NORTH COLLIN SUD
PWSID: TX0430055 · Melissa, TX · Serves 10,716 people
According to EPA Safe Drinking Water Information System (SDWIS), NORTH COLLIN SUD (PWSID TX0430055) in Melissa, TX is listed as a CWS water system covering about 10,716 people. The same extract lists 1 health-based violation record spanning 2025-2025. Those 1 health-based row for NORTH COLLIN SUD cover contaminants such as Revised Total Coliform Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
NORTH COLLIN SUD has 1 health-based violation record in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Revised Total Coliform Rule. Recorded violations span 2025–2025. Day-to-day primacy enforcement for this system runs through the Texas drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Texas state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- TX0430055
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Melissa, TX
- Population Served
- 10,716
- Health Violations
- Yes (1)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Revised Total Coliform Rule | 1 | 1 |
Violation History (1)
| Contaminant | Health | Date |
|---|---|---|
| Revised Total Coliform Rule | Yes | May 24, 2025 |
Frequently Asked Questions
What does EPA SDWIS list for NORTH COLLIN SUD?
How many people does NORTH COLLIN SUD serve?
What violations does NORTH COLLIN SUD have?
What contaminants have been found in NORTH COLLIN SUD water?
Compare beyond Texas
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest NORTH COLLIN SUD on cumulative violation count (1) and EPA-reported population served (10,716). Violation-count peers include CHOCTAW - CONEHATTA, CHOCTAW - PEARL RIVER, CHOCTAW - TUCKER. Population peers include NJ AMERICAN WATER - WASHINGTON/OXFORD, BARNESVILLE, SOUTHWEST OUACHITA WATERWORKS, INC.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
NORTH COLLIN SUD (TX0430055) is drawn from EPA SDWIS. Nearby county systems in this extract include CITY OF PLANO; CITY OF FRISCO; CITY OF MCKINNEY; CITY OF ALLEN. Health-based rows (1 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.