C58/100
Nacogdoches Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 70,369 residents · Texas
What's In Nacogdoches's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
7
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: February 1, 2025 – February 28, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: June 1, 2024 – July 17, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: November 1, 2023 – November 30, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – July 31, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2023 – May 31, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: December 1, 2022 – July 17, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: November 1, 2021 – November 30, 2021Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
CITY OF NACOGDOCHES
Population Served
50,226
Water Source
Surface Water
System ID
TX1740003
APPLEBY WSC
Population Served
5,745
Water Source
Groundwater
System ID
TX1740005
MELROSE WSC
Population Served
4,767
Water Source
Groundwater
System ID
TX1740006
CARO WSC
Population Served
2,412
Water Source
Groundwater
System ID
TX1740007
LILLY GROVE SUD
Population Served
2,435
Water Source
Groundwater
System ID
TX1740014
SWIFT WSC
Population Served
2,547
Water Source
Groundwater
System ID
TX1740019
WODEN WSC
Population Served
2,237
Water Source
Groundwater
System ID
TX1740020
Frequently Asked Questions About Nacogdoches Water
Is Nacogdoches tap water safe to drink?
Nacogdoches, Texas tap water receives a grade of C (58/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 278 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Nacogdoches's water?
Of the 70 contaminants tested in Nacogdoches's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Nacogdoches have any water quality violations?
Yes, Nacogdoches has 278 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MON, RPT. 17 of these are health-based violations, which are the most serious category.
Do I need a water filter in Nacogdoches?
Based on EPA data, using a water filter in Nacogdoches is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Nacogdoches's tap water come from?
Nacogdoches's drinking water is sourced from surface water and supplied by CITY OF NACOGDOCHES and 6 other water system(s). The system serves approximately 70,369 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Nacogdoches's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Nacogdoches's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Nacogdoches's water compare to other cities in Texas?
Nacogdoches's water quality score of 58/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Nacogdoches's water quality?
If you have concerns about Nacogdoches's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (CITY OF NACOGDOCHES) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.