Is Crystal City, MO tap water safe?
The short answer
1 of the 7 utilities serving Crystal City has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Crystal City PWS.
Crystal City PWS, which serves the most people here, has 1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 43.8 ppb, above the legal limit.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Crystal City’s ZIP codes, from EPA’s estimates.
- Open report
Crystal City PWS
Missouri · serves 4,733 people · about 3,400 in Crystal City
1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 43.8 ppb, above the legal limit.
3 health-based violations since 2016
- Open report
Festus PWS
Missouri · serves 13,000 people · about 560 in Crystal City
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 19.1 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Herculaneum PWS
Missouri · serves 5,000 people · about 510 in Crystal City
1 result above EPA’s health benchmark. The worst: Lithium at 22 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Jefferson County PWSD 12
Missouri · serves 3,300 people · under 100 in Crystal City
1 result above the health goal. The worst: Lead at 1.4 ppb, above the health goal.
No health-based violations since 2016
- Open report
Jefferson County PWSD 5
Missouri · serves 8,000 people · under 100 in Crystal City
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 27 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Jefferson County PWSD 7
Missouri · serves 6,100 people · under 100 in Crystal City
2 results above the health goal. The worst: Lead at 1.7 ppb, above the health goal.
No health-based violations since 2016
- Open report
Manderly MHP
Missouri · serves 100 people · under 100 in Crystal City
1 result above the health goal. The worst: Lead at 0.62 ppb, above the health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Crystal City PWS’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic, Lead
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic, Lead
Water testing near Crystal City
The 3 labs Missouri certifies closest to Crystal City, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
EMSL Analytical Inc.-St. Louis
St. Louis, MO · about 25 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Eastern Missouri Water Lab
Lonedell, MO · about 27 miles
Certified for bacteria
Pace Analytical Services LLC-Hazelwood
Hazelwood, MO · about 30 miles
Certified for bacteria
Missouri State Public Health Laboratory: Coliform and E. coli testing for private wells and other private drinking water sources, in kits from your local public health agency. A free state courier can carry the sample to the lab overnight. The handling fee is $10, by check or money order. Private Drinking Water Bacteriological Testing, Missouri Department of Health and Senior Services.
All 64 certified labs for MissouriWhich ZIP codes are in Crystal City: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Missouri DNR, certified microbiological and chemical laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Crystal City
Other towns in Jefferson County with a page of their own.
What to do next
- Read Crystal City PWS’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water