Is Columbia, MO Tap Water Safe to Drink?
Columbia tap water meets federal Safe Drinking Water Act standards but 10 of 10 ZIP codes show detections above EPA health guidelines, primarily for lithium. A certified filter is recommended for households that want an additional layer of protection.
Where Does Columbia Get Its Water?
Water in Columbia, MO is provided by 8 public water systems: COLUMBIA PWS, UNIVERSITY OF MISSOURI COLUMBIA, CALLAWAY 2 WATER DISTRICT, BOONE COUNTY CONS PWSD 1, BOONE COUNTY PWSD 4, BOONE COUNTY PWSD 9, CLARK COUNTY CONS PWSD 1 and THOMAS HILL PWSD 1.
How Is Columbia Tap Water Treated?
Treated water is disinfected using free chlorine and calcium hypochlorite and chloramines and on-site generated disinfectant. Treatment includes air stripping, conventional treatment (coagulation, flocculation, and filtration), granular activated carbon filtration, groundwater disinfection, in-line filtration, post-ozone biofiltration and slow sand filtration.
What's in Columbia Tap Water?
The following contaminants were detected most frequently in Columbia public water systems. 10 of 10 ZIP codes showed detections above EPA health guidelines.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| lithium | 57 µg/L | 10 µg/L | 10 ZIPs | Above guideline |
| PFBA | 0.0073 µg/L | — | 4 ZIPs | Within guideline |
| PFTrDA | 0.007 µg/L | — | 0 ZIPs | Within guideline |
| 6:2 FTS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| 11Cl-PF3OUdS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Columbia
Based on EPA monitoring data, 10 of 10 ZIP codes in Columbia have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Columbia Tap Water
Is Columbia tap water safe to drink?
Columbia tap water meets Safe Drinking Water Act requirements but 10 of 10 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.
What contaminants are in Columbia tap water?
The most commonly detected contaminants in Columbia water systems include: lithium, PFBA, PFTrDA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Columbia get its drinking water?
Columbia receives water from 8 public water systems, including COLUMBIA PWS.
Do I need a water filter in Columbia?
If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.
How often is Columbia tap water tested?
Public water systems in Columbia are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-01-13.
Tap water reports by ZIP in Columbia
- 65201 - North Central Columbia, Columbia tap water report Higher concern
- 65202 - Moores Switch, Columbia tap water report Higher concern
- 65203 - Quarry Heights, Columbia tap water report Higher concern
- 65205 - Columbia tap water report Higher concern
- 65211 - Columbia tap water report Higher concern
- 65212 - Columbia tap water report Higher concern
- 65215 - North Central Columbia, Columbia tap water report Higher concern
- 65216 - North Central Columbia, Columbia tap water report Higher concern
- 65217 - Columbia tap water report Higher concern
- 65218 - Columbia tap water report Higher concern
Water utilities serving Columbia, MO
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- BOONE COUNTY CONS PWSD 1Action advised
- BOONE COUNTY PWSD 4Action advised
- CITY OF COLUMBIA UTILITIESAction advised
Also covers / overlaps with
- Missouri, MO · Township
- Katy, MO · Township
- Rock Bridge, MO · Township
- Cleveland, MO · Township
- Perche, MO · Township
- Rocky Fork, MO · Township
- Three Creeks, MO · Township