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MELROSE WSC

PWS ID: TX1740006 · NACOGDOCHES, Texas 75961-7953

MELROSE WSC serves 4,767 people in NACOGDOCHES, Texas using Groundwater water sources. It has 430 recorded EPA violations, including 7 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MELROSE WSC

MELROSE WSC is a local-owned community water system that delivers drinking water to 4,767 residents in NACOGDOCHES, Texas (Nacogdoches County) through 1,499 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 430 total violations for this system , of which 7 (2%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 370 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 Chlorine, recorded in 23 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 Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. MELROSE WSC's 430 violations sit above the Texas average. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%). 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
4,767
Total Violations
430
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,499
County
Nacogdoches
School/Daycare
No
MCL Violations
0
Monitoring Violations
370
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 23 2015
Lead and Copper Rule MR 23 2023
Public Notice Other 18 2025
E. COLI MR 16 2017
Revised Total Coliform Rule MON 16 2019
Consumer Confidence Rule Other 16 2022
Nitrate MR 15 2009
Endrin MR 15 2008
BHC-GAMMA MR 15 2008
Toxaphene MR 15 2008
Di(2-ethylhexyl) adipate MR 15 2008
Simazine MR 15 2008
Di(2-ethylhexyl) phthalate MR 15 2008
Hexachlorocyclopentadiene MR 15 2008
Atrazine MR 15 2008
LASSO MR 15 2008
Heptachlor epoxide MR 15 2008
HEXACHLOROBENZENE MR 15 2008
Heptachlor MR 15 2008
Benzo(a)pyrene MR 15 2008
Methoxychlor MR 15 2008
Chlordane MR 15 2008
Pentachlorophenol MR 15 2008
Coliform (TCR) MR 7 2015
Groundwater Rule TT 4 2019
Arsenic MR 3 2008
Barium MR 3 2008
Cadmium MR 3 2008
Chromium MR 3 2008
Fluoride MR 3 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 MELROSE WSC.

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 TX1740006 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Texas Drinking Water Authority

Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch is the primacy agency that licenses and inspects MELROSE WSC under EPA-delegated authority.

Open TX regulator portal

Source: Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch

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 Public Notice Other 18 SDWIS / TX1740006 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 3 SDWIS / TX1740006 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 3 SDWIS / TX1740006 / 5200
2023 Lead and Copper Rule MR 23 SDWIS / TX1740006 / 5000
2022 Consumer Confidence Rule Other 16 SDWIS / TX1740006 / 7000
2019 Revised Total Coliform Rule MON 16 SDWIS / TX1740006 / 8000
2019 Groundwater Rule TT 4 SDWIS / TX1740006 / 0700
2017 E. COLI MR 16 SDWIS / TX1740006 / 3014
2015 Chlorine MR 23 SDWIS / TX1740006 / 0999
2015 Coliform (TCR) MR 7 SDWIS / TX1740006 / 3100
2009 Nitrate MR 15 SDWIS / TX1740006 / 1040
2008 Endrin MR 15 SDWIS / TX1740006 / 2005
2008 BHC-GAMMA MR 15 SDWIS / TX1740006 / 2010
2008 Toxaphene MR 15 SDWIS / TX1740006 / 2020
2008 Di(2-ethylhexyl) adipate MR 15 SDWIS / TX1740006 / 2035

How MELROSE WSC Compares

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

Metric MELROSE WSC Texas avg Federal benchmark
Total violations 430 101.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 7 22.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 93.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 4,767 4,524 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.

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 MELROSE WSC water safe to drink? ▼
MELROSE WSC (PWS ID: TX1740006) has 430 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,767 people using Groundwater sources.
How many people does MELROSE WSC serve? ▼
MELROSE WSC serves 4,767 people in NACOGDOCHES, Texas. It is a Local-owned system using Groundwater water sources with 1,499 service connections.
What type of violations does MELROSE WSC have? ▼
MELROSE WSC has 430 total violations: 7 health-based violations (MCL exceedances or treatment failures), 370 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MELROSE WSC water? ▼
No PFAS testing data is available for MELROSE WSC under the EPA's UCMR5 monitoring program.
What water source does MELROSE WSC use? ▼
MELROSE WSC 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.

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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.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial