Harlow, England
Harlow
Your water is safe
We checked 24 things and found nothing to worry about
ExcellentYour water is safe
We checked 24 things and found nothing to worry about
ExcellentBased on drinking water tests, your water in CM19 (Harlow) is supplied by Affinity Water. Based on the latest data (last sampled 2024-12-03), 24 things were tested with 0 exceeding recommended levels. The overall water quality score for CM19 is 9.3/10.
Last sampled 2024-12-03 · 2,422 samples
This data is 16 months old. Newer data may be available soon.
Results from drinking water tests in Harlow.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Coliform Bacteria | 0 count/100ml | 0 count/100ml | 0 count/100ml | Safe |
| E. coli | 0 count/100ml | 0 count/100ml | 0 count/100ml | Safe |
| Colour | 0 mg/L Pt/Co | 20 mg/L Pt/Co | — | Safe |
| Aluminium | 0 mg/L | 0.2 mg/L | — | Safe |
| Iron | 0.0437 mg/L | 0.2 mg/L | 0.3 mg/L | Safe |
| Manganese | 0.00201 mg/L | 0.05 mg/L | 0.08 mg/L | Safe |
Source: Stream Water Data Portal
General-purpose filters for common UK tap water concerns.

Our pick for CM19
BRITA Marella XL + MAXTRA PRO
Jug Filter · TUV SUD
A solid all-round filter for CM19. Removes Chlorine, Lead, Copper and more. No installation needed.
£25
Recommendations matched to your area's water data, not sponsorship. We may earn a commission at no extra cost to you. Affiliate disclosure · Full filter guide
Shower filters
Remove chlorine for better skin and hair
Test your water
Confirm exactly what's in your pipes
Rivers, groundwater and reservoirs near CM19. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Iron | 0.23 mg/L | 0.2 mg/L | 0.3 mg/L | Over limit |
Source: Environment Agency
We'll email you when water quality data changes for CM19.