Nitrate in New Berlin, WI Drinking Water
Nitrate data for New Berlin, Wisconsin · 40,213 residents · 2 ZIP codes
SDWIS federal records include Nitrate detections tied to water systems serving New Berlin, Wisconsin.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-06-04
Nitrate in New Berlin Tap Water
New Berlin, Wisconsin has 6 EPA violations related to nitrate in drinking water.
This analysis covers 40,213 residents across 2 ZIP codes in New Berlin.
New Berlin's overall water quality grade is C (63/100).
Is Nitrate in New Berlin Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or ion exchange filter certified under NSF 53 / NSF 58 and testing your water independently.
EPA Violations for Nitrate in New Berlin
| Date | Violation Type | Status | ZIP Code |
|---|---|---|---|
| 2023-04-01 | Nitrate (Resolved) | Resolved | 53146 |
| 2023-01-01 | Nitrate (Resolved) | Resolved | 53146 |
| 2022-10-01 | Nitrate (Known) | Known | 53146 |
| 2022-07-01 | Nitrate (Known) | Known | 53146 |
| 2022-04-01 | Nitrate (Known) | Known | 53146 |
| 2022-01-01 | Nitrate (Known) | Known | 53146 |
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 New Berlin 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.