Question 1

Is Crested Butte South water safe to drink?

Accepted Answer

Crested Butte South (PWS ID: CO0126189) has 276 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 2,000 people using Groundwater sources.

Question 2

How many people does Crested Butte South serve?

Accepted Answer

EPA SDWIS reports that Crested Butte South serves 2,000 people (this public water system's service population, not the municipal population of Crested Butte or any other city). It is a Local-owned system using Groundwater water sources with 553 service connections. The operator address is listed in Crested Butte, Colorado.

Question 3

What type of violations does Crested Butte South have?

Accepted Answer

Crested Butte South has 276 total violations: 0 health-based violations (MCL exceedances or treatment failures), 268 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Crested Butte South water?

Accepted Answer

No PFAS testing data is available for Crested Butte South under the EPA's UCMR5 monitoring program.

Question 5

What water source does Crested Butte South use?

Accepted Answer

Crested Butte South uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

Where does Crested Butte South sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Crested Butte South ranks #13,547 of 29,740 by people served, and #253 of 551 in Colorado. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Crested Butte South's violation count compare nationally?

Accepted Answer

Crested Butte South has 276 recorded EPA SDWIS violations, fewer than 10% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 90% of that cohort has fewer violations than Crested Butte South. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Consumer Confidence Rule	Other	5	2018
1,2,4-Trichlorobenzene	MR	4	2011
o-Dichlorobenzene	MR	4	2011
trans-1,2-Dichloroethylene	MR	4	2011
1,1,1-Trichloroethane	MR	4	2011
1,2-Dichloropropane	MR	4	2011
1,1,2-Trichloroethane	MR	4	2011
Tetrachloroethylene	MR	4	2011
CHLOROBENZENE	MR	4	2011
Benzene	MR	4	2011
Ethylbenzene	MR	4	2011
Styrene	MR	4	2011
Chromium	MR	4	2011
Nickel	MR	4	2011
Antimony, Total	MR	4	2011
Beryllium, Total	MR	4	2011
Endrin	MR	4	2011
Methoxychlor	MR	4	2011
Dalapon	MR	4	2011
Diquat	MR	4	2011
Endothall	MR	4	2011
OXAMYL	MR	4	2011
Di(2-ethylhexyl) phthalate	MR	4	2011
Hexachlorocyclopentadiene	MR	4	2011
Aldicarb sulfone	MR	4	2011
Carbofuran	MR	4	2011
Aldicarb	MR	4	2011
LASSO	MR	4	2011
Heptachlor	MR	4	2011
Heptachlor epoxide	MR	4	2011

Crested Butte South

Crested Butte South standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Crested Butte South

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems near this population served