Community Water System · PWS WA5354740
Minterbrook
Operator location Tacoma, Washington - larger served population (> 3,309) at 5,083 people served; 130 SDWIS violations on record from groundwater sources.
- 5,083
- People served (this PWS)
- 130
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- 3 PFAS
- UCMR5 (this PWS)
Minterbrook standing, high SDWIS violation third
5,083 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%). UCMR5: middle-third PFAS panel (≤ 4 compounds). Population rank #7,642 of 29,740 among systems serving 500+.
The verdict
Minterbrook sits in the upper third of the sitemap cohort by violation count (130), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (5,083; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 2% (middle-third health share (≤ 23%)). UCMR5 detected 3 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- #7,642 of 29,740
- Population · /systems
- #189 of 766
- Population · WA
- 130
- Total EPA violations on record
- 2%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 1,422
- County
- Pierce
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 124
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Aldicarb | MR | 10 | 2008 |
| Carbofuran | MR | 10 | 2008 |
| OXAMYL | MR | 10 | 2008 |
| Aldicarb sulfoxide | MR | 10 | 2008 |
| Aldicarb sulfone | MR | 10 | 2008 |
| Coliform (TCR) | MR | 8 | 1992 |
| Diquat | MR | 5 | 2007 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 5 | 2007 |
| ETHYLENE DIBROMIDE | MR | 5 | 2007 |
| Barium | MR | 4 | 2002 |
| Cadmium | MR | 4 | 2002 |
| Fluoride | MR | 4 | 2002 |
| Mercury | MR | 4 | 2002 |
| Nickel | MR | 4 | 2002 |
| Antimony, Total | MR | 4 | 2002 |
| Selenium | MR | 4 | 2002 |
| Arsenic | MR | 4 | 2002 |
| Thallium, Total | MR | 4 | 2002 |
| CYANIDE | MR | 4 | 2002 |
| Chromium | MR | 4 | 2002 |
| Beryllium, Total | MR | 4 | 2002 |
| Coliform (TCR) | MCL | 3 | 2015 |
| Lead and Copper Rule | MR | 2 | 1994 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
Violation Count vs. the National Corpus
Minterbrook has 130 recorded EPA violations, 78% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 21% carry more. 2% of this system's own violations are health-based (3 of 130), and it ranks #7,642 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
130 Higher than most more violations than 78% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 377 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFDoA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/21/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOA | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOS | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 7/21/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFPeA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 7/21/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 7/21/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/21/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/21/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 7/21/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBS | 7/21/2025 | 3.90 ppt | 3.00 ppt | Detected |
| PFHpA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 7/21/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 7/21/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
Population served record for Minterbrook
EPA SDWIS lists 5,083 people served and 1,422 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Washington State Department of Health, Office of Drinking Water
Nationwide peers
130 violations · 5,083 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Minterbrook
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Washington compares on the same EPA violation measures. Washington systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.