BLACKWATER NAT. WILDLIFE REFUGE
PWS ID: MD1091005 · CAMBRIDGE, Maryland 21613
BLACKWATER NAT. WILDLIFE REFUGE serves 30 people in CAMBRIDGE, Maryland using Groundwater water sources. It has a clean compliance record with no EPA violations recorded. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: BLACKWATER NAT. WILDLIFE REFUGE
BLACKWATER NAT. WILDLIFE REFUGE is a private-owned transient non-community water system that delivers drinking water to 30 residents in CAMBRIDGE, Maryland (Dorchester County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 0 total violations for this system , giving it a clean Safe Drinking Water Act compliance record.
No specific contaminant violations have been recorded in EPA's detailed violation register for this system. 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. BLACKWATER NAT. WILDLIFE REFUGE's 0 violations sit below the Maryland average. Statewide, 50 of 83 UCMR5-tested systems have reported PFAS detections (60.2%). 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
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Dorchester
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
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 BLACKWATER NAT. WILDLIFE REFUGE.
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 MD1091005 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 SDWISHow BLACKWATER NAT. WILDLIFE REFUGE Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | BLACKWATER NAT. WILDLIFE REFUGE | Maryland avg | Federal benchmark |
|---|---|---|---|
| Total violations | 0 | 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 | 30 | 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 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is BLACKWATER NAT. WILDLIFE REFUGE water safe to drink? ▼
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What type of violations does BLACKWATER NAT. WILDLIFE REFUGE have? ▼
Has PFAS been detected in BLACKWATER NAT. WILDLIFE REFUGE water? ▼
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Where does this data come from? ▼
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Related Data for Maryland
Read our methodology — how this data is sourced, computed, and verified.