The Best Water Purification Services
We graded 40 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 10,363 Google reviews of 40 top-rated water purification services nationwide. Updated November 1, 2026.
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Best water purification services for outdoor plumbing system repair
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Gulfview Plumbing & Water TreatmentHow Job match is calculatedBuilt only from reviews Google tagged “Outdoor plumbing system repair”:Stars on this job 55%5.00★Number of such jobs 25%18Overall Experts Score 20%93Job match= 94Stars are pulled toward the category average (4.85★) 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.94
Armstrong Bros PlumbingHow Job match is calculatedBuilt only from reviews Google tagged “Outdoor plumbing system repair”:Stars on this job 55%4.95★Number of such jobs 25%20Overall Experts Score 20%80Job match= 90Stars are pulled toward the category average (4.85★) 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.90
Mark Lindsay and Son Plumbing, Heating & Air ConditioningHow Job match is calculatedBuilt only from reviews Google tagged “Outdoor plumbing system repair”:Stars on this job 55%5.00★Number of such jobs 25%3Overall Experts Score 20%80Job match= 74Stars are pulled toward the category average (4.85★) 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.74Job match = this company’s ★ on reviews Google tagged “Outdoor plumbing system repair” (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 outdoor plumbing system repair
Mark Lindsay and Son Plumbing, He…Always prompt, knowledgeable and courteous technicians. We have use them for oil boiler, plumbing, fixtures and air conditioning for 25 years. Very reliable.
Armstrong Bros PlumbingTech was great on a hard job and did wonderfully. Plumbing is working perfectly and very professional
Gulfview Plumbing & Water Treatme…I had a great experience with Gulf View Plumbing. Eric showed up right on time, which I really appreciated, and he was professional from start to finish. He took the time to explain what was going on, walked me through the solution, and made sure everything was done correctly before wrapping up. The work was clean,…
Mark Lindsay and Son Plumbing, He…Cost of plumbing: Fair Amount of needless stress: Zero Peace of mind: Priceless Having these guys on the ready to handle whatever issues arise improves my whole quality of life. Water is the one service I can't easily work around when the system goes down, and knowing these guys can keep it running helps me to…
Mark Lindsay and Son Plumbing, He…Came to fix my burst pipe within hours. turns out I had an ongoing problem that was the cause . Ken arrived, and proceeded to solve the issue. He then noticed there was poblem that was causing my system to freeze. He came up with a very clever way to fix , I couldn't be more impressed, and all at a reasonable price . These guys are the best. HANDS DOWN
Gulfview Plumbing & Water Treatme…Had a water main line break and everyone at Gulf view plumbing was great. I got an appointment right away, tech showed up on time, let me know all my options and kept me informed. Great job!!!!!
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 water purification services).
| # | 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 |  The Water SpotKinnelon, NJ | A 99How 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 69%100+69.2Reliability 31%98+30.2Experts Score= 99Not enough data for value, 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. | AA––A– | 5.00 | — |
| 2 |  H2O Care, IncWatertown, MA | A 99How 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 64%99+62.9Reliability 28%99+28Replies to reviews 8%100+8.2Experts Score= 99Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––AA | 4.99 | — |
| 3 |  True Health Water SystemsTaunton, MA | A 99How 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 69%99+68.5Reliability 31%98+30.2Experts Score= 99Not enough data for value, 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. | AA––A– | 4.99 | — |
| 4 |  Water Filtration Services, LLCTaunton, MA | A 99How 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 69%99+68.5Reliability 31%98+30.2Experts Score= 99Not enough data for value, 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. | AA––A– | 4.99 | — |
| 5 |  H2O Care, IncTaunton, MA | A 99How 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 69%99+68.5Reliability 31%99+30.5Experts Score= 99Not enough data for value, 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. | AA––A– | 4.99 | — |
| 6 |  Aqua Doctor NJKinnelon, NJ | 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 69%98+67.8Reliability 31%98+30.2Experts Score= 98Not enough data for value, 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. | AA––A– | 4.98 | — |
| 7 |  Pro Comfort Control Water Filtration & Water HeatersWatertown, MA | 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%97+25.3Value 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. | AA–AA– | 4.98 | $1.6k |
| 8 |  CleanTap Water SolutionsTaunton, MA | 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. | AA–AA– | 5.00 | $932 |
| 9 |  Aqua Clear Innovative Water Solutions, Inc.Palmetto, FL | 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 69%99+68.5Reliability 31%97+29.8Experts Score= 98Not enough data for value, 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. | AA––A– | 5.00 | — |
| 10 |  Tomahawk Professional Services LLCKinnelon, NJ | A 97How 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%97+56.9Reliability 26%96+25Value 15%100+15.2Craft & service penalty98−0.2Experts Score= 97Not 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 | — |
| 11 | Colton Water Removal & CleanupWatertown, MA | A 97How 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 69%98+67.8Reliability 31%95+29.2Experts Score= 97Not enough data for value, 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. | AA––A– | 5.00 | — |
| 12 |  Aquatek Filtration & Pump Service Inc.Watertown, MA | 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 64%97+61.6Reliability 28%99+28Replies to reviews 8%76+6.3Experts Score= 96Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA––AB | 4.97 | — |
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”. |
|---|---|---|---|---|
| Heating system repair | $158 | $294 | $821 | 100% |
| Plumbing pipe repair | $202 | $325 | $638 | 96% |
| HVAC system maintenance | $26 | $83 | $242 | 97% |
| Water heater installation | $1.2k | $2.1k | $3.2k | 100% |
| Drain cleaning | $337 | $399 | $495 | 92% |
| Toilet repair | $271 | $383 | $598 | 97% |
| HVAC system repair | $114 | $328 | $585 | 96% |
Water Purification Services at a glance
How the 40 water purification services we rated compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A2665%
- Grade B820%
- Grade C410%
- Grade D25%
- Grade F00%
Google ratings
Average stars per company.
- 4.90★ and up1845%
- 4.80–4.89★923%
- 4.60–4.79★1025%
- Below 4.60★38%
What customers praise
Share of Google review highlights.
- Quality1,00120%
- Professionalism1,19924%
- Responsiveness1,11922%
- Punctuality1,03820%
- Value71514%
Was the price fair?
All price verdicts left with reviews.
- Great price14726%
- Reasonable34360%
- Overpriced163%
- Not sure6211%
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.