Community Water System · PWS PA5020004
Blawnox Boro Water Dept
Operator location Pittsburgh, Pennsylvania - 43% of 176 violations are health-based (upper-third health share (> 23%)); surface water source; 2,200 served per SDWIS.
- 2,200
- People served (this PWS)
- 176
- EPA violations (this PWS)
- 75
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Blawnox Boro Water Dept standing, high SDWIS violation third
43% of 176 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 43% is upper-third health share (> 23%). Population rank #12,880 of 29,740 among systems serving 500+.
The verdict
Blawnox Boro Water Dept sits in the upper third of the sitemap cohort by violation count (176), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 2,200 (mid served population (≤ 3,309)). Health-based share is 43% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #12,880 of 29,740
- Population · /systems
- #497 of 1,340
- Population · PA
- 176
- Total EPA violations on record
- 43%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 731
- County
- Allegheny
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 44
- Treatment Tech Violations
- 75
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 75 | 2023 |
| Public Notice | Other | 47 | 2024 |
| TTHM | MR | 10 | 2016 |
| Total Haloacetic Acids (HAA5) | MR | 9 | 2016 |
| Revised Total Coliform Rule | MON | 7 | 2025 |
| Cadmium | MR | 5 | 1989 |
| Surface Water Treatment Rule | MR | 5 | 2011 |
| Lead and Copper Rule | MR | 4 | 1993 |
| Consumer Confidence Rule | Other | 3 | 2004 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2009 |
| Coliform (TCR) | MR | 1 | 2011 |
| Chlorine | MR | 1 | 2011 |
Violation Count vs. the National Corpus
Blawnox Boro Water Dept has 176 recorded EPA violations, 83% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 16% carry more. 43% of this system's own violations are health-based (75 of 176), and it ranks #12,880 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)
176 Higher than most more violations than 83% 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
Health-based violations on Blawnox Boro Water Dept
75 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for PA5020004.
Sources: EPA SDWIS · Pennsylvania DEP, Bureau of Safe Drinking Water
Nationwide peers
176 violations · 2,200 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Blawnox Boro Water Dept
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.