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Community Water System · PWS NC0392355

Middle Creek Master

Cary, North Carolina 27511 - drinking water served from groundwater sources to 681 people, tracked in EPA SDWIS and UCMR5.

681
People served
136
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 136 drinking-water violations at Middle Creek Master, 2% of them health-based - above the North Carolina per-system average.

136
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
681
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Middle Creek Master

Middle Creek Master is a private-owned community water system that delivers drinking water to 681 residents in Cary, North Carolina (Wake County) through 268 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 136 total violations for this system , of which 3 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 113 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Arsenic, recorded in 7 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 North Carolina, EPA tracks 5,020 public water systems serving 9,877,724 people, with 524,053 cumulative violations and 38,492 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 104.4 violations. Statewide, 174 of 287 UCMR5-tested systems have reported PFAS detections (60.6%).

Middle Creek Master's 136 violations sit above the North Carolina average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
681
Total Violations
136
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
268
County
Wake
School/Daycare
No
MCL Violations
3
Monitoring Violations
113
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MR 7 1988
Consumer Confidence Rule Other 6 2024
Gross Alpha, Excl. Radon and U MR 5 1987
Nitrate MR 5 1995
Coliform (TCR) MCL 3 1996
Atrazine MR 3 1998
Simazine MR 3 1998
OXAMYL MR 3 1998
Dalapon MR 3 1998
Toxaphene MR 3 1998
Hexachlorocyclopentadiene MR 3 1998
Dinoseb MR 3 1998
Endrin MR 3 1998
Pentachlorophenol MR 3 1998
HEXACHLOROBENZENE MR 3 1998
2,4-D MR 3 1998
Heptachlor epoxide MR 3 1998
2,4,5-TP MR 3 1998
Picloram MR 3 1998
Di(2-ethylhexyl) adipate MR 3 1998
Methoxychlor MR 3 1998
ETHYLENE DIBROMIDE MR 3 1998
Heptachlor MR 3 1998
1,2-DIBROMO-3-CHLOROPROPANE MR 3 1998
BHC-GAMMA MR 3 1998
Total Polychlorinated Biphenyls (PCB) MR 3 1998
LASSO MR 3 1998
Chlordane MR 3 1998
Benzo(a)pyrene MR 3 1998
Carbofuran MR 3 1998

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 Middle Creek Master.

Federal Source of Truth

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 NC0392355 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

North Carolina Drinking Water Authority

North Carolina DEQ, Public Water Supply Section is the primacy agency that licenses and inspects Middle Creek Master under EPA-delegated authority.

Open NC regulator portal

Source: North Carolina DEQ, Public Water Supply Section

Violation 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
2024 Consumer Confidence Rule Other 6 SDWIS / NC0392355 / 7000
1998 Atrazine MR 3 SDWIS / NC0392355 / 2050
1998 Simazine MR 3 SDWIS / NC0392355 / 2037
1998 OXAMYL MR 3 SDWIS / NC0392355 / 2036
1998 Dalapon MR 3 SDWIS / NC0392355 / 2031
1998 Toxaphene MR 3 SDWIS / NC0392355 / 2020
1998 Hexachlorocyclopentadiene MR 3 SDWIS / NC0392355 / 2042
1998 Dinoseb MR 3 SDWIS / NC0392355 / 2041
1998 Endrin MR 3 SDWIS / NC0392355 / 2005
1998 Pentachlorophenol MR 3 SDWIS / NC0392355 / 2326
1998 HEXACHLOROBENZENE MR 3 SDWIS / NC0392355 / 2274
1998 2,4-D MR 3 SDWIS / NC0392355 / 2105
1998 Heptachlor epoxide MR 3 SDWIS / NC0392355 / 2067
1998 2,4,5-TP MR 3 SDWIS / NC0392355 / 2110
1998 Picloram MR 3 SDWIS / NC0392355 / 2040

How Middle Creek Master Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Middle Creek Master North Carolina avg Federal benchmark
Total violations 136 104.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 7.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 681 1,968 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,020 regulated public water systems in North Carolina.

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 Middle Creek Master water safe to drink? ▼
Middle Creek Master (PWS ID: NC0392355) has 136 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 681 people using Groundwater sources.
How many people does Middle Creek Master serve? ▼
Middle Creek Master serves 681 people in Cary, North Carolina. It is a Private-owned system using Groundwater water sources with 268 service connections.
What type of violations does Middle Creek Master have? ▼
Middle Creek Master has 136 total violations: 3 health-based violations (MCL exceedances or treatment failures), 113 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Middle Creek Master water? ▼
No PFAS testing data is available for Middle Creek Master under the EPA's UCMR5 monitoring program.
What water source does Middle Creek Master use? ▼
Middle Creek Master uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

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.