BRYN MAWR, PA · Delaware County
PSW RIDLEY CREEK Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of September 18, 2001. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Delaware County, PA.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.
System facts
- System ID (PWSID)
- PA1230011
- System type
- Community Water System
- Population served
- 36,975
- Service connections
- 12,666
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
PSW RIDLEY CREEK is one of 175 community water systems in Pennsylvania in the 10,001 to 100,000 people size category, formerly serving 36,975 people from surface water.
EPA's federal records list this system as inactive in 2001; the record below is historical.
As of August 1, 2026, its federal record holds 7 entries between 1982 and 1993, all of which EPA lists as closed. Nothing has been added since 1993.
All 7 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals and synthetic organic chemicals.
Violation history
Monitoring, Regular
—Nitrate
July 1, 1993 – September 30, 1993
ResolvedMonitoring, Regular
—Nitrate
April 1, 1993 – June 30, 1993
ResolvedMonitoring, Regular
—Chromium
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Nitrate
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Selenium
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Fluoride
June 25, 1984 – June 24, 1985
ArchivedMonitoring, Regular
—Endrin
June 24, 1982 – June 23, 1985
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 1993 – September 30, 1993 | Monitoring, Regular | Nitrate | — | Resolved |
| April 1, 1993 – June 30, 1993 | Monitoring, Regular | Nitrate | — | Resolved |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Chromium | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Nitrate | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Selenium | — | Archived |
| June 25, 1984 – June 24, 1985 | Monitoring, Regular | Fluoride | — | Archived |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | Endrin | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- November 22, 1985State Public Notification received8 linked violations
Last known contact on file (system is inactive)
Not on record
610-566-0217
BRYN MAWR, PA 190103489