- Free modem and anti-virus software
- No contracts and unlimited data
- Bundle with TV to save more
- Speeds up to 7 Gbps**
Electricity
Electric Providers in Castle Hills
CPS Energy
Rates accurate as of October 27, 2026
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Natural Gas
Natural Gas Providers in Castle Hills
Rates accurate as of October 27, 2026
Internet
Top 9 Internet Providers in Castle Hills
AT&T Fiber
Get a $200 Reward Card*
- Speeds up to
- 5 Gbps
- Type
- Fiber
- Data cap
- Unlimited
- Availability
- 96.58%
Spectrum
Most Affordable Plans
- Speeds up to
- 7 Gbps**
- Type
- Cable & Fiber
- Data cap
- Unlimited
- Availability
- 82.99%
Starlink
Internet Anywhere You Are
- Speeds up to
- 400 Mbps
- Type
- Satellite
- Data cap
- Unlimited
- Availability
- 100%
Verizon 5G Home Internet
Wireless Internet Great for Renters
- Speeds up to
- 300 Mbps
- Type
- 5G
- Data cap
- Unlimited
- Availability
- 100%
T-Mobile 5G Home Internet
Wireless Internet
- Speeds up to
- 498 Mbps
- Type
- 5G
- Data cap
- 1.2 TB
- Availability
- 100%
AT&T Air
Wireless Internet
- Speeds up to
- 300 Mbps
- Type
- 5G
- Data cap
- Unlimited
- Availability
- 100%
- Speeds up to
- 150 Mbps
- Type
- Satellite
- Data cap
- 150-850 GB
- Availability
- 100%
- Speeds up to
- Varies
- Type
- Fiber, Cable, 5G, & Satellite
- Data cap
- Varies
- Availability
- 95%
From
$39.95
/mo
Call 866-452-1131
- Speeds up to
- 5 Gbps
- Type
- Cable
- Data cap
- 1 TB
- Availability
- 48.15%
*Not all internet providers and speeds are available at every address.
**7 Gbps speed is available in select markets.
Water & Sewage Providers in Castle Hills
SAWS CASTLE HILLS
PO BOX 2449 Castle Hills, TX 78298-2449
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Utilities Summary for Castle Hills, TX
| Electric Companies: | 1 |
| Natural Gas Companies: | 1 |
| Water & Sewage Providers: | 1 |
| Municipal Electricity: | No |
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Castle Hills Internet Connectivity
Broadband Availability
93.8221%
Percent of population with access to speeds of 100 Mbps download and 20 Mbps upload
1 Gig Availability
76.5651%
Percent of population with access to download speeds of 1 Gbps
Fiber Availability
76.4827%
Percent of population with access to fiber Internet
Fastest Internet Providers in Castle Hills
| Provider | Connection Type | Download Speed |
|---|---|---|
| AT&T Fiber | Fiber | 5 Gbps |
| Spectrum | Cable & Fiber | 7 Gbps |
| Starlink | Satellite | 400 Mbps |
| Verizon 5G Home Internet | 5G | 300 Mbps |
| T-Mobile 5G Home Internet | 5G | 498 Mbps |
| AT&T Air | 5G | 300 Mbps |
| Viasat | Satellite | 150 Mbps |
| Earthlink | Fiber, Cable, 5G, & Satellite | Varies |
| Astound Broadband | Cable | 5 Gbps |
*Not all speeds available in all areas
Castle Hills Drinking Water Quality Information
Clean drinking water is essential for maintaining good health and overall well-being. Safe, contaminant-free water helps prevent the spread of diseases, supports proper hydration, and ensures the body's vital functions operate smoothly.
Castle Hills's Primary Drinking Water Source: Ground Water
Drinking Water Contaminant Levels
Lead
5.7 ppb
Health standard: 0 ppb
Legal limit: 15 ppb
Legal limit: 15 ppb
Chlorate
32 ppb
Health standard: 210 ppb
Legal limit: No Limit Set
Legal limit: No Limit Set
Chromium (hexavalent)
0.0887 ppb
Health standard: 0.02 ppb
Legal limit: No Limit Set
Legal limit: No Limit Set
Perfluorobutane Sulfonate (PFBS)
0.0032 ppb
Health standard: 0.001 ppb
Legal limit: No Limit Set
Legal limit: No Limit Set
Perfluorooctane Sulfonate (PFOS)
0.004 ppb
Health standard: 0 ppb
Legal limit: 0.004 ppb
Legal limit: 0.004 ppb
Strontium
404.1667 ppb
Health standard: 1.5 ppm
Legal limit: No Limit Set
Legal limit: No Limit Set
Vanadium
2.3167 ppb
Health standard: 21 ppb
Legal limit: No Limit Set
Legal limit: No Limit Set
Contaminant Data Based on Averages of SDWA LCR Samples and UCMR 3, UCMR 4, and UCMR 5 Samples. Health standards are based on guidelines set by the EPA, WHO, or state health departments. Health standards are based on possible negative health side effects if that level of contaminant is exceeded. Legal limits are set and enforced by EPA regulations.
Utilities in Nearby Cities
Frequently Asked Questions
Can I choose my electric company in Castle Hills?
Yes, the state of Texas has deregulated electric utilities. Deregulation allows for multiple electric providers within each city and lets customers choose or switch to a provider or plan best fits their needs. Assuming your area has started allowing retail electric competition, you can choose between CPS Energy or any of the 1 electric providers available in Castle Hills.
Can I choose my natural gas utility provider in Castle Hills, TX?
No, Texas has not deregulated its natural gas utilities. The primary gas company in Castle Hills is Texas Gas Service.
Does Castle Hills offer municipal electricity services?
No, Castle Hills does not provide municipal electric service to it's residents. However, it is likely that there are essential municipal services offered to the Castle Hills area, like providing safe and clean water, handling sewage treatment and wastewater disposal by Saws Castle Hills.
Who is the fastest internet provider in Castle Hills?
AT&T Fiber is the fastest internet service provider in Castle Hills, offering speeds up to 5 Gbps to 96.58% of the city.