Community Water System · PWS TX1010111
Castlewood Subdivision
Operator location Cypress, Texas - upper-third violation load (> 74 violations) with 111 EPA violations; groundwater source; 1,053 served (PWS-level, not municipal population).
- 1,053
- People served (this PWS)
- 111
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Castlewood Subdivision standing, high SDWIS violation third
111 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). Population rank #18,953 of 29,740 among systems serving 500+.
The verdict
Castlewood Subdivision sits in the upper third of the sitemap cohort by violation count (111), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,053 (mid served population (≤ 3,309)). Health-based share is 3% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #18,953 of 29,740
- Population · /systems
- #2,221 of 3,040
- Population · TX
- 111
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 351
- County
- Harris
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 83
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 44 | 2021 |
| Public Notice | Other | 21 | 2022 |
| Chlorine | MR | 8 | 2018 |
| TTHM | MR | 4 | 2011 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2011 |
| Nitrate | MR | 4 | 2013 |
| Lead and Copper Rule | MR | 4 | 2015 |
| Combined Uranium | MR | 4 | 2016 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2016 |
| Combined Radium (-226 and -228) | MR | 4 | 2016 |
| Coliform (TCR) | MCL | 3 | 2010 |
| Coliform (TCR) | MR | 3 | 2010 |
Violation Count vs. the National Corpus
Castlewood Subdivision has 111 recorded EPA violations, 75% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 25% carry more. 3% of this system's own violations are health-based (3 of 111), and it ranks #18,953 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
111 Around the middle fewer violations than 25% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
SDWIS compliance record for Castlewood Subdivision
111 violations on record for TX1010111; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
111 violations · 1,053 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Castlewood Subdivision
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Texas compares on the same EPA violation measures. Texas systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.