Cambridge Tap Water Quality Report
Cambridge's water has 1 contaminant above EPA MCLGs. Consider using a certified water filter for additional protection.
Other systems listed for Cambridge with results above guidelines: POLINGS MOBILE HOME PARK (2 above guidelines), CONCORD ESTATES MOBILE HOME PARK (2 above guidelines)
People Served
15,000
Health-based violations since 2020
0
CITY OF CAMBRIDGE. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Feb 2025 · CITY OF CAMBRIDGE
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Cambridge Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Cambridge's water has 1 contaminant above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
CITY OF CAMBRIDGE, Cambridge's water system, serves 15,000 people. 5 other systems are listed for Cambridge. Each system's results are listed under its own name, never added to CITY OF CAMBRIDGE's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for CITY OF CAMBRIDGE is from Feb 2025.
In EPA's 2023–2026 UCMR 5 testing, CITY OF CAMBRIDGE measured lithium at up to 16.1 µg/L, which EPA counts as above its health reference level of 10 µg/L. That level is a screening value EPA uses to decide what to study further, not a legal limit, and this result does not change this page's water-quality summary.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Maryland
Cambridge Water Service Areas
What these numbers actually mean for Cambridge, MD
We read Cambridge, MD’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 1 contaminant above EPA MCLGs and 3 contaminants with an EPA health goal detected in some samples (no level on file)
- 86 results on file
- 23 PFAS compounds on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Cambridge's water
The 5 largest of the 6 water systems serving Cambridge, by population served.
CITY OF CAMBRIDGE
PWSID MD0090002
CITY OF CAMBRIDGE reported 0.9 mg/L, at or above the 0.7 mg/L U.S. Public Health Service recommendation and below the 1.5 mg/L WHO guideline value and NTP neurodevelopment review level.
BONNIE BROOK
PWSID MD0090001
BONNIE BROOK reported 0.867 mg/L, at or above the 0.7 mg/L U.S. Public Health Service recommendation and below the 1.5 mg/L WHO guideline value and NTP neurodevelopment review level.
LODGECLIFFE DISTRIBUTION SYSTEM
PWSID MD0090009
No fluoride level in our data for LODGECLIFFE DISTRIBUTION SYSTEM. Your utility's annual water quality report (CCR) lists it.
CONCORD ESTATES MOBILE HOME PARK
PWSID MD0100203
Fluoride was detected in 20.0% of CONCORD ESTATES MOBILE HOME PARK's samples (median below the detection limit).
POLINGS MOBILE HOME PARK
PWSID MD0100210
Fluoride was detected in 25.0% of POLINGS MOBILE HOME PARK's samples (median below the detection limit).
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Recommended Water Filters for Cambridge
Based on Cambridge's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
AquaTru
Carafe
NSF Certified:
Flow Rate
0.3 gpm
Daily Production
4 gpd
Highlights:
- Verified PFAS reduction
- Glass collection vessel
- Plug-and-play installation
- NSF-53, NSF-42, NSF-58, NSF-401, NSF-372 certified
Removes 17 contaminants:
+12 more
Arsenic, 83+ contaminants, Copper, Total THMs, Chloroform, Chloride, Sulfate, Nitrate (as N), Molybdenum, Barium, Strontium, Uranium
Waterdrop
G3 P600
NSF Certified:
Flow Rate
600 gpm
Daily Production
600 gpd
Highlights:
- Space-saving design
- Good contaminant reduction
- NSF-58 certified
Removes 4 contaminants:
Waterdrop
G3 P800
NSF Certified:
Flow Rate
800 gpm
Daily Production
800 gpd
Highlights:
- High water production rate
- Modern design
- No tank needed
- NSF-42, NSF-53, NSF-58, NSF-372 certified
Removes 15 contaminants:
+10 more
Chlorine, Copper, Manganese, Potassium, Selenium, Total Dissolved Solids, Nitrate, Chloride, Sodium, Strontium
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
What Cambridge's water readings can explain
Utility-reported data for Cambridge includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Cambridge, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Cambridge? Public-water results do not apply to private wells. See Dorchester County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Cambridge
Cambridge's tap water has an estimated 3.3 grains per gallon (57.1 mg/L, county sampling in Dorchester County) — soft on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for an estimated 3.3 gpg water in Cambridge — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Maryland as a whole, read water softener cost in Maryland — priced against the plumber wage published for the state.
Frequently Asked Questions About Cambridge Tap Water
Cambridge's water has 1 contaminant above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach CITY OF CAMBRIDGE. For a problem with your water now (discolored water, no water, low pressure, a leak), contact CITY OF CAMBRIDGE directly.
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