TEXAS CLASS D WATER TEST WITH ALL NEEDED TO PASS
1. Who b is b authorized b to b remove b a b lock b and b tag b placed b on b a
b piece b of b equipment bto bisolate bit bfor bmaintenance?: bOnly bthe bperson bwho
bplaced bthe block band btag
2. In baddition bof ban bemergency bresidual bpressure bof b20 bpsi, bwhat
bis bthe bminimum bnormal boperating bpressure ba bpublic bwater
bsupply bsystem bshould bmaintain?: b35 bpsi
3. What bis bthe bminimum bdistance bseparating binstalled bwater
bmains bfrom bany bsewer blines bor bother bpossible bcontaminated
blines?: b9 bfeet
4. What b is b the b minimum b distance b required b to b separate b grazing
b livestock b and b septic btanks bfrom ba bpublic bwell?: b50 bfeet
1 b/
b12
, 5. What bcolor bdoes bthe bsample bturn bwhen bthe bDPD breagent bis
badded bto bwater bcontaining bchlorine?: bRed
6. A bsystem bis boperating bat ba bflow brate bof b2.2 bMGD. bA bchlorine
bdose bof b10 bmg/L bis brequired bto bmaintain ba bdisinfectant bresidual
bof b0.4 bmg/L. bCalculate bthe bdaily bchlorine bdemand bin bpounds.: b176
bpounds
7. A btank bwith b1 bfoot bof bwater babove ba bpressure bgauge bat bthe
bbottom bwill bregister ba breading bof:: b0.433 bpsi
8. Pipe b and b fittings b used b in b public b water b systems b may b n
b contain b more b than
b b b % blead bor bsolder band bflux bmay bnot bcontain bmore bthan b b b b
blead.: b0.25%, b0.2%
9. Chlorine b tablets b (Calcium b hypochlorite) b should b not b come b
b contact b with
based b products b due b to b the b violent b reaction b that b w
b result.: b Petroleum
10. What bis bthe bcondition bcalled bwhich baffects byoung bchildren
band bis bcaused bby bhigh bnitrate blevels bin bdrinking bwater?
b(choose ball bthat bapply):
11. How b much b does b one b gallon b of b water b weigh?: b 8.34 blbs
12. How bmany bhours bdoes bthe bsystem boperator bhave bto bcontact
bthe bstate breg- bulatory bauthority bby bphone bif ba bcontamination
bevent boccurs bin ba bpublic bwater bsystem bat b8:00 bMonday
bmorning band bthe badministrative boffice bcloses bat b4:00 bp.m.?:
13. After bdisinfecting ba bnewly binstalled bwater bmain,
bbacteriological bsamples bare brequired bto bbe bcollected bevery b b b b
b feet balong bthe bnew bline.: b1,000
14. For bwater bto bbe bconsidered bPotable, bit: b(choose ball bthat
bapply):: bContains ba bchlorine bresidual, bIs bfree bof bpathogens, bColiform bfree
2 b/
b12
1. Who b is b authorized b to b remove b a b lock b and b tag b placed b on b a
b piece b of b equipment bto bisolate bit bfor bmaintenance?: bOnly bthe bperson bwho
bplaced bthe block band btag
2. In baddition bof ban bemergency bresidual bpressure bof b20 bpsi, bwhat
bis bthe bminimum bnormal boperating bpressure ba bpublic bwater
bsupply bsystem bshould bmaintain?: b35 bpsi
3. What bis bthe bminimum bdistance bseparating binstalled bwater
bmains bfrom bany bsewer blines bor bother bpossible bcontaminated
blines?: b9 bfeet
4. What b is b the b minimum b distance b required b to b separate b grazing
b livestock b and b septic btanks bfrom ba bpublic bwell?: b50 bfeet
1 b/
b12
, 5. What bcolor bdoes bthe bsample bturn bwhen bthe bDPD breagent bis
badded bto bwater bcontaining bchlorine?: bRed
6. A bsystem bis boperating bat ba bflow brate bof b2.2 bMGD. bA bchlorine
bdose bof b10 bmg/L bis brequired bto bmaintain ba bdisinfectant bresidual
bof b0.4 bmg/L. bCalculate bthe bdaily bchlorine bdemand bin bpounds.: b176
bpounds
7. A btank bwith b1 bfoot bof bwater babove ba bpressure bgauge bat bthe
bbottom bwill bregister ba breading bof:: b0.433 bpsi
8. Pipe b and b fittings b used b in b public b water b systems b may b n
b contain b more b than
b b b % blead bor bsolder band bflux bmay bnot bcontain bmore bthan b b b b
blead.: b0.25%, b0.2%
9. Chlorine b tablets b (Calcium b hypochlorite) b should b not b come b
b contact b with
based b products b due b to b the b violent b reaction b that b w
b result.: b Petroleum
10. What bis bthe bcondition bcalled bwhich baffects byoung bchildren
band bis bcaused bby bhigh bnitrate blevels bin bdrinking bwater?
b(choose ball bthat bapply):
11. How b much b does b one b gallon b of b water b weigh?: b 8.34 blbs
12. How bmany bhours bdoes bthe bsystem boperator bhave bto bcontact
bthe bstate breg- bulatory bauthority bby bphone bif ba bcontamination
bevent boccurs bin ba bpublic bwater bsystem bat b8:00 bMonday
bmorning band bthe badministrative boffice bcloses bat b4:00 bp.m.?:
13. After bdisinfecting ba bnewly binstalled bwater bmain,
bbacteriological bsamples bare brequired bto bbe bcollected bevery b b b b
b feet balong bthe bnew bline.: b1,000
14. For bwater bto bbe bconsidered bPotable, bit: b(choose ball bthat
bapply):: bContains ba bchlorine bresidual, bIs bfree bof bpathogens, bColiform bfree
2 b/
b12
