Community Water System · PWS MD0040010
Paris Oaks / Days End
Prince Frederick, Maryland 20678 - drinking water served from groundwater sources to 251 people, tracked in EPA SDWIS and UCMR5.
- 251
- People served
- 3
- EPA violations
- 0
- Health-based
- Untested
- UCMR5 result
The verdict
EPA records 3 drinking-water violations at Paris Oaks / Days End - below the Maryland per-system average.
- 3
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
- 251
- People served by this system
- N/A
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Paris Oaks / Days End
Paris Oaks / Days End is a local-owned community water system that delivers drinking water to 251 residents in Prince Frederick, Maryland (Calvert County) through 88 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 3 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2 monitoring and reporting violations are on file. The most recent violation on record dates to 2014.
The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 2 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Maryland, EPA tracks 3,215 public water systems serving 6,070,211 people, with 60,496 cumulative violations and 18,132 health-based violations on record. About 80% of systems in the state carry at least one violation, and state-wide the average per system is 18.8 violations. Statewide, 50 of 83 UCMR5-tested systems have reported PFAS detections (60.2%).
Paris Oaks / Days End's 3 violations sit below the Maryland average.
All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 88
- County
- Calvert
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 2
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 2 | 2014 |
| Consumer Confidence Rule | Other | 1 | 2008 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Paris Oaks / Days End.
EPA SDWIS, Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID MD0040010 on SDWISSource: EPA SDWIS Federal Reports Search
Maryland Drinking Water Authority
Maryland's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.
Find MD regulator via EPA SDWISViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2014 | Lead and Copper Rule | MR | 2 | SDWIS / MD0040010 / 5000 |
| 2008 | Consumer Confidence Rule | Other | 1 | SDWIS / MD0040010 / 7000 |
How Paris Oaks / Days End Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Paris Oaks / Days End | Maryland avg | Federal benchmark |
|---|---|---|---|
| Total violations | 3 | 18.8 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 0 | 5.6 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 60.2% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 251 | 1,888 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,215 regulated public water systems in Maryland.
Federal MCL reference, Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026) |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is Paris Oaks / Days End water safe to drink? ▼
How many people does Paris Oaks / Days End serve? ▼
What type of violations does Paris Oaks / Days End have? ▼
Has PFAS been detected in Paris Oaks / Days End water? ▼
What water source does Paris Oaks / Days End use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.