Williamstown Tap Water Quality Report
Williamstown's water has 2 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
Water system
WILLIAMSTOWN BORO AUTH
People Served
2,390
Health-based violations since 2020
0
WILLIAMSTOWN BORO AUTH. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Nov 2020 · WILLIAMSTOWN BORO AUTH
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Williamstown 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. Williamstown's water has 2 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
WILLIAMSTOWN BORO AUTH, Williamstown's water system, serves 2,390 people. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for WILLIAMSTOWN BORO AUTH is from Nov 2020.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Pennsylvania
Williamstown Water Service Areas
What these numbers actually mean for Williamstown, PA
We read Williamstown, PA’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.
- 2 contaminants above EPA MCLGs and 7 contaminants with an EPA health goal detected in some samples (no level on file)
- 109 results on file
- No PFAS results on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Williamstown's water
WILLIAMSTOWN BORO AUTH
PWSID PA7220037
WILLIAMSTOWN BORO AUTH reported no detectable fluoride.
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Recommended Water Filters for Williamstown
Based on Williamstown's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
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
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.
What Williamstown's water readings can explain
We publish a city-level hardness figure for Williamstown, 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 Williamstown? Public-water results do not apply to private wells. See Dauphin County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Williamstown
Williamstown's tap water has an estimated 5.3 grains per gallon (91.0 mg/L, county sampling in Dauphin County) — moderately hard on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for an estimated 5.3 gpg water in Williamstown — 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 Pennsylvania as a whole, read water softener cost in Pennsylvania — priced against the plumber wage published for the state.
Frequently Asked Questions About Williamstown Tap Water
Williamstown's water has 2 contaminants 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 WILLIAMSTOWN BORO AUTH. For a problem with your water now (discolored water, no water, low pressure, a leak), contact WILLIAMSTOWN BORO AUTH directly.
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