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 mold inspection
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Expert Water RemovalHow Job match is calculatedBuilt only from reviews Google tagged “Mold inspection”:Stars on this job 55%4.88★Number of such jobs 25%58Overall Experts Score 20%73Job match= 85Stars 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.85
SERVPRO of Taunton, Mansfield, Seekonk, DightonHow Job match is calculatedBuilt only from reviews Google tagged “Mold inspection”:Stars on this job 55%5.00★Number of such jobs 25%9Overall Experts Score 20%77Job match= 79Stars 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.79
Tomahawk Professional Services LLCHow Job match is calculatedBuilt only from reviews Google tagged “Mold inspection”:Stars on this job 55%5.00★Number of such jobs 25%4Overall Experts Score 20%97Job match= 76Stars 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.76Job match = this company’s ★ on reviews Google tagged “Mold inspection” (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 mold inspection
Expert Water RemovalIt’s all about the sale, after that you have to stay on top of them. Their communication system is not good at all you get text messages and emails from a lot of different people and always a different answer. 1 schedule of work, one said Thursday and crew showed up on Tuesday 2 reports, you have to ask around 2-3…
SERVPRO of Taunton, Mansfield, Se…Antonio, Dylan & Jason did a phenomenal job! They were all polite, respectful and updated me daily.
Expert Water RemovalWe had a small area of organic growth in the corner of a windowsill that was highly suspicious for mold. It did not look to be too serious as the area was very small and there was no increase in growth from June until September but we wanted to get the area evaluated just to be safe . We had a mold restoration…
Expert Water RemovalSuch a great experience with Expert Water Removal! They were professional and efficient… even on Labor Day Monday! They shared all of the options with me and as a single woman, I felt respected as they explained everything they were doing at each step. Victor and Raul were amazing and I am grateful!
Expert Water RemovalThank you to your entire team for your courteous, prompt, and professional service. I highly recommend this company to anyone needing service or expert guidance. Last year we needed service and everyone including 3rd party contractors had high standards in service and communication. I just recently requested support…
SERVPRO of Taunton, Mansfield, Se…Adam and Nate were great. Professional, knowledgeable, and got the job done quick. Zach the estimator was a big help as well, they all made everything easy and straight forward with the mold remediation in my house. Would recommend to anyone.
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.