Deer Park · Community
Water in Deer Park
The record — five questions
16 of 18 questions answered from the record. 2 are still open — those are the next records to pull, shown here rather than left blank.
Who is in charge?
Who operates the water system?
Water system operator
City of Deer Park — Public Works Department handles water quality and operations (281-478-7270).
City of Deer Park, Utility Billing / Central Collections · deerparktx.gov/520
Water billing authority
The Utility Department, also known as Central Collections, bills and collects water and sewer revenue (281-478-7200).
City of Deer Park, Utility Billing / Central Collections · deerparktx.gov/520
Who regulates it, and under what public water system ID?
Regulator of record
The Texas Commission on Environmental Quality (TCEQ) regulates the system and holds boil-water-notice authority.
City of Deer Park / TCEQ notice · deerparktx.gov/1917, boil-water notice 2021-02-16
Public water system ID
PWS ID# TX1010007
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, p.1 masthead
Water contact of record
Nicholas Cook, 281-478-7205, DPWater@deerparktx.org
City of Deer Park / CCR 2025 · deerparktx.gov/1917 and CCR 2025 Source Water Assessment
Who sets the rate?
Not yet documented
No record has been located for this question yet.
Where does it come from?
Where does the water come from?
Source of supply
Deer Park purchases water from the City of Houston, which provides surface water from the Trinity River, located in Liberty County.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Sources of Water
Is it treated here, or bought already treated?
Treatment structure
The untreated purchased water is treated at the City of Deer Park surface water treatment plant.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Sources of Water
What backup supply exists if the primary source fails?
Backup supply
Groundwater from the Gulf Coast Aquifer in Harris County; the groundwater wells are designated for emergency use.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Sources of Water
What does it cost, and what shape is it in?
What does the latest water-quality report find?
Water-quality violations, Reporting Year 2025
No violations. Every regulated substance in the 2025 CCR reports Violation = No, including Barium 0.0503 ppm (MCL 2), HAA5 30.1 ppb (MCL 60), TTHMs 25.6 ppb (MCL 80), Nitrate 0.6 ppm (MCL 10) and Fluoride 0.12 ppm (MCL 4).
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Regulated Substances table
What are the lead and copper results?
Lead, 90th percentile
ND (not detected). Action level 15 ppb; 0 of 30 sites above the action level; no violation.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Lead and Copper table (sampled 2023)
Copper, 90th percentile
0.116 ppm. Action level 1.3 ppm; 0 of 30 sites above the action level; no violation.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Lead and Copper table (sampled 2023)
What unregulated substances were detected?
PFAS detected (unregulated, EPA UCMR5)
Six PFAS detected in 2025: PFBA 1.5, PFHxA 1.1, PFPeA 1.1, PFOS 0.9, PFBS 0.7, PFHxS 0.7 ppt. PFOA was not detected. The EPA has not established drinking water standards for these, so the report carries no MCL to rate them against.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Unregulated Substances table
Were any corrective actions required, and were they completed?
Corrective actions required and completed
Four corrective actions were required; three were completed. One Level 1 assessment was required and completed; the positive coliform sample was a false positive.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Level 1 Assessment Update
What is the base charge?
Residential base charge, effective 2025-10-01
$17.50 per month for 0 to 2,000 gallons, all meter sizes, residential inside city. Unchanged from the prior year.
Adopted Water Rates, effective 2025-10-01 · Deer Park WS Rates 09.30.2025, Residential Inside
What does water cost per 1,000 gallons?
Residential rate per 1,000 gallons, effective 2025-10-01
Increasing block: $6.77 for 2,001-6,000 gal; $8.12 for 6,001-10,000; $9.74 for 10,001-15,000; $11.69 above 15,000. The prior schedule was a flat $6.77 at every level above base, so the 2025-10-01 change is a change in structure, not an across-the-board increase.
Adopted Water Rates, effective 2025-10-01 · Deer Park WS Rates 09.30.2025, Residential Inside stepped rates
When — the record of events
Has the water ever stopped being safe to drink?
Boil-water notice, 2021-02-16 to 2021-02-21
TCEQ required a boil-water notice on 2021-02-16 due to low system pressure and the lack of available water during Winter Storm Uri. Rescinded 2021-02-21 at 2:30 PM CST. Duration 5 days.
City of Deer Park, Winter Storm 2021 updates · deerparktx.gov/1917, 'Boil Water Notice Rescinded - February 21, 2021'
When was the system last upgraded?
Advanced Metering Infrastructure replacement
12,262 water meters were installed city-wide. The project started in February 2024 and was completed in fall 2025.
City of Deer Park, AMI Project page · deerparktx.gov/2195
When was the system built?
Not yet documented
No record has been located for this question yet.
How it reaches you, and how it is paid for
How does the water reach homes?
Treatment structure
The untreated purchased water is treated at the City of Deer Park surface water treatment plant.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Sources of Water
Backup supply
Groundwater from the Gulf Coast Aquifer in Harris County; the groundwater wells are designated for emergency use.
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Sources of Water
How much is spent maintaining the mains?
Water mains capital outlay, FY2026-27 proposed
$0 proposed for FY2026-27 in both funds that carry the line (Water & Sewer Maintenance 49120 and the Capital Improvements Fund 49120), against $179,847 and $276,998 actually spent in FY2024-25.
City of Deer Park Proposed Budget FY 26-27 · Proposed Budget FY 26-27, dept 501 and Capital Improvements Fund, line 49120
Water mains and hydrants repairs and maintenance, FY2026-27 proposed
$145,343 proposed for FY2026-27. FY2025-26 was budgeted at $171,343 and estimated at $238,090; FY2024-25 actual was $75,240.
City of Deer Park Proposed Budget FY 26-27 · Proposed Budget FY 26-27, dept 501 line 44150
Water Treatment Plant department total, FY2026-27 proposed
$10,216,079 proposed for FY2026-27, against $5,024,717 estimated for FY2025-26 and $4,686,410 actual in FY2024-25.
City of Deer Park Proposed Budget FY 26-27 · Proposed Budget FY 26-27, Water & Sewer Fund expenditure summary, dept 503
How is the system funded?
How the system is funded
The water sewer system of the City of Deer Park is a self-supporting system. All revenue that is collected through water and sewer billing is only used to maintain the water sewer system.
City of Deer Park, Utility Billing / Central Collections · deerparktx.gov/520, Water and Sewer System
Water usage revenue, FY2024-25 actual
$7,988,751 in water usage revenue. Total Water & Sewer Fund expenditures were $14,182,451 in the same year.
City of Deer Park Proposed Budget FY 26-27 · Proposed Budget FY 26-27, Water & Sewer Fund revenues, line 32100
What it costs, against income
Affordability ruler
Not yet rendered — the rate is on the record above; a local household-income denominator is still owed.
Every answer here names its source. A question with no source renders as open — it is never filled in with an estimate.
Who serves this market
The same question asked at each level of government: who actually provides this, who supplies them, and who decides who is allowed to. Counts and ownership only — nobody is rated here.
Deer Park
Providers
1 provider
Derived by CLR from the city's own operations record · operands: dp.water.operator (deerparktx.gov/520) and dp.water.funding (deerparktx.gov/520)
Concentrated by physics
Natural. Retail water is a single-network service: one set of mains serves each address, so competing retail pipe networks are not built to the same house. Deer Park operates that network. This concentration is physical, not a rule that bars entry.
operands: dp.water.operator, dp.water.funding, dp.water.treatment (deerparktx.gov/520; CCR 2025)
Operates the system
City of Deer Park — public entity
City of Deer Park, Utility Billing / Central Collections · deerparktx.gov/520
Sells it wholesale
City of Houston — public entity
Consumer Confidence Report, Reporting Year 2025 · CCR 2025, Sources of Water
Entry is governed by
Municipal grant. The city operates the water and sewer system as a self-supporting utility and bills all water customers; no other retail provider serves city addresses.
City of Deer Park, Utility Billing / Central Collections · deerparktx.gov/520, Water and Sewer System
Harris County
Providers
68 establishments
U.S. Census Bureau, County Business Patterns 2022 · CBP 2022, NAICS 221310, Harris County TX (state 48, county 201)
A count, not a characterisation — no concentration measure has been documented at this level yet.
Texas
Providers
694 establishments
U.S. Census Bureau, County Business Patterns 2022 · CBP 2022, NAICS 221310, Texas (state 48)
Decides who may serve
Texas Commission on Environmental Quality — public entity
City of Deer Park / TCEQ notice · deerparktx.gov/1917, boil-water notice 2021-02-16
Entry is governed by
The Texas Commission on Environmental Quality regulates public water systems and holds boil-water-notice authority; Deer Park operates as PWS TX1010007 under that authority.
City of Deer Park / TCEQ notice · deerparktx.gov/1917, TCEQ boil-water notice 2021-02-16; PWS ID in CCR 2025
A count, not a characterisation — no concentration measure has been documented at this level yet.
United States
Providers
4,430 establishments
U.S. Census Bureau, County Business Patterns 2022 · CBP 2022, NAICS 221310, United States
A count, not a characterisation — no concentration measure has been documented at this level yet.
This is a map of who serves the market, not a rating of anyone in it. Every figure names its source; a claim about why a market is concentrated renders only when a record supports it.
The plain version
Turn on the tap in Deer Park and you're dealing with the city, not a private utility. Water and sewer service comes from the City of Deer Park Utility Department — billed by the city, maintained by city Public Works. That means the rates, the line repairs, and the water-quality reports are local decisions, set in city meetings and answerable to the council you elect, not to a distant corporation or a regional authority.
This page gathers where your water comes from, who to call when it goes out, how the city bills and tests it, and where the rates are set. Same promise as the rest of this hub: any figure we publish names the document behind it, and anything we can't source stays off the page.
By the numbers
Who provides your water and sewer
The City of Deer Park Utility Department (281-478-7221).
City of Deer Park, New Resident Basics (deerparktx.gov/1083).
How it's governed
A city function under Public Works, funded in the city's own budget — not a private or regional utility.
City of Deer Park Public Works.
Every figure here names its source. Editors verify before publication.
Related in the directory
Verified local businesses for this topic will appear here as the directory opens.