COUNTY REPORT
CA
Los Angeles County, California
459 ZIP codes · Avg score 72/100 · Grade B · Updated 2026-06-04
Across Los Angeles County's 459 ZIP codes, EPA compliance data shows above-average performance — violation rates are minimal, none of the county's systems have triggered health-based MCL exceedances in recent cycles, and the county's scores have stayed above the national baseline across every recent reporting period.
How Los Angeles County Compares
Los Angeles County72/100
California avg73/100
National avg68/100
How Los Angeles County Compares
B
County Grade
72/100
Avg Safety Score
459
ZIP Codes
169
Water Systems
Los Angeles County scores 1 points below the California state average (73/100) and 4 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
B
County Grade
72
Avg Safety Score
459
ZIP Codes
Best ZIP: 90220 (83/100)
Lowest ZIP: 91426 (17/100)
$787K
Median Home Value
$1,355
Avg Remediation (17% of home value)
ZIP Code Risk Map
Water Quality Map: Los Angeles County, California
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
A
B
C
D
F
Key Risk Factors
Health risk index: 10.7 (asthma 9.1%, diabetes 12.6%)
Estimated additional annual cost per homeowner: $3,573, driven primarily by wildfire
Infrastructure: 0.367% avg pipe failure probability, 36% of ZIPs at high risk
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Los Angeles County water systems. Health-based shown in red, total in blue.
2021
34 (34 health)
2022
163 (157 health)
2023
183 (183 health)
2024
328 (328 health)
2025
89 (89 health)
Peak year: 2024 with 328 violations. Past 5 years: 797 total (791 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
Asthma
9.1% (national: 8.9%)
Diabetes
12.6% (national: 10.5%)
Obesity
26.5% (national: 32.4%)
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
37%
Pipe Failure Probability
36%
ZIPs at High Infra Risk
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $3,573
Wildfire
$2,397/yr
Flood
$376/yr
Energy Code Gap
$282/yr
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 Los Angeles County
$787K
Median Home Value
$1,355
Est. Remediation Cost
0.2%
of Home Value
Remediation as % of home value
low burden
Remediation costs are relatively manageable for most homeowners in Los Angeles 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 Los Angeles County residents
Asthma
9.1%
(US avg: 8.9%)
Diabetes
12.6%
(US avg: 11%)
Obesity
26.5%
(US avg: 32.4%)
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Los Angeles County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Long Beach Utilities Department | 466,772 | 520 |
| 2 | Robinson's Corner Mhp | 20 | 513 |
| 3 | Los Angeles-city, Department of Water & Power | 3,875,566 | 245 |
| 4 | Monterey Park-city, Water Department | 62,183 | 202 |
| 5 | Santa Monica-city, Water Division | 89,947 | 190 |
169 total water systems serve Los Angeles County.
Environmental Justice Indicator
Los Angeles County scores in the 74th percentile on the EPA EJScreen composite index, indicating elevated environmental burden relative to the national average. Approximately 49% of residents live in areas classified as disadvantaged communities. EJScreen measures cumulative environmental and demographic factors including air quality, proximity to hazardous sites, and socioeconomic vulnerability. Learn more at EPA.gov
All ZIP Codes in Los Angeles County
459 ZIP codes tracked in Los Angeles County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 90220 | Compton | 83 | B | 0 | $515K |
| 2 | 90221 | Compton | 83 | B | 0 | $542K |
| 3 | 90222 | Compton | 83 | B | 0 | $552K |
| 4 | 90223 | Compton | 83 | B | 0 | — |
| 5 | 90224 | Compton | 83 | B | 0 | — |
| 6 | 90239 | Downey | 83 | B | 1 | — |
| 7 | 90241 | Downey | 83 | B | 1 | $770K |
| 8 | 90242 | Downey | 83 | B | 1 | $676K |
| 9 | 90250 | Hawthorne | 83 | B | 1 | $828K |
| 10 | 90251 | Hawthorne | 83 | B | 1 | — |
| 11 | 90267 | Manhattan Beach | 83 | B | 0 | — |
| 12 | 90280 | South Gate | 83 | B | 0 | $609K |
| 13 | 90301 | Inglewood | 83 | B | 1 | $698K |
| 14 | 90302 | Inglewood | 83 | B | 1 | $731K |
| 15 | 90304 | Inglewood | 83 | B | 1 | $696K |
| 16 | 90305 | Inglewood | 83 | B | 1 | $785K |
| 17 | 90306 | Inglewood | 83 | B | 1 | — |
| 18 | 90307 | Inglewood | 83 | B | 1 | — |
| 19 | 90308 | Inglewood | 83 | B | 1 | — |
| 20 | 90309 | Inglewood | 83 | B | 1 | — |
| 21 | 90310 | Inglewood | 83 | B | 1 | — |
| 22 | 90311 | Inglewood | 83 | B | 1 | — |
| 23 | 90312 | Inglewood | 83 | B | 1 | — |
| 24 | 90397 | Inglewood | 83 | B | 1 | — |
| 25 | 90398 | Inglewood | 83 | B | 1 | — |
| 26 | 90401 | Santa Monica | 83 | B | 0 | $1130K |
| 27 | 90404 | Santa Monica | 83 | B | 0 | $1160K |
| 28 | 90406 | Santa Monica | 83 | B | 0 | — |
| 29 | 90407 | Santa Monica | 83 | B | 0 | — |
| 30 | 90408 | Santa Monica | 83 | B | 0 | — |
| 31 | 90409 | Santa Monica | 83 | B | 0 | — |
| 32 | 90410 | Santa Monica | 83 | B | 0 | — |
| 33 | 90411 | Santa Monica | 83 | B | 0 | — |
| 34 | 90601 | Whittier | 83 | B | 0 | $729K |
| 35 | 90602 | Whittier | 83 | B | 0 | $729K |
| 36 | 90603 | Whittier | 83 | B | 0 | $781K |
| 37 | 90604 | Whittier | 83 | B | 0 | $684K |
| 38 | 90605 | Whittier | 83 | B | 0 | $662K |
| 39 | 90606 | Whittier | 83 | B | 0 | $624K |
| 40 | 90607 | Whittier | 83 | B | 0 | — |
| 41 | 90608 | Whittier | 83 | B | 0 | — |
| 42 | 90609 | Whittier | 83 | B | 0 | — |
| 43 | 90610 | Whittier | 83 | B | 0 | — |
| 44 | 90612 | Whittier | 83 | B | 0 | — |
| 45 | 90704 | Avalon | 83 | B | 0 | $903K |
| 46 | 90707 | Bellflower | 83 | B | 0 | — |
| 47 | 91031 | South Pasadena | 83 | B | 0 | — |
| 48 | 91201 | Glendale | 83 | B | 0 | $1061K |
| 49 | 91202 | Glendale | 83 | B | 0 | $1095K |
| 50 | 91203 | Glendale | 83 | B | 0 | $661K |
| 51 | 91204 | Glendale | 83 | B | 0 | $747K |
| 52 | 91205 | Glendale | 83 | B | 0 | $763K |
| 53 | 91207 | Glendale | 83 | B | 0 | $1246K |
| 54 | 91209 | Glendale | 83 | B | 0 | — |
| 55 | 91210 | Glendale | 83 | B | 0 | $903K |
| 56 | 91221 | Glendale | 83 | B | 0 | — |
| 57 | 91222 | Glendale | 83 | B | 0 | — |
| 58 | 91224 | La Crescenta | 83 | B | 0 | — |
| 59 | 91225 | Glendale | 83 | B | 0 | — |
| 60 | 91226 | Glendale | 83 | B | 0 | — |
| 61 | 91310 | Castaic | 83 | B | 0 | — |
| 62 | 91322 | Newhall | 83 | B | 0 | — |
| 63 | 91340 | San Fernando | 83 | B | 0 | $625K |
| 64 | 91341 | San Fernando | 83 | B | 0 | — |
| 65 | 91363 | Thousand Oaks | 83 | B | 0 | — |
| 66 | 91372 | Calabasas | 83 | B | 0 | — |
| 67 | 91711 | Claremont | 83 | B | 0 | $870K |
| 68 | 91740 | Glendora | 83 | B | 1 | $702K |
| 69 | 91741 | Glendora | 83 | B | 1 | $924K |
| 70 | 91744 | La Puente | 83 | B | 0 | $586K |
| 71 | 91746 | La Puente | 83 | B | 0 | $603K |
| 72 | 91747 | La Puente | 83 | B | 0 | — |
| 73 | 91749 | La Puente | 83 | B | 0 | — |
| 74 | 91773 | San Dimas | 83 | B | 0 | $755K |
| 75 | 91788 | Walnut | 83 | B | 0 | — |
| 76 | 91789 | Walnut | 83 | B | 0 | $937K |
| 77 | 91795 | Walnut | 83 | B | 0 | — |
| 78 | 91801 | Alhambra | 83 | B | 0 | $797K |
| 79 | 91802 | Alhambra | 83 | B | 0 | — |
| 80 | 91803 | Alhambra | 83 | B | 0 | $832K |
| 81 | 91804 | Alhambra | 83 | B | 0 | — |
| 82 | 91841 | Alhambra | 83 | B | 0 | — |
| 83 | 91896 | Alhambra | 83 | B | 0 | — |
| 84 | 91899 | Alhambra | 83 | B | 0 | — |
| 85 | 93552 | Palmdale | 83 | B | 1 | $415K |
| 86 | 93590 | Palmdale | 83 | B | 1 | — |
| 87 | 93591 | Palmdale | 83 | B | 1 | $299K |
| 88 | 93599 | Palmdale | 83 | B | 1 | — |
| 89 | 90670 | Santa Fe Springs | 82 | B | 0 | $624K |
| 90 | 91043 | Tujunga | 82 | B | 3 (1 health) | — |
| 91 | 91359 | Westlake Village | 82 | B | 0 | — |
| 92 | 91502 | Burbank | 82 | B | 3 | $947K |
| 93 | 91503 | Burbank | 82 | B | 3 | — |
| 94 | 91505 | Burbank | 82 | B | 3 | $992K |
| 95 | 91506 | Burbank | 82 | B | 3 | $1056K |
| 96 | 91507 | Burbank | 82 | B | 3 | — |
| 97 | 91508 | Burbank | 82 | B | 3 | — |
| 98 | 91510 | Burbank | 82 | B | 3 | — |
| 99 | 91521 | Burbank | 82 | B | 3 | — |
| 100 | 91522 | Burbank | 82 | B | 3 | — |
| 101 | 91523 | Burbank | 82 | B | 3 | — |
| 102 | 91526 | Burbank | 82 | B | 3 | — |
| 103 | 91706 | Baldwin Park | 82 | B | 2 | $590K |
| 104 | 90209 | Beverly Hills | 81 | B | 1 | — |
| 105 | 90213 | Beverly Hills | 81 | B | 1 | — |
| 106 | 90671 | Santa Fe Springs | 81 | B | 0 | — |
| 107 | 91012 | La Canada Flintridge | 81 | B | 1 | — |
| 108 | 91101 | Pasadena | 81 | B | 5 | $687K |
| 109 | 91102 | Pasadena | 81 | B | 5 | — |
| 110 | 91104 | Pasadena | 81 | B | 5 | $1023K |
| 111 | 91106 | Pasadena | 81 | B | 5 | $967K |
| 112 | 91110 | Pasadena | 81 | B | 5 | — |
| 113 | 91114 | Pasadena | 81 | B | 5 | — |
| 114 | 91115 | Pasadena | 81 | B | 5 | — |
| 115 | 91116 | Pasadena | 81 | B | 5 | — |
| 116 | 91117 | Pasadena | 81 | B | 5 | — |
| 117 | 91121 | Pasadena | 81 | B | 5 | — |
| 118 | 91123 | Pasadena | 81 | B | 5 | — |
| 119 | 91124 | Pasadena | 81 | B | 5 | — |
| 120 | 91125 | Pasadena | 81 | B | 5 | — |
| 121 | 91126 | Pasadena | 81 | B | 5 | — |
| 122 | 91129 | Pasadena | 81 | B | 5 | — |
| 123 | 91182 | Pasadena | 81 | B | 5 | — |
| 124 | 91184 | Pasadena | 81 | B | 5 | — |
| 125 | 91185 | Pasadena | 81 | B | 5 | — |
| 126 | 91188 | Pasadena | 81 | B | 5 | — |
| 127 | 91189 | Pasadena | 81 | B | 5 | — |
| 128 | 91191 | Pasadena | 81 | B | 5 | — |
| 129 | 91199 | Pasadena | 81 | B | 5 | — |
| 130 | 91770 | Rosemead | 81 | B | 2 | $713K |
| 131 | 91771 | Rosemead | 81 | B | 2 | — |
| 132 | 91772 | Rosemead | 81 | B | 2 | — |
| 133 | 90640 | Montebello | 80 | B | 6 | $661K |
| 134 | 90003 | Los Angeles | 79 | B | 2 (1 health) | $548K |
| 135 | 90006 | Los Angeles | 79 | B | 2 (1 health) | $842K |
| 136 | 90007 | Los Angeles | 79 | B | 2 (1 health) | $853K |
| 137 | 90010 | Los Angeles | 79 | B | 2 (1 health) | $864K |
| 138 | 90013 | Los Angeles | 79 | B | 2 (1 health) | $787K |
| 139 | 90015 | Los Angeles | 79 | B | 2 (1 health) | $1001K |
| 140 | 90017 | Los Angeles | 79 | B | 2 (1 health) | $676K |
| 141 | 90018 | Los Angeles | 79 | B | 2 (1 health) | $887K |
| 142 | 90020 | Los Angeles | 79 | B | 2 (1 health) | $827K |
| 143 | 90022 | Los Angeles | 79 | B | 2 (1 health) | $604K |
| 144 | 90026 | Los Angeles | 79 | B | 2 (1 health) | $1143K |
| 145 | 90028 | Los Angeles | 79 | B | 2 (1 health) | $971K |
| 146 | 90030 | Los Angeles | 79 | B | 2 (1 health) | — |
| 147 | 90031 | Los Angeles | 79 | B | 2 (1 health) | $759K |
| 148 | 90032 | Los Angeles | 79 | B | 2 (1 health) | $780K |
| 149 | 90033 | Los Angeles | 79 | B | 2 (1 health) | $670K |
| 150 | 90038 | Los Angeles | 79 | B | 2 (1 health) | $1089K |
| 151 | 90040 | Los Angeles | 79 | B | 2 (1 health) | $577K |
| 152 | 90044 | Los Angeles | 79 | B | 2 (1 health) | $588K |
| 153 | 90045 | Los Angeles | 79 | B | 2 (1 health) | $1323K |
| 154 | 90051 | Los Angeles | 79 | B | 2 (1 health) | — |
| 155 | 90054 | Los Angeles | 79 | B | 2 (1 health) | — |
| 156 | 90056 | Los Angeles | 79 | B | 2 (1 health) | $1510K |
| 157 | 90059 | Los Angeles | 79 | B | 2 (1 health) | $566K |
| 158 | 90061 | Los Angeles | 79 | B | 2 (1 health) | $576K |
| 159 | 90062 | Los Angeles | 79 | B | 2 (1 health) | $673K |
| 160 | 90063 | Los Angeles | 79 | B | 2 (1 health) | $619K |
| 161 | 90071 | Los Angeles | 79 | B | 2 (1 health) | — |
| 162 | 90078 | Los Angeles | 79 | B | 2 (1 health) | — |
| 163 | 90084 | Los Angeles | 79 | B | 2 (1 health) | — |
| 164 | 90661 | Pico Rivera | 79 | B | 5 | — |
| 165 | 90662 | Pico Rivera | 79 | B | 5 | — |
| 166 | 91007 | Arcadia | 79 | B | 2 (1 health) | $1231K |
| 167 | 91702 | Azusa | 79 | B | 3 (1 health) | $605K |
| 168 | 91731 | El Monte | 79 | B | 5 | $614K |
| 169 | 91732 | El Monte | 79 | B | 5 | $628K |
| 170 | 91734 | El Monte | 79 | B | 5 | — |
| 171 | 91735 | El Monte | 79 | B | 5 | — |
| 172 | 91755 | Monterey Park | 79 | B | 2 (1 health) | $762K |
| 173 | 91756 | Monterey Park | 79 | B | 2 (1 health) | — |
| 174 | 90001 | Los Angeles | 78 | B | 2 (1 health) | $513K |
| 175 | 90002 | Los Angeles | 78 | B | 2 (1 health) | $503K |
| 176 | 90009 | Los Angeles | 78 | B | 2 (1 health) | — |
| 177 | 90011 | Los Angeles | 78 | B | 2 (1 health) | $575K |
| 178 | 90012 | Los Angeles | 78 | B | 2 (1 health) | $686K |
| 179 | 90021 | Los Angeles | 78 | B | 2 (1 health) | $1076K |
| 180 | 90023 | Los Angeles | 78 | B | 2 (1 health) | $618K |
| 181 | 90037 | Los Angeles | 78 | B | 2 (1 health) | $633K |
| 182 | 90050 | Los Angeles | 78 | B | 2 (1 health) | — |
| 183 | 90052 | Los Angeles | 78 | B | 2 (1 health) | — |
| 184 | 90053 | Los Angeles | 78 | B | 2 (1 health) | — |
| 185 | 90055 | Los Angeles | 78 | B | 2 (1 health) | — |
| 186 | 90057 | Los Angeles | 78 | B | 2 (1 health) | $695K |
| 187 | 90058 | Los Angeles | 78 | B | 2 (1 health) | $457K |
| 188 | 90060 | Los Angeles | 78 | B | 2 (1 health) | — |
| 189 | 90070 | Los Angeles | 78 | B | 2 (1 health) | — |
| 190 | 90072 | Los Angeles | 78 | B | 2 (1 health) | — |
| 191 | 90073 | Los Angeles | 78 | B | 2 (1 health) | — |
| 192 | 90074 | Los Angeles | 78 | B | 2 (1 health) | — |
| 193 | 90075 | Los Angeles | 78 | B | 2 (1 health) | — |
| 194 | 90076 | Los Angeles | 78 | B | 2 (1 health) | — |
| 195 | 90079 | Los Angeles | 78 | B | 2 (1 health) | — |
| 196 | 90080 | Los Angeles | 78 | B | 2 (1 health) | — |
| 197 | 90081 | Los Angeles | 78 | B | 2 (1 health) | — |
| 198 | 90082 | Los Angeles | 78 | B | 2 (1 health) | — |
| 199 | 90083 | Los Angeles | 78 | B | 2 (1 health) | — |
| 200 | 90086 | Los Angeles | 78 | B | 2 (1 health) | — |
| 201 | 90087 | Los Angeles | 78 | B | 2 (1 health) | — |
| 202 | 90088 | Los Angeles | 78 | B | 2 (1 health) | — |
| 203 | 90089 | Los Angeles | 78 | B | 2 (1 health) | — |
| 204 | 90091 | Los Angeles | 78 | B | 2 (1 health) | — |
| 205 | 90093 | Los Angeles | 78 | B | 2 (1 health) | — |
| 206 | 90095 | Los Angeles | 78 | B | 2 (1 health) | — |
| 207 | 90096 | Los Angeles | 78 | B | 2 (1 health) | — |
| 208 | 90099 | Los Angeles | 78 | B | 2 (1 health) | — |
| 209 | 90101 | Los Angeles | 78 | B | 2 (1 health) | — |
| 210 | 90103 | Los Angeles | 78 | B | 2 (1 health) | — |
| 211 | 90189 | Los Angeles | 78 | B | 2 (1 health) | — |
| 212 | 90240 | Downey | 78 | B | 1 | $764K |
| 213 | 90266 | Manhattan Beach | 78 | B | 0 | $2000K |
| 214 | 90303 | Inglewood | 78 | B | 1 | $764K |
| 215 | 90402 | Santa Monica | 78 | B | 0 | $2000K |
| 216 | 90403 | Santa Monica | 78 | B | 0 | $1554K |
| 217 | 90405 | Santa Monica | 78 | B | 0 | $1941K |
| 218 | 90706 | Bellflower | 78 | B | 0 | $661K |
| 219 | 90755 | Signal Hill | 78 | B | 7 (5 health) | $730K |
| 220 | 91030 | South Pasadena | 78 | B | 0 | $1545K |
| 221 | 91066 | Arcadia | 78 | B | 2 (1 health) | — |
| 222 | 91077 | Arcadia | 78 | B | 2 (1 health) | — |
| 223 | 91206 | Glendale | 78 | B | 0 | $1094K |
| 224 | 91208 | Glendale | 78 | B | 0 | $1276K |
| 225 | 91214 | La Crescenta | 78 | B | 0 | $1088K |
| 226 | 91321 | Newhall | 78 | B | 0 | $654K |
| 227 | 91350 | Santa Clarita | 78 | B | 3 (2 health) | $733K |
| 228 | 91376 | Agoura Hills | 78 | B | 2 (1 health) | — |
| 229 | 91384 | Castaic | 78 | B | 0 | $694K |
| 230 | 91766 | Pomona | 78 | B | 4 (2 health) | $568K |
| 231 | 91768 | Pomona | 78 | B | 4 (2 health) | $537K |
| 232 | 93550 | Palmdale | 78 | B | 1 | $379K |
| 233 | 93551 | Palmdale | 78 | B | 1 | $549K |
| 234 | 93563 | Valyermo | 78 | B | 2 (1 health) | — |
| 235 | 91380 | Santa Clarita | 77 | B | 3 (2 health) | — |
| 236 | 91382 | Santa Clarita | 77 | B | 3 (2 health) | — |
| 237 | 91383 | Santa Clarita | 77 | B | 3 (2 health) | — |
| 238 | 91501 | Burbank | 77 | B | 3 | $1012K |
| 239 | 91504 | Burbank | 77 | B | 3 | $1046K |
| 240 | 91767 | Pomona | 77 | B | 4 (2 health) | $585K |
| 241 | 91769 | Pomona | 77 | B | 4 (2 health) | — |
| 242 | 91797 | Pomona | 77 | B | 4 (2 health) | — |
| 243 | 90211 | Beverly Hills | 76 | B | 1 | $2000K |
| 244 | 90212 | Beverly Hills | 76 | B | 1 | $2000K |
| 245 | 91103 | Pasadena | 76 | B | 5 | $960K |
| 246 | 91105 | Pasadena | 76 | B | 5 | $1616K |
| 247 | 91107 | Pasadena | 76 | B | 5 | $1107K |
| 248 | 91108 | San Marino | 76 | B | 0 | $2000K |
| 249 | 90201 | Bell Gardens | 75 | B | 0 | $543K |
| 250 | 90245 | El Segundo | 75 | B | 0 | $1522K |
| 251 | 90255 | Huntington Park | 75 | B | 1 | $563K |
| 252 | 90501 | Torrance | 75 | B | 0 | $887K |
| 253 | 90504 | Torrance | 75 | B | 0 | $897K |
| 254 | 90505 | Torrance | 75 | B | 0 | $1144K |
| 255 | 90650 | Norwalk | 75 | B | 0 | $617K |
| 256 | 90703 | Cerritos | 75 | B | 0 | $907K |
| 257 | 90712 | Lakewood | 75 | B | 0 | $780K |
| 258 | 90713 | Lakewood | 75 | B | 0 | $809K |
| 259 | 90715 | Lakewood | 75 | B | 0 | $661K |
| 260 | 90717 | Lomita | 75 | B | 0 | $794K |
| 261 | 90801 | Long Beach | 75 | B | 19 (2 health) | — |
| 262 | 90802 | Long Beach | 75 | B | 19 (2 health) | $547K |
| 263 | 91722 | Covina | 75 | B | 1 | $626K |
| 264 | 91724 | Covina | 75 | B | 1 | $723K |
| 265 | 91748 | Rowland Heights | 75 | B | 0 | $782K |
| 266 | 91791 | West Covina | 75 | B | 0 | $783K |
| 267 | 90004 | Los Angeles | 74 | B | 2 (1 health) | $1457K |
| 268 | 90005 | Los Angeles | 74 | B | 2 (1 health) | $1084K |
| 269 | 90008 | Los Angeles | 74 | B | 2 (1 health) | $1003K |
| 270 | 90014 | Los Angeles | 74 | B | 2 (1 health) | $645K |
| 271 | 90024 | Los Angeles | 74 | B | 2 (1 health) | $1434K |
| 272 | 90025 | Los Angeles | 74 | B | 2 (1 health) | $1081K |
| 273 | 90027 | Los Angeles | 74 | B | 2 (1 health) | $1747K |
| 274 | 90029 | Los Angeles | 74 | B | 2 (1 health) | $1066K |
| 275 | 90034 | Los Angeles | 74 | B | 2 (1 health) | $1395K |
| 276 | 90036 | Los Angeles | 74 | B | 2 (1 health) | $1959K |
| 277 | 90039 | Los Angeles | 74 | B | 2 (1 health) | $1202K |
| 278 | 90041 | Los Angeles | 74 | B | 2 (1 health) | $1135K |
| 279 | 90042 | Los Angeles | 74 | B | 2 (1 health) | $941K |
| 280 | 90043 | Los Angeles | 74 | B | 2 (1 health) | $868K |
| 281 | 90064 | Los Angeles | 74 | B | 2 (1 health) | $1747K |
| 282 | 90065 | Los Angeles | 74 | B | 2 (1 health) | $1044K |
| 283 | 90066 | Los Angeles | 74 | B | 2 (1 health) | $1637K |
| 284 | 90067 | Los Angeles | 74 | B | 2 (1 health) | $1586K |
| 285 | 90660 | Pico Rivera | 74 | B | 5 | $621K |
| 286 | 91006 | Arcadia | 74 | B | 2 (1 health) | $1188K |
| 287 | 91754 | Monterey Park | 74 | B | 2 (1 health) | $845K |
| 288 | 90809 | Long Beach | 73 | B | 19 (2 health) | — |
| 289 | 90822 | Long Beach | 73 | B | 19 (2 health) | — |
| 290 | 90831 | Long Beach | 73 | B | 19 (2 health) | — |
| 291 | 90832 | Long Beach | 73 | B | 19 (2 health) | — |
| 292 | 90833 | Long Beach | 73 | B | 19 (2 health) | — |
| 293 | 90834 | Long Beach | 73 | B | 19 (2 health) | — |
| 294 | 90835 | Long Beach | 73 | B | 19 (2 health) | — |
| 295 | 90840 | Long Beach | 73 | B | 19 (2 health) | — |
| 296 | 90842 | Long Beach | 73 | B | 19 (2 health) | — |
| 297 | 90844 | Long Beach | 73 | B | 19 (2 health) | — |
| 298 | 90846 | Long Beach | 73 | B | 19 (2 health) | — |
| 299 | 90847 | Long Beach | 73 | B | 19 (2 health) | — |
| 300 | 90848 | Long Beach | 73 | B | 19 (2 health) | — |
| 301 | 90853 | Long Beach | 73 | B | 19 (2 health) | — |
| 302 | 90899 | Long Beach | 73 | B | 19 (2 health) | — |
| 303 | 91118 | San Marino | 73 | B | 0 | — |
| 304 | 91302 | Calabasas | 73 | B | 0 | $1675K |
| 305 | 91390 | Santa Clarita | 73 | B | 3 (2 health) | $843K |
| 306 | 90270 | Maywood | 72 | B | 0 | $595K |
| 307 | 90502 | Torrance | 72 | B | 0 | $655K |
| 308 | 90503 | Torrance | 72 | B | 0 | $1058K |
| 309 | 90506 | Torrance | 72 | B | 0 | — |
| 310 | 90507 | Torrance | 72 | B | 0 | — |
| 311 | 90508 | Torrance | 72 | B | 0 | — |
| 312 | 90509 | Torrance | 72 | B | 0 | — |
| 313 | 90510 | Torrance | 72 | B | 0 | — |
| 314 | 90651 | Norwalk | 72 | B | 0 | — |
| 315 | 90652 | Norwalk | 72 | B | 0 | — |
| 316 | 90659 | Norwalk | 72 | B | 0 | — |
| 317 | 90711 | Lakewood | 72 | B | 0 | — |
| 318 | 90714 | Lakewood | 72 | B | 0 | — |
| 319 | 91003 | Altadena | 72 | B | 0 | — |
| 320 | 91025 | Sierra Madre | 72 | B | 0 | — |
| 321 | 91042 | Tujunga | 72 | B | 3 (1 health) | $802K |
| 322 | 91723 | Covina | 72 | B | 1 | $664K |
| 323 | 91792 | West Covina | 72 | B | 0 | $654K |
| 324 | 91793 | West Covina | 72 | B | 0 | — |
| 325 | 93543 | Littlerock | 72 | B | 3 | $354K |
| 326 | 91011 | La Canada Flintridge | 71 | B | 1 | $2000K |
| 327 | 90262 | Lynwood | 70 | B | 0 | $569K |
| 328 | 90723 | Paramount | 70 | B | 0 | $500K |
| 329 | 90804 | Long Beach | 70 | B | 19 (2 health) | $674K |
| 330 | 90806 | Long Beach | 70 | B | 19 (2 health) | $700K |
| 331 | 90807 | Long Beach | 70 | B | 19 (2 health) | $832K |
| 332 | 90808 | Long Beach | 70 | B | 19 (2 health) | $900K |
| 333 | 90810 | Long Beach | 70 | B | 19 (2 health) | $594K |
| 334 | 90813 | Long Beach | 70 | B | 19 (2 health) | $544K |
| 335 | 90814 | Long Beach | 70 | B | 19 (2 health) | $899K |
| 336 | 90815 | Long Beach | 70 | B | 19 (2 health) | $891K |
| 337 | 91001 | Altadena | 70 | B | 0 | $1085K |
| 338 | 91017 | Monrovia | 70 | B | 1 | — |
| 339 | 91024 | Sierra Madre | 70 | B | 0 | $1172K |
| 340 | 91790 | West Covina | 70 | B | 0 | $696K |
| 341 | 90016 | Los Angeles | 69 | C | 2 (1 health) | $920K |
| 342 | 90019 | Los Angeles | 69 | C | 2 (1 health) | $1178K |
| 343 | 90035 | Los Angeles | 69 | C | 2 (1 health) | $1844K |
| 344 | 90047 | Los Angeles | 69 | C | 2 (1 health) | $648K |
| 345 | 90048 | Los Angeles | 69 | C | 2 (1 health) | $1848K |
| 346 | 90068 | Los Angeles | 69 | C | 2 (1 health) | $1840K |
| 347 | 91750 | La Verne | 69 | C | 2 (1 health) | $789K |
| 348 | 91016 | Monrovia | 68 | C | 1 | $874K |
| 349 | 90210 | Beverly Hills | 66 | C | 1 | $2000K |
| 350 | 90803 | Long Beach | 65 | C | 19 (2 health) | $1138K |
| 351 | 90805 | Long Beach | 65 | C | 19 (2 health) | $589K |
| 352 | 90046 | Los Angeles | 64 | C | 2 (1 health) | $1412K |
| 353 | 90049 | Los Angeles | 64 | C | 2 (1 health) | $2000K |
| 354 | 90077 | Los Angeles | 64 | C | 2 (1 health) | $2000K |
| 355 | 91301 | Agoura Hills | 64 | C | 2 (1 health) | $1097K |
| 356 | 90247 | Gardena | 63 | C | 0 | $641K |
| 357 | 90249 | Gardena | 63 | C | 0 | $710K |
| 358 | 90254 | Hermosa Beach | 63 | C | 0 | $2000K |
| 359 | 90260 | Lawndale | 63 | C | 0 | $746K |
| 360 | 90275 | Rancho Palos Verdes | 63 | C | 5 (5 health) | $1543K |
| 361 | 90278 | Redondo Beach | 63 | C | 0 | $1196K |
| 362 | 90638 | La Mirada | 63 | C | 0 | $765K |
| 363 | 90701 | Artesia | 63 | C | 0 | $764K |
| 364 | 90716 | Hawaiian Gardens | 63 | C | 0 | $525K |
| 365 | 91008 | Duarte | 63 | C | 0 | $1704K |
| 366 | 91010 | Duarte | 63 | C | 0 | $692K |
| 367 | 91046 | Verdugo City | 63 | C | 0 | — |
| 368 | 91303 | Canoga Park | 63 | C | 0 | $645K |
| 369 | 91331 | Pacoima | 63 | C | 0 | $609K |
| 370 | 91343 | North Hills | 63 | C | 0 | $751K |
| 371 | 91345 | Mission Hills | 63 | C | 0 | $654K |
| 372 | 91381 | Stevenson Ranch | 63 | C | 0 | $1029K |
| 373 | 91402 | Panorama City | 63 | C | 0 | $587K |
| 374 | 91601 | North Hollywood | 63 | C | 0 | $962K |
| 375 | 91602 | North Hollywood | 63 | C | 0 | $1104K |
| 376 | 91603 | North Hollywood | 63 | C | 0 | — |
| 377 | 91606 | North Hollywood | 63 | C | 0 | $801K |
| 378 | 91607 | Valley Village | 63 | C | 0 | $1019K |
| 379 | 91733 | South El Monte | 63 | C | 0 | $602K |
| 380 | 91765 | Diamond Bar | 63 | C | 0 | $879K |
| 381 | 91776 | San Gabriel | 63 | C | 0 | $816K |
| 382 | 91778 | San Gabriel | 63 | C | 0 | — |
| 383 | 93544 | Llano | 62 | C | 8 (3 health) | $340K |
| 384 | 90264 | Malibu | 55 | C | 0 | — |
| 385 | 90277 | Redondo Beach | 55 | C | 0 | $1404K |
| 386 | 90291 | Venice | 55 | C | 0 | $2000K |
| 387 | 90745 | Carson | 55 | C | 0 | $628K |
| 388 | 90746 | Carson | 55 | C | 0 | $682K |
| 389 | 91304 | Canoga Park | 55 | C | 0 | $848K |
| 390 | 91307 | West Hills | 55 | C | 0 | $907K |
| 391 | 91342 | Sylmar | 55 | C | 0 | $641K |
| 392 | 91344 | Granada Hills | 55 | C | 0 | $872K |
| 393 | 91351 | Canyon Country | 55 | C | 0 | $589K |
| 394 | 91352 | Sun Valley | 55 | C | 0 | $700K |
| 395 | 91605 | North Hollywood | 55 | C | 0 | $730K |
| 396 | 91745 | Hacienda Heights | 55 | C | 0 | $779K |
| 397 | 90202 | Bell | 53 | D | 0 | — |
| 398 | 90248 | Gardena | 53 | D | 0 | $647K |
| 399 | 90261 | Lawndale | 53 | D | 0 | — |
| 400 | 90263 | Malibu | 53 | D | 0 | — |
| 401 | 90294 | Venice | 53 | D | 0 | — |
| 402 | 90637 | La Mirada | 53 | D | 0 | — |
| 403 | 90639 | La Mirada | 53 | D | 0 | — |
| 404 | 90702 | Artesia | 53 | D | 0 | — |
| 405 | 90747 | Carson | 53 | D | 0 | — |
| 406 | 91009 | Duarte | 53 | D | 0 | — |
| 407 | 91020 | Montrose | 53 | D | 0 | $881K |
| 408 | 91021 | Montrose | 53 | D | 0 | — |
| 409 | 91023 | Mount Wilson | 53 | D | 0 | — |
| 410 | 91041 | Sunland | 53 | D | 0 | — |
| 411 | 91305 | Canoga Park | 53 | D | 0 | — |
| 412 | 91308 | West Hills | 53 | D | 0 | — |
| 413 | 91309 | Canoga Park | 53 | D | 0 | — |
| 414 | 91333 | Pacoima | 53 | D | 0 | — |
| 415 | 91334 | Pacoima | 53 | D | 0 | — |
| 416 | 91346 | Mission Hills | 53 | D | 0 | — |
| 417 | 91353 | Sun Valley | 53 | D | 0 | — |
| 418 | 91365 | Woodland Hills | 53 | D | 0 | — |
| 419 | 91371 | Woodland Hills | 53 | D | 0 | — |
| 420 | 91386 | Canyon Country | 53 | D | 0 | — |
| 421 | 91392 | Sylmar | 53 | D | 0 | — |
| 422 | 91393 | North Hills | 53 | D | 0 | — |
| 423 | 91394 | Granada Hills | 53 | D | 0 | — |
| 424 | 91395 | Mission Hills | 53 | D | 0 | — |
| 425 | 91412 | Panorama City | 53 | D | 0 | — |
| 426 | 91609 | North Hollywood | 53 | D | 0 | — |
| 427 | 91611 | North Hollywood | 53 | D | 0 | — |
| 428 | 91612 | North Hollywood | 53 | D | 0 | — |
| 429 | 91614 | Studio City | 53 | D | 0 | — |
| 430 | 91615 | North Hollywood | 53 | D | 0 | — |
| 431 | 91616 | North Hollywood | 53 | D | 0 | — |
| 432 | 91617 | Valley Village | 53 | D | 0 | — |
| 433 | 91618 | North Hollywood | 53 | D | 0 | — |
| 434 | 91714 | City Of Industry | 53 | D | 0 | — |
| 435 | 91715 | City Of Industry | 53 | D | 0 | — |
| 436 | 91716 | City Of Industry | 53 | D | 0 | — |
| 437 | 91780 | Temple City | 53 | D | 0 | $923K |
| 438 | 93532 | Lake Hughes | 53 | D | 17 (15 health) | $410K |
| 439 | 93553 | Pearblossom | 53 | D | 0 | $369K |
| 440 | 90290 | Topanga | 50 | D | 0 | $1415K |
| 441 | 91040 | Sunland | 50 | D | 0 | $787K |
| 442 | 91364 | Woodland Hills | 50 | D | 0 | $1162K |
| 443 | 91367 | Woodland Hills | 50 | D | 0 | $1006K |
| 444 | 91387 | Canyon Country | 50 | D | 0 | $695K |
| 445 | 93534 | Lancaster | 48 | D | 24 (19 health) | $340K |
| 446 | 91354 | Valencia | 47 | D | 21 (19 health) | $803K |
| 447 | 91355 | Valencia | 47 | D | 21 (19 health) | $744K |
| 448 | 90272 | Pacific Palisades | 45 | D | 0 | $2000K |
| 449 | 93535 | Lancaster | 43 | D | 24 (19 health) | $336K |
| 450 | 93536 | Lancaster | 43 | D | 24 (19 health) | $485K |
| 451 | 90265 | Malibu | 40 | D | 0 | $2000K |
| 452 | 93539 | Lancaster | 36 | F | 24 (19 health) | — |
| 453 | 93584 | Lancaster | 36 | F | 24 (19 health) | — |
| 454 | 93586 | Lancaster | 36 | F | 24 (19 health) | — |
| 455 | 91385 | Valencia | 35 | F | 21 (19 health) | — |
| 456 | 91316 | Encino | 23 | F | 18 (18 health) | $910K |
| 457 | 91436 | Encino | 18 | F | 18 (18 health) | $1895K |
| 458 | 91416 | Encino | 17 | F | 18 (18 health) | — |
| 459 | 91426 | Encino | 17 | F | 18 (18 health) | — |
Recommended Buyer Guides for Los Angeles County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Deep Dive Reports
Detailed analysis for Los Angeles County, California
💧
Water Quality
EPA violations, contaminant trends, and enforcement actions across the county
⚠️
Lead Risk
Lead exposure scores, housing age analysis, and LCR testing trends
🏠
Home Affordability
Remediation costs vs. home values, equity trap analysis by ZIP
$1,355 avg remediation
🌊
Flood Risk
FEMA flood zones, insurance claims, and flood risk data across the county
Overview
Los Angeles County in California covers 459 ZIP codes with an average Home Safety Score of B (72/100).
255 of 459 ZIP codes have recorded EPA violations. 454 health-based violations have been documented.
← Back to California water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.