Harris County, Texas
238 ZIP codes · Avg score 84/100 · Grade B · Updated
ZipCheckup grade for Harris County: B.
This ZIP looks solid, with a few items worth a quick check.
The 238 water systems serving Harris County show strong compliance with federal drinking water standards.
How Harris County Compares
How Harris County Compares
Harris County scores 1 points above the Texas state average (83/100) and 11 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Harris County, Texas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12 (asthma 9.2%, diabetes 13.2%)
Estimated additional annual cost per homeowner: $2,671, driven primarily by flood
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Harris County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 118 violations. Past 5 years: 156 total (156 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $2,671
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Harris County
Remediation costs are relatively manageable for most homeowners in Harris County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Harris County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Harris County
8 community water systems serving Harris County.
- B
- B
- B
- B
- A
- B
Show all 8 water systems
- C
- A
247 total water systems serve Harris County.
Systems with the most violations in Harris County
5 water systems with recorded EPA violations.
- B
- B
- A
- B
- B
All ZIP Codes in Harris County
238 ZIP codes tracked in Harris County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 77002 | Houston | 91 | A | 1 (1 health) | $286K |
| 2 | 77003 | Houston | 91 | A | 1 (1 health) | $363K |
| 3 | 77004 | Houston | 91 | A | 1 (1 health) | $384K |
| 4 | 77006 | Houston | 91 | A | 1 (1 health) | $600K |
| 5 | 77007 | Houston | 91 | A | 1 (1 health) | $501K |
| 6 | 77008 | Houston | 91 | A | 1 (1 health) | $609K |
| 7 | 77009 | Houston | 91 | A | 1 (1 health) | $404K |
| 8 | 77010 | Houston | 91 | A | 1 (1 health) | — |
| 9 | 77011 | Houston | 91 | A | 1 (1 health) | $187K |
| 10 | 77012 | Houston | 91 | A | 1 (1 health) | $127K |
| 11 | 77013 | Houston | 91 | A | 1 (1 health) | $163K |
| 12 | 77016 | Houston | 91 | A | 1 (1 health) | $112K |
| 13 | 77018 | Houston | 91 | A | 1 (1 health) | $544K |
| 14 | 77020 | Houston | 91 | A | 1 (1 health) | $134K |
| 15 | 77021 | Houston | 91 | A | 1 (1 health) | $204K |
| 16 | 77022 | Houston | 91 | A | 1 (1 health) | $197K |
| 17 | 77023 | Houston | 91 | A | 1 (1 health) | $279K |
| 18 | 77026 | Houston | 91 | A | 1 (1 health) | $105K |
| 19 | 77027 | Houston | 91 | A | 1 (1 health) | $882K |
| 20 | 77028 | Houston | 91 | A | 1 (1 health) | $108K |
| 21 | 77031 | Houston | 91 | A | 3 (1 health) | $227K |
| 22 | 77033 | Houston | 91 | A | 1 (1 health) | $98K |
| 23 | 77036 | Houston | 91 | A | 1 (1 health) | $217K |
| 24 | 77042 | Houston | 91 | A | 1 (1 health) | $371K |
| 25 | 77045 | Houston | 91 | A | 1 (1 health) | $164K |
| 26 | 77046 | Houston | 91 | A | 1 (1 health) | $276K |
| 27 | 77048 | Houston | 91 | A | 1 (1 health) | $191K |
| 28 | 77050 | Houston | 91 | A | 1 (1 health) | $120K |
| 29 | 77051 | Houston | 91 | A | 1 (1 health) | $172K |
| 30 | 77054 | Houston | 91 | A | 1 (1 health) | $173K |
| 31 | 77055 | Houston | 91 | A | 1 (1 health) | $578K |
| 32 | 77056 | Houston | 91 | A | 1 (1 health) | $807K |
| 33 | 77061 | Houston | 91 | A | 1 (1 health) | $215K |
| 34 | 77063 | Houston | 91 | A | 1 (1 health) | $281K |
| 35 | 77072 | Houston | 91 | A | 1 (1 health) | $175K |
| 36 | 77074 | Houston | 91 | A | 1 (1 health) | $202K |
| 37 | 77077 | Houston | 91 | A | 1 (1 health) | $356K |
| 38 | 77078 | Houston | 91 | A | 1 (1 health) | $152K |
| 39 | 77079 | Houston | 91 | A | 1 (1 health) | $636K |
| 40 | 77080 | Houston | 91 | A | 1 (1 health) | $312K |
| 41 | 77081 | Houston | 91 | A | 1 (1 health) | $245K |
| 42 | 77082 | Houston | 91 | A | 2 (1 health) | $226K |
| 43 | 77085 | Houston | 91 | A | 1 (1 health) | $174K |
| 44 | 77087 | Houston | 91 | A | 1 (1 health) | $148K |
| 45 | 77091 | Houston | 91 | A | 1 (1 health) | $224K |
| 46 | 77092 | Houston | 91 | A | 1 (1 health) | $223K |
| 47 | 77094 | Houston | 91 | A | 1 (1 health) | $469K |
| 48 | 77096 | Houston | 91 | A | 1 (1 health) | $410K |
| 49 | 77098 | Houston | 91 | A | 1 (1 health) | $778K |
| 50 | 77099 | Houston | 91 | A | 2 (1 health) | $177K |
| 51 | 77336 | Huffman | 91 | A | 2 (1 health) | $266K |
| 52 | 77024 | Houston | 90 | A | 2 (1 health) | $1164K |
| 53 | 77043 | Houston | 90 | A | 5 (1 health) | $383K |
| 54 | 77069 | Houston | 90 | A | 18 | $320K |
| 55 | 77073 | Houston | 90 | A | 28 (1 health) | $207K |
| 56 | 77075 | Houston | 90 | A | 4 (1 health) | $220K |
| 57 | 77345 | Kingwood | 90 | A | 2 (1 health) | $370K |
| 58 | 77401 | Bellaire | 90 | A | 3 | $978K |
| 59 | 77017 | Houston | 89 | A | 4 (1 health) | $147K |
| 60 | 77032 | Houston | 89 | A | 6 (1 health) | $123K |
| 61 | 77034 | Houston | 89 | A | 4 (1 health) | $178K |
| 62 | 77035 | Houston | 89 | A | 4 (1 health) | $260K |
| 63 | 77014 | Houston | 88 | A | 21 (1 health) | $213K |
| 64 | 77076 | Houston | 88 | A | 8 (1 health) | $148K |
| 65 | 77093 | Houston | 88 | A | 11 (1 health) | $122K |
| 66 | 77571 | La Porte | 88 | A | 7 | $220K |
| 67 | 77030 | Houston | 87 | A | 10 (5 health) | $614K |
| 68 | 77068 | Houston | 87 | A | 11 | $312K |
| 69 | 77493 | Katy | 87 | A | 14 | $322K |
| 70 | 77530 | Channelview | 87 | A | 9 | $171K |
| 71 | 77857 | Gause | 87 | A | 5 (1 health) | $311K |
| 72 | 77067 | Houston | 86 | A | 10 (2 health) | $175K |
| 73 | 77338 | Humble | 86 | A | 9 (3 health) | $223K |
| 74 | 77339 | Kingwood | 86 | A | 7 (2 health) | $275K |
| 75 | 77346 | Humble | 86 | A | 19 (8 health) | $291K |
| 76 | 77039 | Houston | 85 | A | 18 (2 health) | $149K |
| 77 | 77071 | Houston | 85 | A | 12 (4 health) | $228K |
| 78 | 77088 | Houston | 85 | A | 14 (3 health) | $174K |
| 79 | 77373 | Spring | 85 | A | 20 | $221K |
| 80 | 77029 | Houston | 84 | B | 9 (2 health) | $115K |
| 81 | 77066 | Houston | 84 | B | 22 (1 health) | $218K |
| 82 | 77070 | Houston | 84 | B | 26 (1 health) | $264K |
| 83 | 77532 | Crosby | 84 | B | 15 (3 health) | $244K |
| 84 | 77037 | Houston | 83 | B | 17 (2 health) | $161K |
| 85 | 77040 | Houston | 83 | B | 14 (3 health) | $224K |
| 86 | 77433 | Cypress | 82 | B | 15 (2 health) | $384K |
| 87 | 77064 | Houston | 81 | B | 30 (3 health) | $235K |
| 88 | 77086 | Houston | 80 | B | 14 (2 health) | $196K |
| 89 | 77396 | Humble | 80 | B | 27 (7 health) | $234K |
| 90 | 77377 | Tomball | 79 | B | 21 (4 health) | $352K |
| 91 | 77038 | Houston | 77 | B | 18 (1 health) | $174K |
| 92 | 77044 | Houston | 76 | B | 41 (2 health) | $275K |
| 93 | 77041 | Houston | 75 | B | 38 (4 health) | $269K |
| 94 | 77049 | Houston | 75 | B | 122 (2 health) | $208K |
| 95 | 77053 | Houston | 75 | B | 75 (2 health) | $166K |
| 96 | 77060 | Houston | 75 | B | 240 (6 health) | $145K |
| 97 | 77065 | Houston | 75 | B | 41 (3 health) | $258K |
| 98 | 77083 | Houston | 75 | B | 50 (3 health) | $223K |
| 99 | 77090 | Houston | 75 | B | 374 (3 health) | $236K |
| 100 | 77375 | Tomball | 75 | B | 82 (6 health) | $287K |
| 101 | 77379 | Spring | 75 | B | 35 (10 health) | $336K |
| 102 | 77389 | Spring | 75 | B | 50 (3 health) | $387K |
| 103 | 77429 | Cypress | 75 | B | 37 (5 health) | $342K |
| 104 | 77057 | Houston | 74 | B | 1 (1 health) | $319K |
| 105 | 77058 | Houston | 74 | B | 2 (1 health) | $245K |
| 106 | 77587 | South Houston | 74 | B | 2 (1 health) | $177K |
| 107 | 77598 | Webster | 74 | B | 1 (1 health) | $229K |
| 108 | 77047 | Houston | 73 | B | 4 (1 health) | $224K |
| 109 | 77059 | Houston | 73 | B | 3 (1 health) | $396K |
| 110 | 77062 | Houston | 73 | B | 3 (1 health) | $280K |
| 111 | 77089 | Houston | 73 | B | 18 (1 health) | $237K |
| 112 | 77503 | Pasadena | 73 | B | 3 | $165K |
| 113 | 77506 | Pasadena | 73 | B | 3 | $132K |
| 114 | 77536 | Deer Park | 73 | B | 3 | $238K |
| 115 | 77025 | Houston | 72 | B | 6 (1 health) | $521K |
| 116 | 77502 | Pasadena | 72 | B | 5 (1 health) | $165K |
| 117 | 77504 | Pasadena | 72 | B | 4 (1 health) | $208K |
| 118 | 77505 | Pasadena | 72 | B | 5 (1 health) | $276K |
| 119 | 77520 | Baytown | 72 | B | 9 | $144K |
| 120 | 77586 | Seabrook | 71 | B | 6 | $326K |
| 121 | 77388 | Spring | 70 | B | 11 (1 health) | $265K |
| 122 | 77084 | Houston | 69 | C | 13 (2 health) | $233K |
| 123 | 77547 | Galena Park | 68 | C | 7 (1 health) | $109K |
| 124 | 77005 | Houston | 67 | C | 15 (5 health) | $1354K |
| 125 | 77095 | Houston | 67 | C | 15 (2 health) | $289K |
| 126 | 77015 | Houston | 62 | C | 18 (2 health) | $165K |
| 127 | 77562 | Highlands | 61 | C | 21 (4 health) | $195K |
| 128 | 77521 | Baytown | 58 | C | 44 (10 health) | $220K |
| 129 | 77001 | Houston | — | — | — | |
| 130 | 77052 | Houston | — | — | — | |
| 131 | 77097 | Houston | — | — | — | |
| 132 | 77201 | Houston | — | — | — | |
| 133 | 77202 | Houston | — | — | — | |
| 134 | 77203 | Houston | — | — | — | |
| 135 | 77204 | Houston | — | — | 1 (1 health) | — |
| 136 | 77205 | Houston | — | — | — | |
| 137 | 77206 | Houston | — | — | — | |
| 138 | 77207 | Houston | — | — | — | |
| 139 | 77208 | Houston | — | — | — | |
| 140 | 77209 | Houston | — | — | — | |
| 141 | 77210 | Houston | — | — | — | |
| 142 | 77212 | Houston | — | — | — | |
| 143 | 77213 | Houston | — | — | — | |
| 144 | 77215 | Houston | — | — | — | |
| 145 | 77216 | Houston | — | — | — | |
| 146 | 77217 | Houston | — | — | — | |
| 147 | 77218 | Houston | — | — | — | |
| 148 | 77219 | Houston | — | — | — | |
| 149 | 77220 | Houston | — | — | — | |
| 150 | 77221 | Houston | — | — | — | |
| 151 | 77222 | Houston | — | — | — | |
| 152 | 77223 | Houston | — | — | — | |
| 153 | 77224 | Houston | — | — | — | |
| 154 | 77225 | Houston | — | — | — | |
| 155 | 77226 | Houston | — | — | — | |
| 156 | 77227 | Houston | — | — | — | |
| 157 | 77228 | Houston | — | — | — | |
| 158 | 77229 | Houston | — | — | — | |
| 159 | 77230 | Houston | — | — | — | |
| 160 | 77231 | Houston | — | — | — | |
| 161 | 77233 | Houston | — | — | — | |
| 162 | 77234 | Houston | — | — | — | |
| 163 | 77235 | Houston | — | — | — | |
| 164 | 77236 | Houston | — | — | — | |
| 165 | 77237 | Houston | — | — | — | |
| 166 | 77238 | Houston | — | — | — | |
| 167 | 77240 | Houston | — | — | — | |
| 168 | 77241 | Houston | — | — | — | |
| 169 | 77242 | Houston | — | — | — | |
| 170 | 77243 | Houston | — | — | — | |
| 171 | 77244 | Houston | — | — | — | |
| 172 | 77245 | Houston | — | — | — | |
| 173 | 77246 | Houston | — | — | — | |
| 174 | 77247 | Houston | — | — | — | |
| 175 | 77248 | Houston | — | — | — | |
| 176 | 77249 | Houston | — | — | — | |
| 177 | 77250 | Houston | — | — | — | |
| 178 | 77251 | Houston | — | — | — | |
| 179 | 77252 | Houston | — | — | — | |
| 180 | 77253 | Houston | — | — | — | |
| 181 | 77254 | Houston | — | — | — | |
| 182 | 77255 | Houston | — | — | — | |
| 183 | 77256 | Houston | — | — | — | |
| 184 | 77257 | Houston | — | — | — | |
| 185 | 77258 | Houston | — | — | — | |
| 186 | 77259 | Houston | — | — | — | |
| 187 | 77260 | Houston | — | — | — | |
| 188 | 77261 | Houston | — | — | — | |
| 189 | 77262 | Houston | — | — | — | |
| 190 | 77263 | Houston | — | — | — | |
| 191 | 77265 | Houston | — | — | — | |
| 192 | 77266 | Houston | — | — | — | |
| 193 | 77268 | Houston | — | — | — | |
| 194 | 77269 | Houston | — | — | — | |
| 195 | 77270 | Houston | — | — | — | |
| 196 | 77271 | Houston | — | — | — | |
| 197 | 77272 | Houston | — | — | — | |
| 198 | 77273 | Houston | — | — | — | |
| 199 | 77274 | Houston | — | — | — | |
| 200 | 77275 | Houston | — | — | — | |
| 201 | 77276 | Houston | — | — | — | |
| 202 | 77277 | Houston | — | — | — | |
| 203 | 77278 | Houston | — | — | — | |
| 204 | 77279 | Houston | — | — | — | |
| 205 | 77280 | Houston | — | — | — | |
| 206 | 77282 | Houston | — | — | — | |
| 207 | 77284 | Houston | — | — | — | |
| 208 | 77285 | Houston | — | — | — | |
| 209 | 77286 | Houston | — | — | — | |
| 210 | 77287 | Houston | — | — | — | |
| 211 | 77288 | Houston | — | — | — | |
| 212 | 77289 | Houston | — | — | — | |
| 213 | 77290 | Houston | — | — | — | |
| 214 | 77291 | Houston | — | — | — | |
| 215 | 77292 | Houston | — | — | — | |
| 216 | 77293 | Houston | — | — | — | |
| 217 | 77294 | Houston | — | — | — | |
| 218 | 77296 | Houston | — | — | — | |
| 219 | 77297 | Houston | — | — | — | |
| 220 | 77298 | Houston | — | — | — | |
| 221 | 77299 | Houston | — | — | — | |
| 222 | 77315 | North Houston | — | — | — | |
| 223 | 77325 | Kingwood | — | — | — | |
| 224 | 77337 | Hufsmith | — | — | — | |
| 225 | 77347 | Humble | — | — | — | |
| 226 | 77383 | Spring | — | — | — | |
| 227 | 77391 | Spring | — | — | — | |
| 228 | 77402 | Bellaire | — | — | — | |
| 229 | 77410 | Cypress | — | — | — | |
| 230 | 77411 | Alief | — | — | — | |
| 231 | 77413 | Barker | — | — | — | |
| 232 | 77487 | Sugar Land | — | — | — | |
| 233 | 77492 | Katy | — | — | — | |
| 234 | 77501 | Pasadena | — | — | — | |
| 235 | 77507 | Pasadena | — | — | 5 | — |
| 236 | 77508 | Pasadena | — | — | — | |
| 237 | 77522 | Baytown | — | — | — | |
| 238 | 77572 | La Porte | — | — | — |
Recommended Buyer Guides for Harris County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.
- Best Water Filters for PFAS — PFAS detected in 8 ZIP codes
- Best Water Filters for Lead — Lead above EPA action level in 2 ZIP codes
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Harris County, Texas
Overview
Harris County in Texas covers 238 tracked ZIP records with an average Home Safety Score of B (84/100) across 128 scored records.
130 of 130 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 75 health-based violations appear in the available health breakdown.
← Back to Texas Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.