Tap WaterIndex

← Missouri

Tap water quality report

Boone County Pwsd 9

EPA monitoring tested this supplier for 101 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
16
detected
15,035
people served
76
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
Ground water
Ownership
Local government
Counties served
Boone

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

76
health-based violations
93
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-10-01 → 2006-09-30
MCL Health-based Resolved 2005-10-01 → 2006-09-30
MCL Health-based Resolved 2005-10-01 → 2006-09-30
MCL Health-based Resolved 2005-10-01 → 2006-09-30
MCL Health-based Resolved 2005-07-01 → 2006-06-30
MCL Health-based Resolved 2005-07-01 → 2006-06-30
MCL Health-based Resolved 2005-07-01 → 2006-06-30
MCL Health-based Resolved 2005-07-01 → 2006-06-30
MCL Health-based Resolved 2005-04-01 → 2006-03-31
MCL Health-based Resolved 2005-04-01 → 2006-03-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
232 µg/L 18%
of the EPA limit 1300 µg/L
 74/74 SYR4 2012–2018
Lead
21 µg/L 140%
of the EPA limit, in the worst sample — 15 µg/L
 40/74 SYR4 2012–2018
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
 24/24 LCR 2025
Combined Radium (-226 And -228)
3.6 pCi/L 72%
of the EPA limit 5 pCi/L
 18/18 SYR4 2012–2019
Barium
136 µg/L 6.8%
of the EPA limit 2000 µg/L
 14/14 SYR4 2012–2018
Fluoride
1330 µg/L 33%
of the EPA limit 4000 µg/L
 14/14 SYR4 2012–2018
Lithium
43.9 µg/L
No EPA limit set
 10/10 UCMR-5 2024
Dibromochloromethane
2.5 µg/L
No EPA limit set
 8/27 SYR4 2012–2019
Nitrate-Nitrite
30 µg/L 0.3%
of the EPA limit 10000 µg/L
 8/76 SYR4 2012–2019
Bromodichloromethane
1.43 µg/L
No EPA limit set
 7/27 SYR4 2012–2019
Bromoform
1.94 µg/L
No EPA limit set
 7/27 SYR4 2012–2019
TTHM
6 µg/L 7.5%
of the EPA limit 80 µg/L
 6/14 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
7.9 pCi/L 53%
of the EPA limit 15 pCi/L
 5/5 SYR4 2014–2015
Chloroform
0.8900 µg/L
No EPA limit set
 2/27 SYR4 2012–2019
Dibromoacetic Acid
1.04 µg/L
No EPA limit set
 1/14 SYR4 2012–2019
Dichloroacetic Acid
1.4 µg/L
No EPA limit set
 1/14 SYR4 2012–2019
85 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BALLEW, ROGER
Phone
573-474-9521
Email
rballew@pwsd9.com

Frequently asked questions about Boone County Pwsd 9

Is Boone County Pwsd 9 tap water safe to drink?

EPA monitoring detected 16 contaminants in Boone County Pwsd 9's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Boone County Pwsd 9's water?

EPA monitoring detected Copper, Lead, Lead, Combined Radium (-226 And -228), Barium, and others. The full list with the level and data source for each is above.

How many people does Boone County Pwsd 9 serve?

Boone County Pwsd 9 reports serving 15,035 people in Missouri, per its EPA record.

Has Boone County Pwsd 9 had any water quality violations?

The EPA has 93 violations on file for Boone County Pwsd 9, of which 76 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.