Dedham Tap Water Quality Report
Dedham's water has 8 MCL violations on record โ an enforceable limit was exceeded, which is a different thing from a result sitting above a health goal.
Utility
DEDHAM WATER SUPPLY
People Served
224
MCL Violations
8
Last Updated
Is Dedham Tap Water Safe to Drink?
Dedham's water has 8 MCL violations on record. A violation means an enforceable limit was actually exceeded, which is a different thing from a result sitting above a health goal โ it is the case where the number genuinely matters, and a certified filter matched to the finding is worth considering.
The data below shows test results from 1 water utility serving 224 people in the Dedham area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated 2022-05-11.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Iowa
Dedham Water Service Areas

What these numbers actually mean for Dedham, IA
We read Dedham, IAโs published record and send you a short report โ which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 3 contaminants above EPA health goals
- 64 analytes tested
- No PFAS results on record
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Recommended Water Filters for Dedham
Based on Dedham's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.

iSpring Water Systems LLC
RCC7-BLK
NSF Certified:
Daily Production
25.41 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 25.41 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 9 contaminants:
+4 more
Fluoride, Lead, Selenium, Total Dissolved Solids

iSpring Water Systems LLC
RCC7AK-UVBLK
NSF Certified:
Daily Production
25.41 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 25.41 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 9 contaminants:
+4 more
Fluoride, Lead, Selenium, Total Dissolved Solids

iSpring Water Systems LLC
RCC7AK-BN
NSF Certified:
Daily Production
25.41 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 25.41 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 9 contaminants:
+4 more
Fluoride, Lead, Selenium, Total Dissolved Solids

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
Verify Your Water Quality with Independent Testing
With 3 contaminants above EPA health guidelines, independent laboratory testing provides a second opinion and can track changes over time.

SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.

Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.

Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 3 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Dedham's water readings can explain
We publish a city-level hardness figure for Dedham, 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 Dedham? Public-water results do not apply to private wells. See Carroll County well water testing and USGS risk data โ modeled arsenic, nitrate, and the tests to run.
What a water softener costs for Dedham's water
Dedham's tap water measures 19.0 grains per gallon (325.0 mg/L) โ very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 19.0 gpg water in Dedham โ 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 โ equipment, installation labour and ten-year ownership, each separated out.
Frequently Asked Questions About Dedham Tap Water
Dedham's water has 8 MCL violations on record. A violation means an enforceable federal limit was actually exceeded, which is a different thing from a result sitting above a health goal โ it is the case where the number genuinely matters, and a filter certified for the contaminant involved is worth considering.
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