The Best Tank Installation in Oregon
We graded 6 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 3,891 Google reviews of 15 top-rated tank installation nationwide; 6 of them in Oregon. Updated October 28, 2026.
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Best tank installation in Oregon for septic system installation
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West Side Drain and SepticHow Job match is calculatedBuilt only from reviews Google tagged “Septic system installation”:Stars on this job 55%5.00★Number of such jobs 25%9Overall Experts Score 20%96Job match= 96Stars are pulled toward the category average (4.90★) when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.96Job match = this company’s ★ on reviews Google tagged “Septic system installation” (shrunk toward the category average when there are few), how many such jobs it has done, and its overall Experts Score.
What customers said about septic system installation
West Side Drain and SepticAdam and Alex were amazing technicians! These guys did such a fantastic job and were total pros. Call Westside Drain!!
West Side Drain and SepticDoug came the very next morning after I called in with my septic system concerns. Very friendly, quick and reasonable price. I appreciate the quick response and willingness to rearrange their day to accommodate our issues! Thank you, will definitely be using them in the future!
Overall ratings
Experts Score 0–100Experts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of tank installation).
| # | Company | ScoreExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. | FactorsFactor grades, in orderSatisfaction (54%): Recency-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.Reliability (24%): How 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.Craft & service (0%): Google 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.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises 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.Replies to reviews (7%): How 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.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20. | ★Google star rating as shown on Google Maps. | Typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews). |
|---|---|---|---|---|---|
| 1 |  Valley Plumbing NWNewberg, OR | A 98How 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 59%98+57.5Reliability 26%96+25Value 15%100+15.2Experts Score= 98Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 4.98 | $556 |
| 2 | West Side Drain and SepticNewberg, OR | A 96How 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%96+52.4Reliability 24%95+23Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty97−0.3Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.95 | — |
| 3 |  Brass Monkey PlumbingNewberg, OR | A 92How 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%96+52.4Reliability 24%97+23.5Value 14%99+14Replies to reviews 7%38+2.7Craft & service penalty97−0.3Experts Score= 92Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAD | 4.96 | $705 |
| 4 |  Oregon PlumbingNewberg, OR | A 92How 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 59%93+54.6Reliability 26%88+23Value 15%94+14.3Experts Score= 92Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 4.92 | $902 |
| 5 |  Mr. Rooter Plumbing of NewbergNewberg, OR | A 85How 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%86+46.9Reliability 24%90+21.8Value 14%76+10.7Replies to reviews 7%100+7.1Craft & service penalty83−1.7Experts Score= 85Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAABAA | 4.77 | $582 |
| 6 |  McMinnville Pumping LLCNewberg, OR | B 78How 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 59%81+47.5Reliability 26%68+17.7Value 15%82+12.5Craft & service penalty99−0.1Experts Score= 78Not enough data for replies to reviews; its weight is shared by the others.Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | ABAAA– | 4.70 | — |
What jobs cost
What customers paid, from the price Google asks reviewers to report.
| Job | Low25th percentile: 1 in 4 customers paid less than this. | TypicalMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range). | High75th percentile: 1 in 4 customers paid more than this. | FairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”. |
|---|---|---|---|---|
| Drain cleaning | $248 | $351 | $478 | 100% |
| Plumbing pipe repair | $340 | $453 | $567 | 98% |
| Plumbing leak detection | $99 | $322 | $1.1k | 97% |
| Toilet repair | $236 | $352 | $771 | 94% |
| Outdoor plumbing system repair | $490 | $1.1k | $1.9k | 100% |
| Water heater installation | $1.1k | $1.7k | $2.4k | 98% |
| Faucet installation | $450 | $752 | $2.0k | 98% |
| Plumbing leak repair | $337 | $499 | $745 | 97% |
Tank Installation in Oregon at a glance
How the 6 tank installation we rated in Oregon compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A583%
- Grade B117%
- Grade C00%
- Grade D00%
- Grade F00%
Google ratings
Average stars per company.
- 4.90★ and up467%
- 4.80–4.89★00%
- 4.60–4.79★233%
- Below 4.60★00%
What customers praise
Share of Google review highlights.
- Quality89920%
- Professionalism1,06424%
- Responsiveness97822%
- Punctuality89820%
- Value68015%
Was the price fair?
All price verdicts left with reviews.
- Great price18732%
- Reasonable33658%
- Overpriced203%
- Not sure366%
Price verdicts by year
Share calling it great / reasonable / overpriced.
How we grade
Satisfaction (54%) — Recency-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.
Reliability (24%) — How 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.
Craft & service (penalty, up to −10) — Google 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.
Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.
Momentum (penalty, up to −10) — Penalises 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.
Replies to reviews (7%) — How 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.