Chromium-6 in Parker, CO Drinking Water
Chromium-6 data for Parker, Colorado · 104,687 residents · 2 ZIP codes
Across Parker, Colorado, federal monitoring data has captured Chromium-6 in water samples at detectable concentrations in the most recent available reporting cycle.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Chromium-6 in Parker Tap Water
Chromium-6 has been detected in Parker, Colorado drinking water at a maximum level of 250 ppb — 2.5x the EPA MCL.
This analysis covers 104,687 residents across 2 ZIP codes in Parker.
Parker's overall water quality grade is C (62/100).
Is Chromium-6 in Parker Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or strong-base anion exchange filter certified under NSF 58 and testing your water independently.
Chromium-6 Levels by ZIP Code
| ZIP Code | Chromium-6 Level | EPA Limit | Status |
|---|---|---|---|
| 80134 | 250 ppb | 100 ppb (total chromium MCL) | Exceeds limit |
| 80138 | 250 ppb | 100 ppb (total chromium MCL) | Exceeds limit |
Average chromium-6 level across Parker: 250 ppb
Health Effects of Chromium-6
- Stomach and intestinal cancer (likely carcinogen via ingestion)
- Known carcinogen when inhaled
- Liver and kidney damage
- Reproductive and developmental harm
Health risk severity: High. Governed by the National Primary Drinking Water Regulations.
How Chromium-6 Gets Into Drinking Water
- Industrial discharge from steel and pulp mills
- Natural erosion of chromium deposits
- Coal ash disposal sites
- Cooling tower discharge
What to Do About Chromium-6 in Parker Water
- Reverse osmosis systems are most effective
- Strong-base anion exchange can reduce chromium-6
- Standard carbon filters are NOT effective for chromium-6
- Look for NSF 58 certification
Look for filters certified under NSF 58 for chromium-6 removal.