B
71

Good Water Quality

Tyngsboro, MA 01879

Middlesex County · Population served: 38,210 · Data updated March 2026

Water Systems Serving This Area

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NORTH CHELMSFORD WATER DIST
Groundwater · Pop. 7,498
PWSID: MA3056002
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DRACUT WATER SUPPLY DISTRICT
Surface water · Pop. 25,789
PWSID: MA3079000
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TYNGSBOROUGH WATER DISTRICT
Surface water · Pop. 4,382
PWSID: MA3301000
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RIVER CROSSING CONDOMINIUM
Groundwater · Pop. 150
PWSID: MA3301002
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BENCHMARK CONDOMINIUMS
Groundwater · Pop. 60
PWSID: MA3301008

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
6.1
15 ppb 1 ppb Warning
Copper
1410.0
1300 ppb 300 ppb Exceeded

PFAS / Forever Chemicals

6 detected 2 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBS10.1 ppt2000 ppt100 pptBelow limit
PFOA6.1 ppt4 ppt4 pptExceeded
PFOA4.6 ppt4 ppt4 pptExceeded
PFHxA3.6 pptNo standard400 pptUnregulated
PFPeA3.1 pptNo standardUnregulated
PFPeA3.0 pptNo standardUnregulated

Violation History (Last 5 Years)

11Total (5yr)
0Health-Based
0Major

Water Quality Summary

Understanding Your Water in Tyngsboro

Tap water quality in Tyngsboro, Massachusetts (01879) receives an overall grade of B (Good) with a score of 71 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 10 points below the Massachusetts state average of 81. The area is served by 10 water systems providing water to approximately 38,210 people, using surface water and groundwater sources. Testing has found elevated levels of Lead, Copper that warrant attention. Notably, 2 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. The area has 11 violations over the past 5 years, though none were classified as health-based.

Your Score 71/100 B
vs State 10 pts below Massachusetts avg (81)
vs National 4 pts below national avg (75)

What a Grade B Means

A score of 71/100 means the water in Tyngsboro, MA is generally good and meets EPA standards, with only minor areas of concern. There may be low levels of detectable contaminants or a small number of non-critical violations. Most residents can feel comfortable with their tap water quality, though basic filtration can provide an extra layer of protection.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

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Copper in Your Water

Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.

Health Effects

Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.

Common Sources

Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.

What You Can Do

If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Tyngsboro, Massachusetts receives a grade of B (Good) with a score of 71/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 01879 is served by 10 water systems using surface water, groundwater sources, providing water to approximately 38,210 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 6.1 ppb in Tyngsboro, Massachusetts. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

Yes — 6 PFAS compounds were detected in water serving Tyngsboro, Massachusetts, and 2 exceed EPA maximum contaminant levels. PFAS are persistent chemicals linked to cancer, immune system effects, and developmental issues. A reverse osmosis or activated carbon filter certified for PFAS removal is recommended.

Water systems serving Tyngsboro, Massachusetts have received 11 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead, PFAS, copper), residents in Tyngsboro, Massachusetts should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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