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Tap water quality report

Clark Addition Water

EPA monitoring tested this supplier for 66 contaminants and detected 4. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
4
detected
189
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Franklin

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.

0
health-based violations
7
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2026-03-01 → 2026-03-31
Other Monitoring Resolved 2025-07-01
MR Monitoring Resolved 2021-01-01
MON Monitoring Resolved 2019-06-01 → 2019-06-30
MON Monitoring Resolved 2017-07-01 → 2017-07-31
MR Monitoring Resolved 2010-01-01
MR Monitoring Resolved 2009-01-01 → 2009-12-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2024
Nitrate
2540 µg/L 25%
of the EPA limit 10000 µg/L
 6/18 SYR4 2012–2019
Fluoride
1810 µg/L 45%
of the EPA limit 4000 µg/L
 2/2 SYR4 2012–2016
Nitrate-Nitrite
2540 µg/L 25%
of the EPA limit 10000 µg/L
 1/2 SYR4 2012–2016
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Dan Riley

Frequently asked questions about Clark Addition Water

Is Clark Addition Water tap water safe to drink?

EPA monitoring detected 4 contaminants in Clark Addition Water'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 Clark Addition Water's water?

EPA monitoring detected Lead, Nitrate, Fluoride, Nitrate-Nitrite. The full list with the level and data source for each is above.

How many people does Clark Addition Water serve?

Clark Addition Water reports serving 189 people in Washington, per its EPA record.

Has Clark Addition Water had any water quality violations?

The EPA has 7 violations on file for Clark Addition Water, of which 0 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.