Community Water System · PWS PA7360017
Denver Boro
Operator location Denver, Pennsylvania - UCMR5 detected 2 PFAS compounds (lower-third PFAS panel (≤ 2 compounds)) on this PWS; SDWIS lists 101 violations and 3,861 people served.
- 3,861
- People served (this PWS)
- 101
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- 2 PFAS
- UCMR5 (this PWS)
Denver Boro standing, high SDWIS violation third
UCMR5 detected 2 PFAS compounds - lower-third PFAS panel (≤ 2 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). UCMR5: lower-third PFAS panel (≤ 2 compounds). Population rank #9,075 of 29,740 among systems serving 500+.
The verdict
Denver Boro sits in the upper third of the sitemap cohort by violation count (101), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (3,861; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 3% (middle-third health share (≤ 23%)). UCMR5 detected 2 PFAS compounds (lower-third PFAS panel (≤ 2 compounds)).
- #9,075 of 29,740
- Population · /systems
- #332 of 1,340
- Population · PA
- 101
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,492
- County
- Lancaster
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 92
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 10 | 2004 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2017 |
| TTHM | MR | 10 | 2017 |
| Coliform (TCR) | MR | 8 | 2004 |
| Di(2-ethylhexyl) phthalate | MR | 7 | 2023 |
| Di(2-ethylhexyl) adipate | MR | 7 | 2023 |
| CARBON, TOTAL | MR | 4 | 2016 |
| Nitrate | MR | 3 | 2006 |
| Groundwater Rule | MR | 2 | 2024 |
| Antimony, Total | MR | 2 | 1994 |
| LASSO | MR | 2 | 1995 |
| Benzo(a)pyrene | MR | 2 | 1995 |
| Pentachlorophenol | MR | 2 | 1995 |
| ETHYLENE DIBROMIDE | MR | 2 | 1995 |
| Aldicarb sulfoxide | MR | 2 | 1995 |
| Aldicarb sulfone | MR | 2 | 1995 |
| Hexachlorocyclopentadiene | MR | 2 | 1995 |
| Thallium, Total | MR | 2 | 1994 |
| Surface Water Treatment Rule | TT | 2 | 2020 |
| Nickel | MR | 2 | 1994 |
| Consumer Confidence Rule | Other | 2 | 1999 |
| Beryllium, Total | MR | 2 | 1994 |
| Chlorine | MR | 1 | 2004 |
| Interim Enhanced Surface Water Treatment Rule | MR | 1 | 2008 |
| p-Dichlorobenzene | MR | 1 | 1990 |
| 1,1-Dichloroethylene | MR | 1 | 1990 |
| 1,2-Dichloroethane | MR | 1 | 1990 |
| Carbon tetrachloride | MR | 1 | 1990 |
| Trichloroethylene | MR | 1 | 1990 |
| Public Notice | Other | 1 | 2020 |
Violation Count vs. the National Corpus
Denver Boro has 101 recorded EPA violations, 73% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 26% carry more. 3% of this system's own violations are health-based (3 of 101), and it ranks #9,075 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)
101 Around the middle fewer violations than 26% 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. 3 of 174 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFOA | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTrDA | 9/3/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 9/3/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| NMeFOSAA | 9/3/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 9/3/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFBS | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 9/3/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMBA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/3/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBA | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 8:2 FTS | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOA | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 9/3/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 6:2 FTS | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 9/3/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| ADONA | 9/3/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/3/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 9/3/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBS | 9/3/2025 | 4.30 ppt | 3.00 ppt | Detected |
| NEtFOSAA | 9/3/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeA | 9/3/2025 | 3.00 ppt | 3.00 ppt | Detected |
UCMR5 PFAS record for Denver Boro
Open EPA SDWIS federal reports for PWS PA7360017 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · Pennsylvania DEP, Bureau of Safe Drinking Water
Nationwide peers
101 violations · 3,861 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 Denver Boro
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Pennsylvania compares on the same EPA violation measures. Pennsylvania 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.