Public water system record
Aqua PA Main System
Serves an area of Montgomery County, Delaware County and 1 more county, PA that includes King of Prussia, Plymouth Meeting, Drexel Hill and 63 more places · 822,600 people served
Federal records show 2 health-based violations and 44 monitoring/reporting issues for Aqua PA Main System in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 44
Key facts
- Aqua PA Main System draws water from 22 wells and 8 surface water intakes (6 of them for emergency, seasonal or other part-time use).
- Record on file since 1991, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 98 lead and 59,126 unknown out of 304,156 service lines.
Check whether Aqua PA Main System serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 1, 2024 | Resolved | No |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Jul 1, 2017 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorite
Monitoring and reporting
|
Sep 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Public Notice
OTHER
|
Nov 13, 2024 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Chlorite
Monitoring and reporting
|
Jun 1, 2021 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorite
Monitoring and reporting
|
May 1, 2019 | Resolved |
|
Chlorite
Monitoring and reporting
|
Dec 1, 2018 | Resolved |
|
Groundwater Rule
Monitoring and reporting
|
Mar 1, 2018 | Resolved |
Full record since 1991
EPA's records for Aqua PA Main System go back to 1991. Before October 19, 2016 they list 5 health-based violations (4 resolved, 1 archived by EPA without a recorded fix) and 69 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 3 | 0 |
| 2000s | 0 | 13 |
| 2010 to October 18, 2016 | 2 | 56 |
| October 19, 2016 to 2019 | 1 | 3 |
| 2020s | 1 | 41 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2013, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2013 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 2011 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1992 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1992 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1991 | Archived |
What the violations mean
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Aqua PA Main System draws water from 22 wells and 8 surface water intakes (6 of them for emergency, seasonal or other part-time use). It also buys water from Chester Water Authority, Philadelphia Water Department, Phoenixville Water Dept, Aqua PA West Chester, Aqua PA Bensalem, Aqua PA Uwchlan and Bcwsa Main Lower South. 7 other community water systems and 8 smaller public systems such as schools, businesses or campgrounds buy water from Aqua PA Main System. 5 other public water systems have emergency connections to Aqua PA Main System.
Buys water from
- Chester Water Authority Chester, PA
- Philadelphia Water Department Philadelphia, PA
- Phoenixville Water Dept Phoenixville, PA
- Aqua PA West Chester Bryn Mawr, PA
- Aqua PA Bensalem Bryn Mawr, PA
- Aqua PA Uwchlan Bryn Mawr, PA
- Bcwsa Main Lower South Warrington, PA
Community systems that buy water from it
- Aqua PA Bensalem Bryn Mawr, PA
- Aqua PA Hatboro Bryn Mawr, PA
- Aqua PA Uwchlan Bryn Mawr, PA
- Aqua PA West Chester Bryn Mawr, PA
- Horsham Water&Sewer Authority Horsham, PA
- PA American Norristown Norristown, PA
- Warwick Twp Water & Sewer Auth Jamison, PA
Annual water quality report
Aqua PA Main System must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Pennsylvania.
Certified drinking water labs by state EPA guidance for private wells