Nitrate in Wareham, MA Drinking Water
Nitrate data for Wareham, Massachusetts · 29,190 residents · 1 ZIP code
People in Wareham, Massachusetts who get water from the public supply are among residents whose systems have returned Nitrate detections in EPA compliance testing.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Nitrate in Wareham Tap Water
Nitrate has been detected in Wareham, Massachusetts drinking water at a maximum level of 90 ppb — below the EPA MCL of 10 mg/L (as nitrogen).
This analysis covers 29,190 residents across 1 ZIP code in Wareham.
Wareham's overall water quality grade is C (63/100).
Is Nitrate in Wareham Water Safe?
Nitrate was detected in Wareham water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.
If you are concerned, a reverse osmosis or ion exchange filter can reduce nitrate levels further.
Nitrate Levels by ZIP Code
| ZIP Code | Nitrate Level | EPA Limit | Status |
|---|---|---|---|
| 02571 | 90 ppb | 10 mg/L (as nitrogen) | OK |
Average nitrate level across Wareham: 90 ppb
Health Effects of Nitrate
- Methemoglobinemia ("blue baby syndrome") in infants under 6 months
- Increased risk of colorectal and bladder cancer (long-term)
- Thyroid disease from chronic exposure
- Possible reproductive effects
Health risk severity: High. Governed by the National Primary Drinking Water Regulations.
How Nitrate Gets Into Drinking Water
- Agricultural fertilizer runoff
- Animal feedlot operations and manure
- Septic system leachate
- Urban stormwater and wastewater discharge
What to Do About Nitrate in Wareham Water
- Reverse osmosis is the most effective method for nitrate removal
- Ion exchange systems designed for nitrate can also work
- Standard carbon filters do NOT remove nitrate
- Boiling water increases nitrate concentration — never boil for nitrate
Look for filters certified under NSF 53 / NSF 58 for nitrate removal.