Ramble Ridge Subdivision
What EPA’s and Texas’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.
- Serves
- 411 people
- Connections
- 137
- Water source
- Groundwater influenced by surface water
- Based in
- Houston, TX
- County
- Comal
- Owner
- Private
The ZIP code it serves
The short answer
1 result is above the health goal. The worst: Lead, above the health goal. 62 health-based violations since 2016.
What handles itWhat was found
Lead and copper: EPA SDWIS monitoring periods ending 2015 to 2023.
Total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, arsenic, chromium (total) and uranium: Texas’s own results, samples taken from Jan. 15, 2020 to Sept. 8, 2026, with EPA’s 2012 to 2019 file for earlier years.
Above the health goal1
Lead
Comes from pipes, often your own
3.2ppb
90th percentile, 2021 to 2023
In the latest period, 9 in 10 homes sampled were at or below 3.2 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.
What handles it
- NSF/ANSI 53 look for “Lead Reduction”
- NSF/ANSI 58 look for “Lead Reduction”
Below EPA’s limits4
Total trihalomethanes (TTHM)
Forms or is added in treatment
32.6ppb
Highest yearly average, 2021 to 2026
2026 average: 12.8 ppb
Averaged by year, the highest was 32.6 ppb, in 2021, below EPA’s legal limit of 80 ppb. Its highest single sample was 87.6 ppb. In 2026, the latest year on file, its six samples averaged 12.8 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 56.2 ppb, in 2016.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Haloacetic acids (HAA5)
Forms or is added in treatment
22.4ppb
Highest yearly average, 2021 to 2026
2026 average: 1.9 ppb
Averaged by year, the highest was 22.4 ppb, in 2021, below EPA’s legal limit of 60 ppb. Its highest single sample was 89.7 ppb. In 2026, the latest year on file, its six samples averaged 1.9 ppb. EPA recorded no violation for haloacetic acids (HAA5) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 42.2 ppb, in 2016.
What handles it
No certification claim covers this compound yet.
Nitrate
Comes from the source
3.3ppm
Highest sample; found in 33 of 33
2026, one sample: 1.5 ppm
The highest sample, in 2025, was 3.3 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 1.5 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 2.1 ppm, in 2014.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Fluoride
Forms or is added in treatment
0.28ppm
Highest yearly average, 2020 to 2026
2026: not found
Averaged by year, the highest was 0.28 ppm, in 2023, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.5 ppm. In 2026, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.53 ppm, in 2017.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “Fluoride”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Chromium (total)
- Uranium
What handles it
A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”
- NSF/ANSI 53
Claim: Lead Reduction
For: Lead
- NSF/ANSI 58
Claim: Lead Reduction
For: Lead
At the tap, or for the whole house?
Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.
Filters with those claims on a certifier’s listing
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: Lead
Culligan 10-Cup Pitcher with ZeroWater Technology (ZEROP10)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | May 1, 2026 to May 31, 2026 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | April 1, 2026 to April 30, 2026 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | March 1, 2026 to March 31, 2026 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Feb. 1, 2026 to Feb. 28, 2026 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Jan. 1, 2026 to Jan. 31, 2026 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Dec. 1, 2025 to Dec. 31, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Nov. 1, 2025 to Nov. 30, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Oct. 1, 2025 to Oct. 31, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Sept. 1, 2025 to Sept. 30, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Aug. 1, 2025 to Aug. 31, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | July 1, 2025 to July 31, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | June 1, 2025 to June 30, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | May 1, 2025 to May 31, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | April 1, 2025 to April 30, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | March 1, 2025 to March 31, 2025 | — | Archived |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Feb. 1, 2025 to Feb. 28, 2025 | — | Archived |
| Surface Water Treatment Rule | Water drawn from a river, lake or reservoir was not filtered as required.EPA: Failure to Filter (SWTR) | Feb. 1, 2025 | — | Unaddressed |
| Lead and Copper Rule Revisions | The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory | Oct. 17, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Oct. 1, 2024 to Oct. 31, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Sept. 1, 2024 to Sept. 30, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Aug. 1, 2024 to Aug. 31, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | July 1, 2024 to July 31, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | June 1, 2024 to June 30, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | May 1, 2024 to May 31, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | April 1, 2024 to April 30, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | March 1, 2024 to March 31, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Feb. 1, 2024 to Feb. 29, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Jan. 1, 2024 to Jan. 31, 2024 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Dec. 1, 2023 to Dec. 31, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Nov. 1, 2023 to Nov. 30, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Oct. 1, 2023 to Oct. 31, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Sept. 1, 2023 to Sept. 30, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Aug. 1, 2023 to Aug. 31, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | July 1, 2023 to July 31, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | June 1, 2023 to June 30, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | May 1, 2023 to May 31, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | April 1, 2023 to April 30, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | March 1, 2023 to March 31, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Feb. 1, 2023 to Feb. 28, 2023 | — | Resolved |
| Long Term 2 Enhanced Surface Water Treatment Rule | Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR) | Jan. 1, 2023 to Jan. 31, 2023 | — | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 113 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, fluoride, arsenic, chromium (total) and uranium results here are Texas’s own from 2020 on, with EPA’s national file for 2012 to 2019. Ramble Ridge Subdivision’s own annual report, which it must send you every year, has the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Texas’s results run from Jan. 15, 2020 to Sept. 8, 2026.
Testing your own tap
The 3 labs Texas certifies closest to the area Ramble Ridge Subdivision serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Wallgren Environmental Services dba Pollution Control Services
Universal City, TX · about 8 miles
Certified for bacteria, lead and copper
Alamo Analytical Laboratories, Ltd.
San Antonio, TX · about 12 miles
Certified for lead and copper
San Antonio Testing Laboratory, LLC
San Antonio, TX · about 19 miles
Certified for bacteria, lead and copper
Texas Well Owner Network, Texas A&M AgriLife Extension: Well Informed screening events, where well owners bring in water samples to be screened for common contaminants, followed by an hour-long session explaining the results. Upcoming events are on the network's calendar. Trainings, Texas Well Owner Network.
All 80 certified labs for TexasSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Texas Commission on Environmental Quality, Texas Drinking Water Viewer, results from Jan. 7, 2020 to Oct. 6, 2026, read Oct. 16, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: TCEQ, drinking water laboratories approved for public water system samples, read Oct. 10, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID TX0460243. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Read up on LeadWhat each one does to health, where it comes from, and the certification claim that addresses it.About Lead
- Get the utility’s own reportRamble Ridge Subdivision must send you a water quality report every year. It covers contaminants this page does not show.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Compare certified filtersWhat the filters certified for these results cost over five years, cartridges included.Compare five-year costs