Live Data
What We're Finding in LA Tap Water
Real-time distribution from 50+ tap water samples across Los Angeles. Updated as new results come in.
41
Samples tested
and counting
10
Median count
particles per 100mL
12
Average count
particles per 100mL
20
Neighborhoods
across LA
Particle Count Distribution
How many samples fall in each range
7
0–2
4
3–5
9
6–9
9
10–15
6
16–22
5
23–35
0
36–50
1
50+
particles per 100mL sample
Percentiles
Where different cutoffs fall in our dataset
5
P25
10
Median
17
P75
26
P90
0
Cleanest
5
25th %ile
10
Median
17
75th %ile
52
Highest
Results by Tier
How samples distribute across our severity scale
Low
11
27%
Moderate
18
44%
High
11
27%
Very High
1
2%
41 total samplesParticles per 100mL
By Neighborhood
Average particle count where we have 2+ samples
All data is from public, non-baseline tap water samples processed using Nile Red fluorescence staining. Particle counts are per 100mL. No federal safety standard exists for microplastics in drinking water. This page updates automatically as new results are added.