks so much, Ken, for the kind words and 5-star review! We’re glad Gary could help get everything taken care of on short notice. We truly appreciate your recommendation!

Diane Levy3 reviewsTotal number of Google reviews Diane has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very personable and efficient. I am a very satisfied and loyal customer.

  • Price assessment: Reasonable price
Response from the owner · 5 days ago

Thank you, Diane! We truly appreciate your business and recommendation!

Jenn CarricoLocal Guide · 13 reviewsTotal number of Google reviews Jenn has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I don’t often write a review but these guys deserve the highest ratings! Their communication, professionalism and timely response are above par. Customer service is top notch and bonus: they know what they’re doing!

  • Services: Septic system installation, Sewer repair
Response from the owner · 2 weeks ago

Thank you Jenn, for the fantastic review! We truly appreciate your kind words and are glad our team’s communication and service exceeded your expectations. Thank you for choosing King and Sons Septic Service! We appreciate your business and for taking the time to let us know how we are doing!

Robert MackleerLocal Guide · 2 reviewsTotal number of Google reviews Robert has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I had a great experience with Brian from King and Sons septic service. It was a very pleasant experience except for the odor once the septic tank was opened up! Then I retreated and let the expert do his job! The cleaning was done and the price was reasonable! Overall a great job!

  • Price assessment: Reasonable price
  • Price: $400–600
  • Services: Service not listed
Response from the owner · 2 weeks ago

Thank you so much, Robert, for the wonderful review! We’re glad Brian provided excellent service and made your experience a positive one. We appreciate your business and your kind words about King and Sons Septic Service!

kimothy wilsonLocal Guide · 13 reviewsTotal number of Google reviews kimothy has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

The King family is the best in the business. Randy came and diagnosed a problem with my back line in no time. I got an estimate quickly. The price was fair and the work was done right. If you need any septic work, this is the company to call

Response from the owner · a month ago

Thank you so much, Kimothy, for the kind words and recommendation! We truly appreciate your trust in the King family and are so glad you had a great experience with Randy. It means a lot to our entire team!

King & Sons Septic Service, LLC on Google Maps →

Business details