B68/100
Deer Park Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 34,495 residents · Texas
What's In Deer Park's Tap Water?
69
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.004 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
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 DEER PARK
Population Served
34,495
Water Source
Purchased Surface Water
System ID
TX1010007
Frequently Asked Questions About Deer Park Water
Is Deer Park tap water safe to drink?
Deer Park, Texas tap water receives a grade of B (68/100), which is considered good. Out of 69 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Deer Park's water?
Of the 69 contaminants tested in Deer Park's water supply, the most notable include PFOS. 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Deer Park have any water quality violations?
Yes, Deer Park has 16 EPA violation(s) on record, with the most recent in 2019. Violation types include MR, TT, Other. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Deer Park?
Based on EPA data, using a water filter in Deer Park 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 Deer Park's tap water come from?
Deer Park's drinking water is sourced from purchased surface water and supplied by CITY OF DEER PARK. The system serves approximately 34,495 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Deer Park'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. Deer Park'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 Deer Park's water compare to other cities in Texas?
Deer Park's water quality score of 68/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Deer Park's water quality?
If you have concerns about Deer Park'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 DEER PARK) 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.