Community Water System · PWS PA7010053
Walnut Grove Mhc
Operator location Farmington Hills, Pennsylvania - 0% of 101 violations are health-based (lower-third health share (≤ 1%)); groundwater source; 425 served per SDWIS.
- 425
- People served (this PWS)
- 101
- EPA violations (this PWS)
- 0
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Walnut Grove Mhc standing, high SDWIS violation third
0% of 101 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%).
The verdict
Walnut Grove Mhc 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 smaller (425; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is only 0% - almost all of this trail is monitoring or reporting. No UCMR5 PFAS test appears for this system in this extract.
- 101
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
- 425
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 167
- County
- Adams
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 88
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 12 | 2020 |
| Consumer Confidence Rule | Other | 11 | 2008 |
| Coliform (TCR) | MR | 6 | 2015 |
| Barium | MR | 2 | 2003 |
| Cadmium | MR | 2 | 2003 |
| Chromium | MR | 2 | 2003 |
| Fluoride | MR | 2 | 2003 |
| Mercury | MR | 2 | 2003 |
| Nickel | MR | 2 | 2003 |
| Selenium | MR | 2 | 2003 |
| Antimony, Total | MR | 2 | 2003 |
| Beryllium, Total | MR | 2 | 2003 |
| Public Notice | Other | 2 | 2009 |
| Groundwater Rule | MR | 2 | 2020 |
| Xylenes, Total | MR | 2 | 1998 |
| DICHLOROMETHANE | MR | 2 | 1998 |
| 1,1-Dichloroethylene | MR | 2 | 1998 |
| 1,2-Dichloroethane | MR | 2 | 1998 |
| 1,1,1-Trichloroethane | MR | 2 | 1998 |
| Carbon tetrachloride | MR | 2 | 1998 |
| 1,1,2-Trichloroethane | MR | 2 | 1998 |
| Ethylbenzene | MR | 2 | 1998 |
| Trichloroethylene | MR | 2 | 1998 |
| Benzene | MR | 2 | 1998 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 2022 |
| o-Dichlorobenzene | MR | 2 | 1998 |
| Thallium, Total | MR | 2 | 2003 |
| CHLOROBENZENE | MR | 2 | 1998 |
| p-Dichlorobenzene | MR | 2 | 1998 |
| Arsenic | MR | 2 | 2003 |
Violation Count vs. the National Corpus
Walnut Grove Mhc has 101 recorded EPA violations, 73% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 26% carry more. 0% of this system's own violations are health-based (0 of 101), and it ranks unranked 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
Health-based violations on Walnut Grove Mhc
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for PA7010053.
Sources: EPA SDWIS · Pennsylvania DEP, Bureau of Safe Drinking Water
Nationwide peers
101 violations · 425 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.
What to do with Walnut Grove Mhc
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.