F0/100
Littleton Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 6,500 residents · New Hampshire
What's In Littleton's Tap Water?
51
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2011.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
LITTLETON WATER AND LIGHT
Population Served
6,500
Water Source
Surface Water
System ID
NH1381010
Frequently Asked Questions About Littleton Water
Is Littleton tap water safe to drink?
Littleton, New Hampshire tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 77 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Littleton's water?
Of the 51 contaminants tested in Littleton's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Littleton have any water quality violations?
Yes, Littleton has 77 EPA violation(s) on record, with the most recent in 2011. Violation types include MR, Other, MCL. 16 of these are health-based violations, which are the most serious category.
Do I need a water filter in Littleton?
Littleton water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Littleton's tap water come from?
Littleton's drinking water is sourced from surface water and supplied by LITTLETON WATER AND LIGHT. The system serves approximately 6,500 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Littleton's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Littleton's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Littleton's water compare to other cities in New Hampshire?
Littleton's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our New Hampshire state page to see how all cities in the state compare.
What should I do if I'm concerned about Littleton's water quality?
If you have concerns about Littleton's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (LITTLETON WATER AND LIGHT) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.