Harris County Municipal Utility District 165
EPA ID: TX1012187 · 30,483 people served · 193 ZIP codes
Within the EPA compliance database, Harris County Municipal Utility District 165 shows 11 violations still pending resolution — a status that applies across the full service territory of approximately 30,483 people and reflects findings that have not yet cleared the federal enforcement process or received formal closure.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 1 (2021) to 194 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Harris County Municipal Utility District 165 Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Harris County Municipal Utility District 165 serves a community with a median household income of $63,739 and an estimated 3,403,811 residents across its service area. Approximately 54% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 51% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Harris County Municipal Utility District 165's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Harris County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How Harris County Municipal Utility District 165 compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 10 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Lead and Copper Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 433 detections recorded. 13 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Texas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Harris County Municipal Utility District 165 (EPA ID: TX1012187) is a community water system in Texas that serves approximately 30,483 people from surface water sources.
This system provides water to 193 ZIP codes across 4 communities.
Average Home Safety Score: C (66/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| May 1, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| April 29, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| April 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| December 30, 2024 | Stage 1 DBP Rule | Monitoring | Unresolved |
| November 21, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 15, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| January 1, 2024 | Stage 1 DBP Rule | Monitoring | Unresolved |
| January 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| December 26, 2023 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| October 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 10 | Yes |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 3 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 190 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 193 ZIP codes:
77001 · 77002 · 77003 · 77004 · 77005 77006 · 77007 · 77008 · 77009 · 77010 77011 · 77012 · 77013 · 77014 · 77015 77016 · 77017 · 77018 · 77019 · 77020 77021 · 77022 · 77023 · 77024 · 77025 77026 · 77027 · 77028 · 77029 · 77030 77031 · 77032 · 77033 · 77034 · 77035 77036 · 77037 · 77038 · 77039 · 77040 77041 · 77042 · 77043 · 77044 · 77045 77046 · 77047 · 77048 · 77049 · 77050 77051 · 77052 · 77053 · 77054 · 77055 77056 · 77057 · 77058 · 77059 · 77060 77061 · 77062 · 77063 · 77064 · 77065 77066 · 77067 · 77068 · 77069 · 77070 77071 · 77072 · 77073 · 77074 · 77075 77076 · 77077 · 77078 · 77079 · 77080 77081 · 77082 · 77083 · 77084 · 77085 77086 · 77087 · 77088 · 77089 · 77090 77091 · 77092 · 77093 · 77094 · 77095 77096 · 77097 · 77098 · 77099 · 77201 77202 · 77203 · 77204 · 77205 · 77206 77207 · 77208 · 77209 · 77210 · 77212 77213 · 77215 · 77216 · 77217 · 77218 77219 · 77220 · 77221 · 77222 · 77223 77224 · 77225 · 77226 · 77227 · 77228 77229 · 77230 · 77231 · 77233 · 77234 77235 · 77236 · 77237 · 77238 · 77240 77241 · 77242 · 77243 · 77244 · 77245 77246 · 77247 · 77248 · 77249 · 77250 77251 · 77252 · 77253 · 77254 · 77255 77256 · 77257 · 77258 · 77259 · 77260 77261 · 77262 · 77263 · 77265 · 77266 77267 · 77268 · 77269 · 77270 · 77271 77272 · 77273 · 77274 · 77275 · 77276 77277 · 77278 · 77279 · 77280 · 77282 77284 · 77285 · 77286 · 77287 · 77288 77289 · 77290 · 77291 · 77292 · 77293 77294 · 77296 · 77297 · 77298 · 77299 77433 · 77447 · 77493
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Harris County Municipal Utility District 165 (TX1012187) on EPA.gov.
Frequently Asked Questions
Is Harris County Municipal Utility District 165 water safe to drink?
Harris County Municipal Utility District 165 has recorded 9 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Harris County Municipal Utility District 165 serve?
Harris County Municipal Utility District 165 serves approximately 30,483 people across 193 ZIP codes in Texas.
Where does Harris County Municipal Utility District 165 get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Harris County Municipal Utility District 165 (EPA ID: TX1012187) — request the latest Consumer Confidence Report or ask about specific contaminants.