Community Water System · PWS PA7670050
Glen Rock Water Auth
Operator location Glen Rock, Pennsylvania - upper-third violation load (> 74 violations) with 266 EPA violations; surface water source; 2,000 served (PWS-level, not municipal population).
- 2,000
- People served (this PWS)
- 266
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Glen Rock Water Auth standing, high SDWIS violation third
266 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%). Population rank #13,667 of 29,740 among systems serving 500+.
The verdict
Glen Rock Water Auth sits in the upper third of the sitemap cohort by violation count (266), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 2,000 (mid served population (≤ 3,309)). Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #13,667 of 29,740
- Population · /systems
- #531 of 1,340
- Population · PA
- 266
- 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.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 970
- County
- York
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 244
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 42 | 2025 |
| Chlorine | MR | 14 | 2025 |
| Nitrate | MR | 13 | 1996 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2013 |
| DICHLOROMETHANE | MR | 6 | 1990 |
| o-Dichlorobenzene | MR | 6 | 1990 |
| trans-1,2-Dichloroethylene | MR | 6 | 1990 |
| 1,2-Dichloropropane | MR | 6 | 1990 |
| Tetrachloroethylene | MR | 6 | 1990 |
| Ethylbenzene | MR | 6 | 1990 |
| Styrene | MR | 6 | 1990 |
| 1,1,2-Trichloroethane | MR | 6 | 1990 |
| CHLOROBENZENE | MR | 6 | 1990 |
| Toluene | MR | 6 | 1990 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 6 | 1990 |
| ETHYLENE DIBROMIDE | MR | 6 | 1990 |
| Lead and Copper Rule | MR | 6 | 1998 |
| cis-1,2-Dichloroethylene | MR | 5 | 1990 |
| Public Notice | Other | 4 | 2017 |
| Selenium | MR | 4 | 1995 |
| Fluoride | MR | 4 | 1995 |
| Mercury | MR | 4 | 1995 |
| Barium | MR | 4 | 1995 |
| p-Dichlorobenzene | MR | 4 | 1990 |
| 1,2-Dichloroethane | MR | 4 | 1990 |
| Trichloroethylene | MR | 4 | 1990 |
| Carbon tetrachloride | MR | 4 | 1990 |
| Benzene | MR | 4 | 1990 |
| Cadmium | MR | 4 | 1995 |
| Chromium | MR | 4 | 1995 |
Violation Count vs. the National Corpus
Glen Rock Water Auth has 266 recorded EPA violations, 89% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 11% carry more. 2% of this system's own violations are health-based (5 of 266), and it ranks #13,667 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)
266 Higher than most more violations than 89% 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
SDWIS compliance record for Glen Rock Water Auth
266 violations on record for PA7670050; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS · Pennsylvania DEP, Bureau of Safe Drinking Water
Nationwide peers
266 violations · 2,000 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 Glen Rock Water Auth
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.