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States → North Carolina

Community Water System · PWS NC0190010

Monroe, City Of

Monroe, North Carolina 28111 - drinking water served from surface water sources to 43,081 people, tracked in EPA SDWIS and UCMR5.

43,081
People served
90
EPA violations
28
Health-based
2 PFAS
UCMR5 result

The verdict

EPA records 90 drinking-water violations at Monroe, City Of, 31% of them health-based - below the North Carolina per-system average, and UCMR5 testing detected 2 PFAS compounds.

90
Total EPA violations on record
31%
Health-based (MCL / treatment failure)
43,081
People served by this system
2
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Monroe, City Of

Monroe, City Of is a local-owned community water system that delivers drinking water to 43,081 residents in Monroe, North Carolina (Union County) through 13,064 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 90 total violations for this system , of which 28 (31%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 42 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Dalapon, recorded in 11 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 2 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 6.9 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

Monroe, City Of's 90 violations sit below 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.

PFAS Detected

2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
43,081
Total Violations
90
Health-Based Violations
28
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
13,064
County
Union
School/Daycare
No
MCL Violations
28
Monitoring Violations
42
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Dalapon MR 11 2006
Total Haloacetic Acids (HAA5) MCL 10 2003
TTHM MCL 10 2003
Public Notice Other 9 2010
TTHM MR 9 2024
Revised Total Coliform Rule RPT 8 2025
Total Haloacetic Acids (HAA5) MR 8 2024
Revised Total Coliform Rule MCL 8 2025
CARBON, TOTAL MR 5 2004
2,4-D MR 5 2008
Endrin MR 4 1981

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 5 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFBS 9/21/2023 3.10 ppt 3.00 ppt Detected
PFEESA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/21/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 9/21/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/21/2023 <4.00 ppt 4.00 ppt Not Detected
PFTA 9/21/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 9/21/2023 <7.00 ppt 7.00 ppt Not Detected
PFPeA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/21/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/21/2023 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 9/21/2023 <5.00 ppt 5.00 ppt Not Detected
PFDoA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/21/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/21/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/21/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/21/2023 <2.00 ppt 2.00 ppt Not Detected
9Cl-PF3ONS 9/21/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/21/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/21/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/21/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/21/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/21/2023 <4.00 ppt 4.00 ppt Not Detected
NEtFOSAA 8/2/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 8/2/2023 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 8/2/2023 <6.00 ppt 6.00 ppt Not Detected
PFTA 8/2/2023 <8.00 ppt 8.00 ppt Not Detected
8:2 FTS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/26/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
PFNA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 7/26/2023 4.70 ppt 3.00 ppt Detected

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 Monroe, City Of.

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 NC0190010 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 Monroe, City Of 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
2025 Revised Total Coliform Rule RPT 8 SDWIS / NC0190010 / 8000
2025 Revised Total Coliform Rule MCL 8 SDWIS / NC0190010 / 8000
2024 TTHM MR 9 SDWIS / NC0190010 / 2950
2024 Total Haloacetic Acids (HAA5) MR 8 SDWIS / NC0190010 / 2456
2010 Public Notice Other 9 SDWIS / NC0190010 / 7500
2008 2,4-D MR 5 SDWIS / NC0190010 / 2105
2006 Dalapon MR 11 SDWIS / NC0190010 / 2031
2004 CARBON, TOTAL MR 5 SDWIS / NC0190010 / 2920
2003 Total Haloacetic Acids (HAA5) MCL 10 SDWIS / NC0190010 / 2456
2003 TTHM MCL 10 SDWIS / NC0190010 / 2950
1981 Endrin MR 4 SDWIS / NC0190010 / 2005

How Monroe, City Of Compares

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

Metric Monroe, City Of North Carolina avg Federal benchmark
Total violations 90 104.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 28 7.7 Indicates a contaminant exceeded a federal MCL
PFAS detection 2 compounds 60.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 43,081 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 Monroe, City Of water safe to drink? ▼
Monroe, City Of (PWS ID: NC0190010) has 90 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 2 PFAS compounds found. This system serves 43,081 people using Surface Water sources.
How many people does Monroe, City Of serve? ▼
Monroe, City Of serves 43,081 people in Monroe, North Carolina. It is a Local-owned system using Surface Water water sources with 13,064 service connections.
What type of violations does Monroe, City Of have? ▼
Monroe, City Of has 90 total violations: 28 health-based violations (MCL exceedances or treatment failures), 42 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Monroe, City Of water? ▼
Yes. UCMR5 testing detected 2 PFAS compounds in Monroe, City Of's water supply: PFBS, PFBA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Monroe, City Of use? ▼
Monroe, City Of uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.